The effect of a HIV/AIDS life skills programme on the knowledge, attitudes and perceptions of grade nine learners
- Authors: Alma, Erica
- Date: 2008
- Subjects: Life skills -- Study and teaching -- South Africa , AIDS (Disease) -- Study and teaching -- South Africa , HIV infections -- Study and teaching -- South Africa
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:9916 , http://hdl.handle.net/10948/739 , Life skills -- Study and teaching -- South Africa , AIDS (Disease) -- Study and teaching -- South Africa , HIV infections -- Study and teaching -- South Africa
- Description: The first cases of Acquired Immune Deficiency Syndrome (AIDS) were reported in 1981 and in 1983 the Human Immunodeficiency Virus (HIV) was identified. Today, over 40 million individuals globally are living with HIV/AIDS. As there is currently no cure for the disease, it is projected to reach pandemic proportions in the 21st century. In South Africa at the end of 2006, over 5.3 million individuals were living with HIV/AIDS, with affluent and educated South Africans showing the highest HIVprevalence growth rate. The HIV prevalence amongst 15 to 24 year old South Africans is 10.4 percent. It has become vital that youth receive education about HIV/AIDS as early as possible, to ensure that they do not contract the virus. Psycho-education seeks to teach psychological knowledge and skills to individuals. This is also known as life skills teaching. The National Departments of Health and Education have developed a life skills programme for schools. This programme aims to, amongst others; educate young people about HIV/AIDS. The effectiveness of this programme will be assessed in two schools in the Port Elizabeth area. In this exploratory descriptive, triangulation research study, a quasiexperimental, one group pre- and post-test design was used to assess the effectiveness of the life skills programme amongst 211 Grade nine middle to upper socio-economic group learners. Four focus groups were conducted after the programme to explore the learners attitudes and perceptions of HIV/AIDS and their experiences of the programme. Teschs model of content analysis and Gubas model of trustworthiness were used to analyse the data obtained from the focus groups.
- Full Text:
- Date Issued: 2008
- Authors: Alma, Erica
- Date: 2008
- Subjects: Life skills -- Study and teaching -- South Africa , AIDS (Disease) -- Study and teaching -- South Africa , HIV infections -- Study and teaching -- South Africa
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:9916 , http://hdl.handle.net/10948/739 , Life skills -- Study and teaching -- South Africa , AIDS (Disease) -- Study and teaching -- South Africa , HIV infections -- Study and teaching -- South Africa
- Description: The first cases of Acquired Immune Deficiency Syndrome (AIDS) were reported in 1981 and in 1983 the Human Immunodeficiency Virus (HIV) was identified. Today, over 40 million individuals globally are living with HIV/AIDS. As there is currently no cure for the disease, it is projected to reach pandemic proportions in the 21st century. In South Africa at the end of 2006, over 5.3 million individuals were living with HIV/AIDS, with affluent and educated South Africans showing the highest HIVprevalence growth rate. The HIV prevalence amongst 15 to 24 year old South Africans is 10.4 percent. It has become vital that youth receive education about HIV/AIDS as early as possible, to ensure that they do not contract the virus. Psycho-education seeks to teach psychological knowledge and skills to individuals. This is also known as life skills teaching. The National Departments of Health and Education have developed a life skills programme for schools. This programme aims to, amongst others; educate young people about HIV/AIDS. The effectiveness of this programme will be assessed in two schools in the Port Elizabeth area. In this exploratory descriptive, triangulation research study, a quasiexperimental, one group pre- and post-test design was used to assess the effectiveness of the life skills programme amongst 211 Grade nine middle to upper socio-economic group learners. Four focus groups were conducted after the programme to explore the learners attitudes and perceptions of HIV/AIDS and their experiences of the programme. Teschs model of content analysis and Gubas model of trustworthiness were used to analyse the data obtained from the focus groups.
- Full Text:
- Date Issued: 2008
The effect of varied instructions on prison guard role behaviour expectations
- Authors: Githaiga, Sandra J N
- Date: 2008
- Subjects: Prison psychology -- Experiments , Role expectations , Imprisonment -- Experiments
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:9908 , http://hdl.handle.net/10948/961 , Prison psychology -- Experiments , Role expectations , Imprisonment -- Experiments
- Description: The Stanford Prison Experiment (SPE) was conducted to determine the psychological and behavioural effects of adopting the roles of prisoners or prison guards. In various published research articles Zimbardo reported that he instructed the prison guards to maintain law and order (Haney, Banks, & Zimbardo, 1973). However, in the Quiet Rage video (Zimbardo, 1989), Zimbardo gave the prison guards additional detailed instructions. To examine the effects of these different instructions on expected prison guard role behaviour, first year Psychology students were requested to predict expected prison guard role behaviour under two different conditions. In the order condition, participants received the instructions used in published research articles. While in the fear condition, participants received the instructions from the Quiet Rage video (Zimbardo, 1989). Participants estimated the likelihood of 50 guard behaviours. Participants in the order condition predicted more pleasant behaviour, while participants in the fear condition predicted more unpleasant behaviours. This indicates that the different instructions influenced their intent to perform the different behaviours. There was no significant difference between the fear and order conditions, and the control behaviours. Participants in both the fear and order conditions rated the control items as expected prison guard role behaviour. Participants in both conditions indicated that they would behave in this manner. Gender had no significant influence on expected prison guard role behavior.
- Full Text:
- Date Issued: 2008
- Authors: Githaiga, Sandra J N
- Date: 2008
- Subjects: Prison psychology -- Experiments , Role expectations , Imprisonment -- Experiments
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:9908 , http://hdl.handle.net/10948/961 , Prison psychology -- Experiments , Role expectations , Imprisonment -- Experiments
- Description: The Stanford Prison Experiment (SPE) was conducted to determine the psychological and behavioural effects of adopting the roles of prisoners or prison guards. In various published research articles Zimbardo reported that he instructed the prison guards to maintain law and order (Haney, Banks, & Zimbardo, 1973). However, in the Quiet Rage video (Zimbardo, 1989), Zimbardo gave the prison guards additional detailed instructions. To examine the effects of these different instructions on expected prison guard role behaviour, first year Psychology students were requested to predict expected prison guard role behaviour under two different conditions. In the order condition, participants received the instructions used in published research articles. While in the fear condition, participants received the instructions from the Quiet Rage video (Zimbardo, 1989). Participants estimated the likelihood of 50 guard behaviours. Participants in the order condition predicted more pleasant behaviour, while participants in the fear condition predicted more unpleasant behaviours. This indicates that the different instructions influenced their intent to perform the different behaviours. There was no significant difference between the fear and order conditions, and the control behaviours. Participants in both the fear and order conditions rated the control items as expected prison guard role behaviour. Participants in both conditions indicated that they would behave in this manner. Gender had no significant influence on expected prison guard role behavior.
- Full Text:
- Date Issued: 2008
The nature and incidence of fast bowling injuries at an elite, junior level and the associated risk factors
- Authors: Davies, Roxanne
- Date: 2008
- Subjects: Cricket injuries , Cricket -- Bowling , Cricket injuries -- Prevention
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:10098 , http://hdl.handle.net/10948/660 , Cricket injuries , Cricket -- Bowling , Cricket injuries -- Prevention
- Description: Fast bowlers are especially prone to injury as they perform their bowling techniques repetitively at very high intensities. The fast bowling action in the past has been described as a highly explosive activity that produces high levels of stress and strain on the body. The aim of this study was to compile an injury profile of 46 fast bowlers aged 11 to 18, and to identify the associated risk factors for injury during an academy cricket season. A descriptive correlational research design was utilised. Subjects were selected according to age and fast bowling ability. These subjects were observed for one academy cricket season (March to November). Three testing sessions occurred during this time (T1, T2 and T3). Each subject completed two questionnaires: i) bowler history (at T1) and ii) injury history (at T1, T2, and T3). These assisted in grouping the subjects according to their responses into one of three injury classifications (uninjured = S1; injured but able to play = S2; injured and unable to play = S3). Anthropometric and postural data for the entire group of fast bowlers were also collected pre-season (T1). Physical fitness screenings were also conducted during each of the three testing sessions to establish any relationship between the fitness of each fast bowler and the occurrence of injuries. Additional factors assessed during the season were bowling techniques and bowling workload. Statistical significance was indicated by p-values less than .05 (p< .05), while practical significance was indicated by either Cohen’s d-values of 0.2 or better (d>0.2) for tests based on sample means or Cramer’s V for tests based on sample frequencies, the values of which depend on the applicable degrees of freedom. All fitness scores as well as bowling workload figures for each testing session were converted to standard T-scores and these in turn were summated to derive overall fitness and workload T-scores. ‘TT’ indicated the overall average score for the entire season. Changes in performances, bowling workload and injury status were analysed using ANOVA and ANCOVA. A regression analysis was also conducted to analyse the relationship between bowling workload and weeks incapacitated. This study found that hyperextension in the knees had the highest incidence of postural deviation injury (43 percent) followed by winged scapula (39 percent). Only 15 percent of the fast bowlers remained injury-free for the duration of the season, while 35 percent of the subjects were at some stage injured to such an extent that they were unable to play. The incidence of serious injury (S3) showed a statistical and moderate practical (V=0.23, d.f. ≥2) significant increase throughout the data collection period (4 percent at T1 to 30 percent at T3). The most common injury was to the knee (41 percent) followed by those to the lower back (37 percent). These injuries occurred mostly during test periods T2 and T3. The nature of injuries were predominantly strains and "other" which accounted for 39 percent of the injuries overall (TT) and had the highest reported incidence during the period T1 to T3. Sprains followed with an overall incidence of 14 percent. Less frequently reported injuries were tears, fractures, bruises and dislocations. The degree of severity of injuries was defined in terms of the number of weeks a player reported being incapacitated as a result of injury during the academy session. During midand end-season bowlers were on average incapacitated approximately one week out of every five due to injury. The statistics for the duration of the study translate to approximately one week incapacitated out of every seven weeks of play. When comparing the S1/S2 bowlers with the S3 group, the S1/S2 bowlers performed consistently better than the S3 bowlers in all the fitness variables tested. However no significant differences (p>.05) in either flexibility or muscle strength were observed. Of the risk factors analysed, bowling workload presented a statistically significant (p<.0005) increased risk for injury. A strong significant positive relationship (p<.0005, R²=.619) was found between weeks incapacitated and bowling workload, supporting the finding that increased bowling workloads show a linear relationship with the increase in the number of weeks incapacitated from normal play. This study concluded that inadequate fitness, high bowling workload and bowling technique all have a multi-factorial role in predisposing a bowler to increased risk for injury. These variables did not act alone, but have all contributed to recurring injuries. The bowling action alone would not have been detrimental if the workloads were not in excess of the recommended guidelines. Furthermore the workload would not have been as detrimental if the bowlers were well conditioned and uninjured. Management of minor injuries and adequate recovery time, coupled with adequate and relevant fitness preparation would better prepare fast bowlers for the demands of the game.
- Full Text:
- Date Issued: 2008
- Authors: Davies, Roxanne
- Date: 2008
- Subjects: Cricket injuries , Cricket -- Bowling , Cricket injuries -- Prevention
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:10098 , http://hdl.handle.net/10948/660 , Cricket injuries , Cricket -- Bowling , Cricket injuries -- Prevention
- Description: Fast bowlers are especially prone to injury as they perform their bowling techniques repetitively at very high intensities. The fast bowling action in the past has been described as a highly explosive activity that produces high levels of stress and strain on the body. The aim of this study was to compile an injury profile of 46 fast bowlers aged 11 to 18, and to identify the associated risk factors for injury during an academy cricket season. A descriptive correlational research design was utilised. Subjects were selected according to age and fast bowling ability. These subjects were observed for one academy cricket season (March to November). Three testing sessions occurred during this time (T1, T2 and T3). Each subject completed two questionnaires: i) bowler history (at T1) and ii) injury history (at T1, T2, and T3). These assisted in grouping the subjects according to their responses into one of three injury classifications (uninjured = S1; injured but able to play = S2; injured and unable to play = S3). Anthropometric and postural data for the entire group of fast bowlers were also collected pre-season (T1). Physical fitness screenings were also conducted during each of the three testing sessions to establish any relationship between the fitness of each fast bowler and the occurrence of injuries. Additional factors assessed during the season were bowling techniques and bowling workload. Statistical significance was indicated by p-values less than .05 (p< .05), while practical significance was indicated by either Cohen’s d-values of 0.2 or better (d>0.2) for tests based on sample means or Cramer’s V for tests based on sample frequencies, the values of which depend on the applicable degrees of freedom. All fitness scores as well as bowling workload figures for each testing session were converted to standard T-scores and these in turn were summated to derive overall fitness and workload T-scores. ‘TT’ indicated the overall average score for the entire season. Changes in performances, bowling workload and injury status were analysed using ANOVA and ANCOVA. A regression analysis was also conducted to analyse the relationship between bowling workload and weeks incapacitated. This study found that hyperextension in the knees had the highest incidence of postural deviation injury (43 percent) followed by winged scapula (39 percent). Only 15 percent of the fast bowlers remained injury-free for the duration of the season, while 35 percent of the subjects were at some stage injured to such an extent that they were unable to play. The incidence of serious injury (S3) showed a statistical and moderate practical (V=0.23, d.f. ≥2) significant increase throughout the data collection period (4 percent at T1 to 30 percent at T3). The most common injury was to the knee (41 percent) followed by those to the lower back (37 percent). These injuries occurred mostly during test periods T2 and T3. The nature of injuries were predominantly strains and "other" which accounted for 39 percent of the injuries overall (TT) and had the highest reported incidence during the period T1 to T3. Sprains followed with an overall incidence of 14 percent. Less frequently reported injuries were tears, fractures, bruises and dislocations. The degree of severity of injuries was defined in terms of the number of weeks a player reported being incapacitated as a result of injury during the academy session. During midand end-season bowlers were on average incapacitated approximately one week out of every five due to injury. The statistics for the duration of the study translate to approximately one week incapacitated out of every seven weeks of play. When comparing the S1/S2 bowlers with the S3 group, the S1/S2 bowlers performed consistently better than the S3 bowlers in all the fitness variables tested. However no significant differences (p>.05) in either flexibility or muscle strength were observed. Of the risk factors analysed, bowling workload presented a statistically significant (p<.0005) increased risk for injury. A strong significant positive relationship (p<.0005, R²=.619) was found between weeks incapacitated and bowling workload, supporting the finding that increased bowling workloads show a linear relationship with the increase in the number of weeks incapacitated from normal play. This study concluded that inadequate fitness, high bowling workload and bowling technique all have a multi-factorial role in predisposing a bowler to increased risk for injury. These variables did not act alone, but have all contributed to recurring injuries. The bowling action alone would not have been detrimental if the workloads were not in excess of the recommended guidelines. Furthermore the workload would not have been as detrimental if the bowlers were well conditioned and uninjured. Management of minor injuries and adequate recovery time, coupled with adequate and relevant fitness preparation would better prepare fast bowlers for the demands of the game.
- Full Text:
- Date Issued: 2008
The occupational aspirations and gender stereotypes of rural Xhosa-speaking senior primary children
- Authors: Longe, Paul Gavin
- Date: 2008
- Subjects: Vocational interests -- South Africa -- Research , Gender identity , School children -- South Africa -- Attitudes , Xhosa (African people) -- Attitudes
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:9919 , http://hdl.handle.net/10948/671 , Vocational interests -- South Africa -- Research , Gender identity , School children -- South Africa -- Attitudes , Xhosa (African people) -- Attitudes
- Description: South Africa provides a rich and challenging socio-political context in which to conduct career development research. South African children face a unique range of social, cultural and economic challenges such as poverty and the impact of HIV/AIDS on the family system which influence their career development. Internationally there has been a call for research that explores children’s career development as the majority of extant career research focuses its attention on the career development of adolescents and adults. The focus in South Africa is no different and despite the introduction of career education into the most recent school curriculum (Curriculum 21), there remains a void in South African child career development research. As such children’s career education and guidance has not been guided by local research findings. The findings of the present research will provide important baseline information relating to the career development of rural Xhosa-speaking senior primary school children. With this in mind, the present research aimed to explore and describe the occupational aspirations of male and female rural Xhosa-speaking senior primary school children. The present research also aimed to explore and describe the ways in which children assign gender-based stereotypes to different occupations. In order to provide a rich theoretical foundation for the present research, child developmental theories and developmental theories of career development as well as post-modern constructivist theories of career development have been used. The present research is quantitative in nature and makes use of the Revised Career Awareness Survey, a self-report questionnaire, which was originally designed to explore children’s knowledge and understanding of the world of work and to gain insight into the way in which they form gender-based occupational stereotypes. Three rural schools in the Eastern Cape Province of South Africa were selected using a non-probability, purposive sampling method. From these schools, a non probability, convenience sample of 292 grade 6 and 7 learners was asked to complete the measure. The information gathered was then coded into nominal categories and analysed using descriptive statistics. Results from the present research indicate that rural Xhosa-speaking senior primary school children tend to aspire towards more Social and Investigative type occupations in the high status level category. The findings showed that rural Xhosa speaking senior primary school children tend to limit the range of occupations which they believe men and women can do. Here it was found that Social type jobs and household chores were most frequently named as jobs that women can do. The children in the present research listed Realistic type occupations most frequently as jobs that men can do, and least often as being jobs that women can do. It was also established that housework activities and other ‘domestic’ jobs are not seen by the participants as jobs that men can do. The results of the present research should not only inform the field of child career development in South Africa, but can also be meaningfully applied to the development of future career education programs at the primary school level in South Africa.
- Full Text:
- Date Issued: 2008
- Authors: Longe, Paul Gavin
- Date: 2008
- Subjects: Vocational interests -- South Africa -- Research , Gender identity , School children -- South Africa -- Attitudes , Xhosa (African people) -- Attitudes
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:9919 , http://hdl.handle.net/10948/671 , Vocational interests -- South Africa -- Research , Gender identity , School children -- South Africa -- Attitudes , Xhosa (African people) -- Attitudes
- Description: South Africa provides a rich and challenging socio-political context in which to conduct career development research. South African children face a unique range of social, cultural and economic challenges such as poverty and the impact of HIV/AIDS on the family system which influence their career development. Internationally there has been a call for research that explores children’s career development as the majority of extant career research focuses its attention on the career development of adolescents and adults. The focus in South Africa is no different and despite the introduction of career education into the most recent school curriculum (Curriculum 21), there remains a void in South African child career development research. As such children’s career education and guidance has not been guided by local research findings. The findings of the present research will provide important baseline information relating to the career development of rural Xhosa-speaking senior primary school children. With this in mind, the present research aimed to explore and describe the occupational aspirations of male and female rural Xhosa-speaking senior primary school children. The present research also aimed to explore and describe the ways in which children assign gender-based stereotypes to different occupations. In order to provide a rich theoretical foundation for the present research, child developmental theories and developmental theories of career development as well as post-modern constructivist theories of career development have been used. The present research is quantitative in nature and makes use of the Revised Career Awareness Survey, a self-report questionnaire, which was originally designed to explore children’s knowledge and understanding of the world of work and to gain insight into the way in which they form gender-based occupational stereotypes. Three rural schools in the Eastern Cape Province of South Africa were selected using a non-probability, purposive sampling method. From these schools, a non probability, convenience sample of 292 grade 6 and 7 learners was asked to complete the measure. The information gathered was then coded into nominal categories and analysed using descriptive statistics. Results from the present research indicate that rural Xhosa-speaking senior primary school children tend to aspire towards more Social and Investigative type occupations in the high status level category. The findings showed that rural Xhosa speaking senior primary school children tend to limit the range of occupations which they believe men and women can do. Here it was found that Social type jobs and household chores were most frequently named as jobs that women can do. The children in the present research listed Realistic type occupations most frequently as jobs that men can do, and least often as being jobs that women can do. It was also established that housework activities and other ‘domestic’ jobs are not seen by the participants as jobs that men can do. The results of the present research should not only inform the field of child career development in South Africa, but can also be meaningfully applied to the development of future career education programs at the primary school level in South Africa.
- Full Text:
- Date Issued: 2008
The perceptions and experiences of out-of-school youth regarding youth services in KwaZakhele
- Authors: Mpini, Buyiswa Sylvia
- Date: 2008
- Subjects: Youth -- Services for -- South Africa -- Port Elizabeth , Youth -- South Africa -- Port Elizabeth , Youth -- Employment -- South Africa -- Port Elizabeth
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:10003 , http://hdl.handle.net/10948/667 , Youth -- Services for -- South Africa -- Port Elizabeth , Youth -- South Africa -- Port Elizabeth , Youth -- Employment -- South Africa -- Port Elizabeth
- Description: This research study has been conducted to explore and describe the perceptions and experiences of out-of-school youth regarding their access to the youth services available to them. A qualitative approach is followed and an exploratory, descriptive and contextual research design is utilized. The sample of the study was procured by means of purposive sampling. Data were collected by means of focus group discussions which were conducted using a questioning guide. Data were analysed according to the steps for qualitative data analysis provided by Tesch in Creswell (1994). To ensure the trustworthiness of the research findings, Guba’s model in Krefting (1991) was employed. The research findings were verified against the existing body of knowledge in order to compare and contrast the themes and sub-themes that emerged from the process of data analysis. The main themes that emerged from the study are lack of knowledge regarding available services, Needs or desires of out-of-school youth, hindrances or obstacles to access available youth services, suggestions for services relevant to needs of out-of-school youth and suggestions to make out-of-school youth aware of available services.
- Full Text:
- Date Issued: 2008
- Authors: Mpini, Buyiswa Sylvia
- Date: 2008
- Subjects: Youth -- Services for -- South Africa -- Port Elizabeth , Youth -- South Africa -- Port Elizabeth , Youth -- Employment -- South Africa -- Port Elizabeth
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:10003 , http://hdl.handle.net/10948/667 , Youth -- Services for -- South Africa -- Port Elizabeth , Youth -- South Africa -- Port Elizabeth , Youth -- Employment -- South Africa -- Port Elizabeth
- Description: This research study has been conducted to explore and describe the perceptions and experiences of out-of-school youth regarding their access to the youth services available to them. A qualitative approach is followed and an exploratory, descriptive and contextual research design is utilized. The sample of the study was procured by means of purposive sampling. Data were collected by means of focus group discussions which were conducted using a questioning guide. Data were analysed according to the steps for qualitative data analysis provided by Tesch in Creswell (1994). To ensure the trustworthiness of the research findings, Guba’s model in Krefting (1991) was employed. The research findings were verified against the existing body of knowledge in order to compare and contrast the themes and sub-themes that emerged from the process of data analysis. The main themes that emerged from the study are lack of knowledge regarding available services, Needs or desires of out-of-school youth, hindrances or obstacles to access available youth services, suggestions for services relevant to needs of out-of-school youth and suggestions to make out-of-school youth aware of available services.
- Full Text:
- Date Issued: 2008
The psychofortology of female psychiatric out-patients living with mood and anxiety disorders
- Authors: Steyn, Chantelle
- Date: 2008
- Subjects: Anxiety disorders -- South Africa , Stress (Psychology) , Women -- Mental health -- South Africa
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:9914 , http://hdl.handle.net/10948/878 , Anxiety disorders -- South Africa , Stress (Psychology) , Women -- Mental health -- South Africa
- Description: An overview of recent literature indicates that mood and anxiety disorders are the most prevalent of all psychiatric disorders. Depression and anxiety are estimated to be two of the most important causes of disease burden in the world and appear to be more prevalent among women than men. A skewed distribution exists in mood and anxiety research with limited research being done into the area of gender, more specifically females with these disorders. The present study therefore intended to explore and describe the psychofortology of female psychiatric out-patients living with mood and anxiety disorders. An exploratory descriptive research design was used and participants were selected by means of non-probability purposive sampling. The sample consisted of 60 female psychiatric out-patients who were selected for inclusion based on predetermined inclusion criteria. Data were gathered through the administration of a biographical questionnaire, Hammer and Marting’s Coping Resources Inventory (CRI), Antonovsky’s Sense of Coherence Scale (SOC-29), Diener, Emmons, Larson and Griffin’s Satisfaction with Life Scale (SWLS) and Kamman and Flett’s Affectometer-2 (AFM-2). These data were then analyzed according to the aims of the study by the use of descriptive statistics, inferential statistics and multivariate data analysis, namely, K-means cluster analysis. The results indicated that the female psychiatric out-patients with mood and anxiety disorders were generally experiencing lower levels of coping and subjective well-being. The results indicated three clusters which appeared to have no statistical or practical significance to each other. The first cluster could be characterized as being “of relatively high psychofortology” and patients in this cluster presented with better coping and subjective well-being. The patients in cluster two could be characterized as being “of relatively average psychofortology” and the third cluster as being “of relatively low psychofortology”. The third cluster was characterized by patients who were experiencing poorer levels of coping and subjective well-being.
- Full Text:
- Date Issued: 2008
- Authors: Steyn, Chantelle
- Date: 2008
- Subjects: Anxiety disorders -- South Africa , Stress (Psychology) , Women -- Mental health -- South Africa
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:9914 , http://hdl.handle.net/10948/878 , Anxiety disorders -- South Africa , Stress (Psychology) , Women -- Mental health -- South Africa
- Description: An overview of recent literature indicates that mood and anxiety disorders are the most prevalent of all psychiatric disorders. Depression and anxiety are estimated to be two of the most important causes of disease burden in the world and appear to be more prevalent among women than men. A skewed distribution exists in mood and anxiety research with limited research being done into the area of gender, more specifically females with these disorders. The present study therefore intended to explore and describe the psychofortology of female psychiatric out-patients living with mood and anxiety disorders. An exploratory descriptive research design was used and participants were selected by means of non-probability purposive sampling. The sample consisted of 60 female psychiatric out-patients who were selected for inclusion based on predetermined inclusion criteria. Data were gathered through the administration of a biographical questionnaire, Hammer and Marting’s Coping Resources Inventory (CRI), Antonovsky’s Sense of Coherence Scale (SOC-29), Diener, Emmons, Larson and Griffin’s Satisfaction with Life Scale (SWLS) and Kamman and Flett’s Affectometer-2 (AFM-2). These data were then analyzed according to the aims of the study by the use of descriptive statistics, inferential statistics and multivariate data analysis, namely, K-means cluster analysis. The results indicated that the female psychiatric out-patients with mood and anxiety disorders were generally experiencing lower levels of coping and subjective well-being. The results indicated three clusters which appeared to have no statistical or practical significance to each other. The first cluster could be characterized as being “of relatively high psychofortology” and patients in this cluster presented with better coping and subjective well-being. The patients in cluster two could be characterized as being “of relatively average psychofortology” and the third cluster as being “of relatively low psychofortology”. The third cluster was characterized by patients who were experiencing poorer levels of coping and subjective well-being.
- Full Text:
- Date Issued: 2008
The psychofortology of women undergoing infertility treatment at a privately managed health care unit
- Authors: Phillips, Kerry Megan
- Date: 2008
- Subjects: Adjustment (Psychology) -- South Africa , Stress (Psychology) -- South Africa
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:9917 , http://hdl.handle.net/10948/729 , Adjustment (Psychology) -- South Africa , Stress (Psychology) -- South Africa
- Description: Infertility, the inability to conceive a child or carry a pregnancy to birth, is an age-old concern, the anguish and disappointment of which is universal regardless of the etiology. Although technological advancement in the field of reproductive medicine has led to the possibilities of near miraculous procedures, infertility treatment offers the hope of conception without guaranteeing it and places the couple under tremendous emotional and financial strain. A moderate amount of research has explored the coping of individuals and the couple experiencing infertility, but has been primarily orientated to a clinical and medical focus as well as an exploration of the pathological symptoms that individuals may experience. This study has adopted a psychofortigenic focus and explored and described the coping (i.e., the coping resources and sense of coherence) and subjective well-being (i.e., satisfaction with life and happiness) of women undergoing infertility treatment. An exploratory descriptive research design was used and the participants were selected by means of non-probability purposive sampling. The sample consisted of 61women who were aged 30 years and older and required that they had received infertility treatment at a privately managed health care unit. Contextual and biographical data were gathered by means of a biographical questionnaire. Hammer and Marting’s (1988) Coping Resources Inventory was used to assess the participant’s coping resources. Antonovsky’s (1987) Orientation to Life Scale was used to measure the construct of Sense of Coherence. The Satisfaction with Life Scale by Diener, Emmons, Larsen and Griffin (1985) was used to assess respondents’ overall satisfaction with life while Kamman and Flett’s (1983) Affectometer-2 (AFM-2) was used to measure participants’ subjective happiness. The data were analysed using descriptive statistics and cluster analysis. The results of the CRI indicated a total coping resources score slightly below the mean of 50 as established by Hammer and Marting (1988). Results revealed that the highest mean score was obtained on the spiritual/philosophical subscale. Results from the SOC-29 indicated that the women sampled had an average Sense of Coherence. In terms of the construct of satisfaction with life as measured by the Satisfaction with Life Scale, the results indicated that the participants were slightly satisfied with their lives. Results from the AFM-2 revealed that the majority of participants experienced a below average feeling of happiness. Cluster analysis revealed three distinct clusters that differed significantly across the four measures.
- Full Text:
- Date Issued: 2008
- Authors: Phillips, Kerry Megan
- Date: 2008
- Subjects: Adjustment (Psychology) -- South Africa , Stress (Psychology) -- South Africa
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:9917 , http://hdl.handle.net/10948/729 , Adjustment (Psychology) -- South Africa , Stress (Psychology) -- South Africa
- Description: Infertility, the inability to conceive a child or carry a pregnancy to birth, is an age-old concern, the anguish and disappointment of which is universal regardless of the etiology. Although technological advancement in the field of reproductive medicine has led to the possibilities of near miraculous procedures, infertility treatment offers the hope of conception without guaranteeing it and places the couple under tremendous emotional and financial strain. A moderate amount of research has explored the coping of individuals and the couple experiencing infertility, but has been primarily orientated to a clinical and medical focus as well as an exploration of the pathological symptoms that individuals may experience. This study has adopted a psychofortigenic focus and explored and described the coping (i.e., the coping resources and sense of coherence) and subjective well-being (i.e., satisfaction with life and happiness) of women undergoing infertility treatment. An exploratory descriptive research design was used and the participants were selected by means of non-probability purposive sampling. The sample consisted of 61women who were aged 30 years and older and required that they had received infertility treatment at a privately managed health care unit. Contextual and biographical data were gathered by means of a biographical questionnaire. Hammer and Marting’s (1988) Coping Resources Inventory was used to assess the participant’s coping resources. Antonovsky’s (1987) Orientation to Life Scale was used to measure the construct of Sense of Coherence. The Satisfaction with Life Scale by Diener, Emmons, Larsen and Griffin (1985) was used to assess respondents’ overall satisfaction with life while Kamman and Flett’s (1983) Affectometer-2 (AFM-2) was used to measure participants’ subjective happiness. The data were analysed using descriptive statistics and cluster analysis. The results of the CRI indicated a total coping resources score slightly below the mean of 50 as established by Hammer and Marting (1988). Results revealed that the highest mean score was obtained on the spiritual/philosophical subscale. Results from the SOC-29 indicated that the women sampled had an average Sense of Coherence. In terms of the construct of satisfaction with life as measured by the Satisfaction with Life Scale, the results indicated that the participants were slightly satisfied with their lives. Results from the AFM-2 revealed that the majority of participants experienced a below average feeling of happiness. Cluster analysis revealed three distinct clusters that differed significantly across the four measures.
- Full Text:
- Date Issued: 2008
Treatment and care of children and adolescents diagnosed with Attention deficit/Hyperactivity disorder
- Authors: Snyman, Sanmari
- Date: 2008
- Subjects: Attention-deficit disorder in adolescence , Hyperactive children -- South Africa -- Port Elizabeth
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:10144 , http://hdl.handle.net/10948/871 , Attention-deficit disorder in adolescence , Hyperactive children -- South Africa -- Port Elizabeth
- Description: Background: In recent years the incidence of Attention Deficit/Hyperactivity Disorder (ADHD) has increased. Objectives: The primary aim of the study was to determine the treatment of children and adolescents diagnosed with ADHD in South Africa and more specifically the Eastern Cape. Methods: The study consisted of two parts, a retrospective drug utilisation study and a questionnaire survey. The drug utilisation study was conducted on chronic medication records of a private sector medical scheme administrator and contained records from 1994 to 2006. A total of 42 250 records representing 8 274 patients and 4 001 families, were analysed. The questionnaire survey was conducted in the Eastern Cape. The questionnaires were distributed by responsible pharmacists to parents of children receiving medication for the treatment of ADHD from his/her pharmacy. Fifty one completed questionnaires were analysed. Results: The average age of patients in the drug utilisation study were 14.28 (SD = 5.50) years. Males represented 77.37 percent of patients. Ritalin® 10 mg was the most frequently prescribed methylphenidate-containing product, followed by Ritalin® LA 20 mg. The two most frequently prescribed active ingredients apart from methylphenidate were fluticasone and budesonide. The two most common comorbid conditions were allergic rhinitis and asthma. The average age of patients in the questionnaire survey was 10.26 (SD = 2.51) years. Males represented 73.58 percent of patients. A third of patients had relatives previously diagnosed with ADHD. Ritalin® 10 mg was the most frequently prescribed methylphenidate-containing product. Conclusion: ADHD is a complex life-long disorder. It does not only affect the child diagnosed with the disorder, but also has effects on the family, schooling system and peer relationship. Therefore, more studies regarding the incidence and treatment of ADHD need to be conducted in South Africa.
- Full Text:
- Date Issued: 2008
- Authors: Snyman, Sanmari
- Date: 2008
- Subjects: Attention-deficit disorder in adolescence , Hyperactive children -- South Africa -- Port Elizabeth
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:10144 , http://hdl.handle.net/10948/871 , Attention-deficit disorder in adolescence , Hyperactive children -- South Africa -- Port Elizabeth
- Description: Background: In recent years the incidence of Attention Deficit/Hyperactivity Disorder (ADHD) has increased. Objectives: The primary aim of the study was to determine the treatment of children and adolescents diagnosed with ADHD in South Africa and more specifically the Eastern Cape. Methods: The study consisted of two parts, a retrospective drug utilisation study and a questionnaire survey. The drug utilisation study was conducted on chronic medication records of a private sector medical scheme administrator and contained records from 1994 to 2006. A total of 42 250 records representing 8 274 patients and 4 001 families, were analysed. The questionnaire survey was conducted in the Eastern Cape. The questionnaires were distributed by responsible pharmacists to parents of children receiving medication for the treatment of ADHD from his/her pharmacy. Fifty one completed questionnaires were analysed. Results: The average age of patients in the drug utilisation study were 14.28 (SD = 5.50) years. Males represented 77.37 percent of patients. Ritalin® 10 mg was the most frequently prescribed methylphenidate-containing product, followed by Ritalin® LA 20 mg. The two most frequently prescribed active ingredients apart from methylphenidate were fluticasone and budesonide. The two most common comorbid conditions were allergic rhinitis and asthma. The average age of patients in the questionnaire survey was 10.26 (SD = 2.51) years. Males represented 73.58 percent of patients. A third of patients had relatives previously diagnosed with ADHD. Ritalin® 10 mg was the most frequently prescribed methylphenidate-containing product. Conclusion: ADHD is a complex life-long disorder. It does not only affect the child diagnosed with the disorder, but also has effects on the family, schooling system and peer relationship. Therefore, more studies regarding the incidence and treatment of ADHD need to be conducted in South Africa.
- Full Text:
- Date Issued: 2008
Utility of the cognitive assessment system (CAS) to predict reading proficiency in grade 1
- Authors: Hüttenrauch, Maria Eleonore
- Date: 2008
- Subjects: Das-Naglieri Cognitive Assessment System , Intelligence tests for preliterates , Cognition in children , Reading disability
- Language: English
- Type: Thesis , Doctoral , DPhil
- Identifier: vital:9839 , http://hdl.handle.net/10948/965 , Das-Naglieri Cognitive Assessment System , Intelligence tests for preliterates , Cognition in children , Reading disability
- Description: Reading disability, as the most commonly diagnosed learning disability, continues to pose a tenacious problem to teachers, practitioners and researchers. In an effort to understand the causes of reading disability, voluminous research has been undertaken over the past decades to pinpoint its causes or developmental stumbling blocks. One approach, the Planning, Attention, Simultaneous, and Successive processing (PASS) model, combines neuropsychological theory with elements from cognitive psychology. Based on this model, the Cognitive Assessment System (CAS), as well as methods of intervention for reading disability were developed. Although many studies have been conducted that investigated reading disability in terms of PASS cognitive processes, the final version of the CAS and its predictive utility with respect to reading disability has not been explored to date. The present study aimed to investigate the utility of the CAS, administered at the beginning of grade 1, to predict reading proficiency at the end of grade 1. The sample was comprised of 119 “average” (i.e., belonging to the general population) grade 1 students from schools of the Calgary Board of Education (CBE). The Basic Battery of the CAS was administered to the children in the sample at the beginning of grade 1, as well as four reading subtests of the Woodcock-Johnson Tests of Achievement – Third Edition (WJ-III ACH) at the end of grade 1. The WJ-III ACH yielded a cluster score for basic reading and one for reading comprehension. Correlational and regression analyses were used to address the first aim of this study, namely to explore the relationship between students’ scores on the CAS and their later reading proficiency. To this end, the children’s CAS Full Scale scores and WJ-III ACH cluster scores were subjected to a hierarchical regression analysis, whereby age, gender, and - xviii - SES were kept constant by entering them first in the equation. Next, the relationship between students’ PASS scale scores and the CAS subtest scores respectively and scores on the WJ-III ACH Basic Reading and Reading Comprehension Cluster scores was explored by means of stepwise regression analysis. To improve on the generalizability of results, the regression analyses were conducted on a randomly drawn analysis sample consisting of 80% of the sample, and cross-validated on the remaining 20% of the sample. The second aim of the present study was to ascertain whether clusters could be identified on the basis of CAS performance as well as levels of reading proficiency. To this end, the children’s CAS FS scores, PASS scale scores, and CAS subtest scores were subjected to cluster analyses. The investigation of aim 1 yielded some encouraging results, in that it was found that, together with the covariates: • The CAS FS emerged as a moderately strong predictor of both basic reading and reading comprehension; • Successive processing, in particular the Word Series subtest, significantly predicted basic reading skills; • Successive and simultaneous processing, particularly the Nonverbal Matrices and Sentence Repetition subtests, were significant predictors of reading comprehension; The second aim, which explored the relationship between patterns of CAS cognitive processes and their relationship with reading proficiency, yielded: • Two clusters with distinctly different PASS scale scores and with significant differences between their levels of reading proficiency. Higher PASS scales scores, particularly on the Attention and Planning scales, were associated with higher reading proficiency scores. • Four clusters with distinctly different CAS subtest scores that were also associated with distinctly different levels of reading performance. Good - xix - reading proficiency was associated with good CAS performance, whereas weaker reading proficiency was linked to weaker CAS performance. Biographical variables, such as age and SES were found to be related to performance on the CAS and reading proficiency, while gender did not emerge as an important predictor variable. The present study demonstrated the usefulness of the CAS, particularly its Successive and Simultaneous scales, as potential early predictor of reading disability. An exploration of the relationship between patterns of CAS cognitive processes and later reading proficiency also yielded encouraging and interesting results.
- Full Text:
- Date Issued: 2008
- Authors: Hüttenrauch, Maria Eleonore
- Date: 2008
- Subjects: Das-Naglieri Cognitive Assessment System , Intelligence tests for preliterates , Cognition in children , Reading disability
- Language: English
- Type: Thesis , Doctoral , DPhil
- Identifier: vital:9839 , http://hdl.handle.net/10948/965 , Das-Naglieri Cognitive Assessment System , Intelligence tests for preliterates , Cognition in children , Reading disability
- Description: Reading disability, as the most commonly diagnosed learning disability, continues to pose a tenacious problem to teachers, practitioners and researchers. In an effort to understand the causes of reading disability, voluminous research has been undertaken over the past decades to pinpoint its causes or developmental stumbling blocks. One approach, the Planning, Attention, Simultaneous, and Successive processing (PASS) model, combines neuropsychological theory with elements from cognitive psychology. Based on this model, the Cognitive Assessment System (CAS), as well as methods of intervention for reading disability were developed. Although many studies have been conducted that investigated reading disability in terms of PASS cognitive processes, the final version of the CAS and its predictive utility with respect to reading disability has not been explored to date. The present study aimed to investigate the utility of the CAS, administered at the beginning of grade 1, to predict reading proficiency at the end of grade 1. The sample was comprised of 119 “average” (i.e., belonging to the general population) grade 1 students from schools of the Calgary Board of Education (CBE). The Basic Battery of the CAS was administered to the children in the sample at the beginning of grade 1, as well as four reading subtests of the Woodcock-Johnson Tests of Achievement – Third Edition (WJ-III ACH) at the end of grade 1. The WJ-III ACH yielded a cluster score for basic reading and one for reading comprehension. Correlational and regression analyses were used to address the first aim of this study, namely to explore the relationship between students’ scores on the CAS and their later reading proficiency. To this end, the children’s CAS Full Scale scores and WJ-III ACH cluster scores were subjected to a hierarchical regression analysis, whereby age, gender, and - xviii - SES were kept constant by entering them first in the equation. Next, the relationship between students’ PASS scale scores and the CAS subtest scores respectively and scores on the WJ-III ACH Basic Reading and Reading Comprehension Cluster scores was explored by means of stepwise regression analysis. To improve on the generalizability of results, the regression analyses were conducted on a randomly drawn analysis sample consisting of 80% of the sample, and cross-validated on the remaining 20% of the sample. The second aim of the present study was to ascertain whether clusters could be identified on the basis of CAS performance as well as levels of reading proficiency. To this end, the children’s CAS FS scores, PASS scale scores, and CAS subtest scores were subjected to cluster analyses. The investigation of aim 1 yielded some encouraging results, in that it was found that, together with the covariates: • The CAS FS emerged as a moderately strong predictor of both basic reading and reading comprehension; • Successive processing, in particular the Word Series subtest, significantly predicted basic reading skills; • Successive and simultaneous processing, particularly the Nonverbal Matrices and Sentence Repetition subtests, were significant predictors of reading comprehension; The second aim, which explored the relationship between patterns of CAS cognitive processes and their relationship with reading proficiency, yielded: • Two clusters with distinctly different PASS scale scores and with significant differences between their levels of reading proficiency. Higher PASS scales scores, particularly on the Attention and Planning scales, were associated with higher reading proficiency scores. • Four clusters with distinctly different CAS subtest scores that were also associated with distinctly different levels of reading performance. Good - xix - reading proficiency was associated with good CAS performance, whereas weaker reading proficiency was linked to weaker CAS performance. Biographical variables, such as age and SES were found to be related to performance on the CAS and reading proficiency, while gender did not emerge as an important predictor variable. The present study demonstrated the usefulness of the CAS, particularly its Successive and Simultaneous scales, as potential early predictor of reading disability. An exploration of the relationship between patterns of CAS cognitive processes and later reading proficiency also yielded encouraging and interesting results.
- Full Text:
- Date Issued: 2008
Whole body vibration training and physical fitness of persons with diabetes melitus type II
- Authors: Bekker, Lindy
- Date: 2008
- Subjects: Diabetes -- Exercise therapy , Vibration -- Physiological effect
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:10096 , http://hdl.handle.net/10948/672 , Diabetes -- Exercise therapy , Vibration -- Physiological effect
- Description: The aim of this study was to determine the effect of whole body vibration training on selected health and fitness parameters, including: blood glucose levels, blood pressure, anthropometric profile, muscular flexibility, muscular strength, muscular endurance, and aerobic endurance of persons with diabetes mellitus type II. The study was conducted in a descriptive, explorative manner utilizing a quasiexperimental design with an equistatic approach, employing match-pair design to participant grouping. The experimental design was a non-randomized two-group pre- and post-test design, in which approximately 16 male and female participants, who were chosen through convenience and snowball sampling with diabetes mellitus type II, completed the study. Pre- and post-test analysis was performed at the Biokinetics and Sport Science Unit. The whole body vibration training (experimental) group, trained three times a week for a period of ten weeks, performing exercises on the vibration platform with progressive increments in the intensity, duration, and number of the exercises. The control group remained sedentary throughout the intervention period. The dependant variables were analyzed using descriptive statistics. ANOVA was done to determine pre- and post-test differences for both the experimental and control groups for all the variables. Post-Hoc analysis was done to determine and compare differences which may have existed between the experimental and control groups, with practical significance being determined by Cohen’s D analysis. The analysis of the results revealed significant improvements in systolic blood pressure, muscular strength, muscular endurance, and aerobic endurance.
- Full Text:
- Date Issued: 2008
- Authors: Bekker, Lindy
- Date: 2008
- Subjects: Diabetes -- Exercise therapy , Vibration -- Physiological effect
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:10096 , http://hdl.handle.net/10948/672 , Diabetes -- Exercise therapy , Vibration -- Physiological effect
- Description: The aim of this study was to determine the effect of whole body vibration training on selected health and fitness parameters, including: blood glucose levels, blood pressure, anthropometric profile, muscular flexibility, muscular strength, muscular endurance, and aerobic endurance of persons with diabetes mellitus type II. The study was conducted in a descriptive, explorative manner utilizing a quasiexperimental design with an equistatic approach, employing match-pair design to participant grouping. The experimental design was a non-randomized two-group pre- and post-test design, in which approximately 16 male and female participants, who were chosen through convenience and snowball sampling with diabetes mellitus type II, completed the study. Pre- and post-test analysis was performed at the Biokinetics and Sport Science Unit. The whole body vibration training (experimental) group, trained three times a week for a period of ten weeks, performing exercises on the vibration platform with progressive increments in the intensity, duration, and number of the exercises. The control group remained sedentary throughout the intervention period. The dependant variables were analyzed using descriptive statistics. ANOVA was done to determine pre- and post-test differences for both the experimental and control groups for all the variables. Post-Hoc analysis was done to determine and compare differences which may have existed between the experimental and control groups, with practical significance being determined by Cohen’s D analysis. The analysis of the results revealed significant improvements in systolic blood pressure, muscular strength, muscular endurance, and aerobic endurance.
- Full Text:
- Date Issued: 2008
Whole body vibration training effects on asthma specific pulmonary variables
- Authors: Mansell, Ingrid Joan
- Date: 2008
- Subjects: Vibration -- Physiological effect , Asthma -- Exercise therapy , Asthma -- Treatment
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:10112 , http://hdl.handle.net/10948/d1020953
- Description: The aim of the study was to determine and document evidence of the comparative effect of a 12- week whole body vibration training programme, exercise training programme and sedentary control group on the anthropometric profile, aerobic capacity, lung volumes and hence, the pulmonary capacity in people with asthma. The study used a descriptive, exploratory, quasi-experimental research approach employing randomised pairing to classify participants into either the whole body vibration therapy or exercise training group. Accidental and snowball sampling was used to identify and obtain a base of volunteers. A three-group pre-test/post-test design was employed to gain insight into statistical differences that might be apparent between the whole body vibration therapy group, the exercise group and the control group, and which could potentially be attributed to participation in the whole body vibration exercise programme. Randomised pairing for participant selection was selected because of the potential effects varying pulmonary variables might have had on the reliability of the study. A Physical Activity Selection Criteria Questionnaire was completed by participants to ascertain baseline physical activity readiness and as a means of determining selection criteria for their allocation to the whole body vibration training group, the experimental exercise group or the true control group. The pre-test/post-test assessment made use of a combination evaluation that incorporated an anthropometric profile assessment of height, weight, biceps, triceps, subscapular and suprailliac skinfolds, waist and hip circumference and posture, an aerobic capacity evaluation that incorporated aspects of both the YMCA and Astrand and Rhyming Physical Work Capacity (PWC) evaluation on a cycle ergometer and, lastly, a pulmonary variable assessment that made use of both the Datospir Peak-10 peak flow meter and the Spirovit SP-100AT spirometry unit integrated into the Cardiovit AT-6 model for all spirometry measurements. Participants were required to complete either the whole-body vibration or the exercise training programme a minimum of twice a week and a maximum of four times over the same period. The duration of the intervention programmes was approximately 30 minutes and consisted of three sections including a warm-up comprising flexibility exercises, whole body strength training exercises, and a cool-down which, in turn, consisted of massage exercises or replicated flexibility exercises. The main difference between the whole body vibration and exercise training group thus lay in the exclusion of the use of vibration for those participants assigned to the exercise training programme. Analysis of data was performed using descriptive and inferential statistics with the help of a qualified statistician. The identified variables were tested at a 95 percent level of probability (p<0.05) as recommended by Thomas and Nelson (1996:117). Descriptive data, in the form of a statistical mean, standard deviation, minimum, median and maximum values, obtained during this study were reported in the form of a t-score for selected anthropometric and pulmonary variables. The 12-week intervention programme, on analysis of the results, produced statistically insignificant improvements in the variables of anthropometric profile, aerobic capacity and lung volumes identified as determinants of, and factors influencing, the cardiorespiratory fitness level of participants with asthma and hence, the subsequent severity of this chronic condition. However, slight mean increases for the whole body vibration training group were evident for certain variables identified in this study. Based on the results, the inference could be made that whole body vibration therapy and exercise were both effective modes of training to improve the cardiorespiratory fitness level of people with asthma, but the results of the study did not show sufficient practical or statistical significance to verify the assumption that whole body vibration training was a method superior to conventional exercise training. Hence, the significance of whole body vibration training on the pulmonary variables of people with asthma could not be determined. The researcher recommends that future studies be undertaken to verify whether whole body vibration training incorporating larger participant groups could produce significant improvements in pulmonary variables in people with asthma.
- Full Text:
- Date Issued: 2008
- Authors: Mansell, Ingrid Joan
- Date: 2008
- Subjects: Vibration -- Physiological effect , Asthma -- Exercise therapy , Asthma -- Treatment
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:10112 , http://hdl.handle.net/10948/d1020953
- Description: The aim of the study was to determine and document evidence of the comparative effect of a 12- week whole body vibration training programme, exercise training programme and sedentary control group on the anthropometric profile, aerobic capacity, lung volumes and hence, the pulmonary capacity in people with asthma. The study used a descriptive, exploratory, quasi-experimental research approach employing randomised pairing to classify participants into either the whole body vibration therapy or exercise training group. Accidental and snowball sampling was used to identify and obtain a base of volunteers. A three-group pre-test/post-test design was employed to gain insight into statistical differences that might be apparent between the whole body vibration therapy group, the exercise group and the control group, and which could potentially be attributed to participation in the whole body vibration exercise programme. Randomised pairing for participant selection was selected because of the potential effects varying pulmonary variables might have had on the reliability of the study. A Physical Activity Selection Criteria Questionnaire was completed by participants to ascertain baseline physical activity readiness and as a means of determining selection criteria for their allocation to the whole body vibration training group, the experimental exercise group or the true control group. The pre-test/post-test assessment made use of a combination evaluation that incorporated an anthropometric profile assessment of height, weight, biceps, triceps, subscapular and suprailliac skinfolds, waist and hip circumference and posture, an aerobic capacity evaluation that incorporated aspects of both the YMCA and Astrand and Rhyming Physical Work Capacity (PWC) evaluation on a cycle ergometer and, lastly, a pulmonary variable assessment that made use of both the Datospir Peak-10 peak flow meter and the Spirovit SP-100AT spirometry unit integrated into the Cardiovit AT-6 model for all spirometry measurements. Participants were required to complete either the whole-body vibration or the exercise training programme a minimum of twice a week and a maximum of four times over the same period. The duration of the intervention programmes was approximately 30 minutes and consisted of three sections including a warm-up comprising flexibility exercises, whole body strength training exercises, and a cool-down which, in turn, consisted of massage exercises or replicated flexibility exercises. The main difference between the whole body vibration and exercise training group thus lay in the exclusion of the use of vibration for those participants assigned to the exercise training programme. Analysis of data was performed using descriptive and inferential statistics with the help of a qualified statistician. The identified variables were tested at a 95 percent level of probability (p<0.05) as recommended by Thomas and Nelson (1996:117). Descriptive data, in the form of a statistical mean, standard deviation, minimum, median and maximum values, obtained during this study were reported in the form of a t-score for selected anthropometric and pulmonary variables. The 12-week intervention programme, on analysis of the results, produced statistically insignificant improvements in the variables of anthropometric profile, aerobic capacity and lung volumes identified as determinants of, and factors influencing, the cardiorespiratory fitness level of participants with asthma and hence, the subsequent severity of this chronic condition. However, slight mean increases for the whole body vibration training group were evident for certain variables identified in this study. Based on the results, the inference could be made that whole body vibration therapy and exercise were both effective modes of training to improve the cardiorespiratory fitness level of people with asthma, but the results of the study did not show sufficient practical or statistical significance to verify the assumption that whole body vibration training was a method superior to conventional exercise training. Hence, the significance of whole body vibration training on the pulmonary variables of people with asthma could not be determined. The researcher recommends that future studies be undertaken to verify whether whole body vibration training incorporating larger participant groups could produce significant improvements in pulmonary variables in people with asthma.
- Full Text:
- Date Issued: 2008
A drug utilisation review of Isotretinoin in the management of acne
- Authors: Burger, Solé
- Date: 2007
- Subjects: Acne -- Treatment , Isotretinoin
- Language: English
- Type: Thesis , Masters , MPharm
- Identifier: vital:10147 , http://hdl.handle.net/10948/673 , Acne -- Treatment , Isotretinoin
- Description: Acne is a common, chronic disorder that affects many adolescents. The most effective acne medication is systemic isotretinoin. It provides a permanent cure for many patients, but has various side effects. A South African Acne Treatment Guideline was introduced in 2005. Adherence to this guideline could lead to safer, more effective acne management. The primary aim of this study was to investigate the appropriateness of medications prescribed in the treatment of acne in South Africa, and to evaluate the safety and efficacy of systemic isotretinoin utilised by patients in the Nelson Mandela Metropole (NMM). A drug utilisation study (including 18 803 South African acne patients’ chronic prescription data between 2000 and 2005) and a patient questionnaire survey (including information from 57 patients in the NMM who used systemic isotretinoin) were conducted. Basic descriptive and interferential statistics were calculated. The drug utilisation study revealed that systemic antibiotics were the acne treatment prescribed to most (43.3 percent) patients, followed by 42.1 percent of patients on systemic isotretinoin, 33.2 percent on hormonal therapy and 18.9 percent on topical therapy. Topical retinoids were underused. The questionnaire survey indicated a lack of compliance by prescribers with guideline recommendations regarding the prescription (and accompanying counselling and monitoring) of isotretinoin. Incorrect cumulative doses were frequently prescribed, and a lack of proper implementation of pregnancy prevention measures was evident. The majority of isotretinoin patients reported a high efficacy of isotretinoin in clearing their acne.
- Full Text:
- Date Issued: 2007
- Authors: Burger, Solé
- Date: 2007
- Subjects: Acne -- Treatment , Isotretinoin
- Language: English
- Type: Thesis , Masters , MPharm
- Identifier: vital:10147 , http://hdl.handle.net/10948/673 , Acne -- Treatment , Isotretinoin
- Description: Acne is a common, chronic disorder that affects many adolescents. The most effective acne medication is systemic isotretinoin. It provides a permanent cure for many patients, but has various side effects. A South African Acne Treatment Guideline was introduced in 2005. Adherence to this guideline could lead to safer, more effective acne management. The primary aim of this study was to investigate the appropriateness of medications prescribed in the treatment of acne in South Africa, and to evaluate the safety and efficacy of systemic isotretinoin utilised by patients in the Nelson Mandela Metropole (NMM). A drug utilisation study (including 18 803 South African acne patients’ chronic prescription data between 2000 and 2005) and a patient questionnaire survey (including information from 57 patients in the NMM who used systemic isotretinoin) were conducted. Basic descriptive and interferential statistics were calculated. The drug utilisation study revealed that systemic antibiotics were the acne treatment prescribed to most (43.3 percent) patients, followed by 42.1 percent of patients on systemic isotretinoin, 33.2 percent on hormonal therapy and 18.9 percent on topical therapy. Topical retinoids were underused. The questionnaire survey indicated a lack of compliance by prescribers with guideline recommendations regarding the prescription (and accompanying counselling and monitoring) of isotretinoin. Incorrect cumulative doses were frequently prescribed, and a lack of proper implementation of pregnancy prevention measures was evident. The majority of isotretinoin patients reported a high efficacy of isotretinoin in clearing their acne.
- Full Text:
- Date Issued: 2007
Accelerated staff turnover among professional nurses at a district hospital
- Authors: Toni, Gladys Nosisana
- Date: 2007
- Subjects: Labor turnover -- South Africa -- Eastern Cape , Nurses -- Employment -- South Africa -- Eastern Cape , Hospitals -- South Africa -- Eastern Cape -- Personnel management
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:10039 , http://hdl.handle.net/10948/620 , Labor turnover -- South Africa -- Eastern Cape , Nurses -- Employment -- South Africa -- Eastern Cape , Hospitals -- South Africa -- Eastern Cape -- Personnel management
- Description: The study emanated from the researcher’s experience and involvement in clinical nursing and nursing management. The researcher noted how heavy losses of recruited professional nurses might have had an influence on the quality of service delivery. It is a costly and time-consuming task to recruit enough nurses into the profession and retention of staff is especially difficult. There had been a significant increase in the number of professional nurses leaving the district hospitals either to primary health care service, private hospitals or other countries. Before the commencement of the study the turnover rate at the district hospital where the study was conducted, almost doubled the accepted norm, which was ten percent of the staff. For those reasons the researcher decided to conduct a study named, “Accelerated staff turnover among professional nurses at a district hospital.” The constant heavy losses of qualified nurses from the profession constitute one of the serious challenges for nursing managers. The researcher wanted answers to the following question: “What were your experiences of your job as a professional nurse at the district hospital?” The objectives of the study were: · to explore and describe factors leading to high staff turnover of professional nurses at a district hospital · to develop guidelines to help retain professional nurses. The design of this study, which was conducted in one of the district hospitals in the Makana Local Service Area in the Eastern Cape, is qualitative, descriptive and contextual. Informed permission for conducting the research was obtained from relevant authorities and participants were asked to sign a consent form before the researcher proceeded with the study. Participants that met the selection criteria were selected by means of purposive sampling. Data was obtained by means of semi-structured telephonic interviews that were audio-taped and later transcribed verbatim. To ensure trustworthiness of the study, the researcher applied the four strategies as proposed by Lincoln and Guba (De Vos, 2002:351) namely, credibility, transferability, dependability and confirmability. Collected data was analysed according to the descriptive method proposed by Tesch (in Creswell, 1994:154). The services of an independent coder, who was provided with transcripts and a protocol to guide data analysis, were utilised. A consensus meeting was held between the researcher and the independent coder to discuss the identified themes and sub-themes. Following the data analysis, a literature control was undertaken to highlight the similarities to and differences in comparison between this and previous studies. Four major themes and sub-themes were identified through analysis.
- Full Text:
- Date Issued: 2007
- Authors: Toni, Gladys Nosisana
- Date: 2007
- Subjects: Labor turnover -- South Africa -- Eastern Cape , Nurses -- Employment -- South Africa -- Eastern Cape , Hospitals -- South Africa -- Eastern Cape -- Personnel management
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:10039 , http://hdl.handle.net/10948/620 , Labor turnover -- South Africa -- Eastern Cape , Nurses -- Employment -- South Africa -- Eastern Cape , Hospitals -- South Africa -- Eastern Cape -- Personnel management
- Description: The study emanated from the researcher’s experience and involvement in clinical nursing and nursing management. The researcher noted how heavy losses of recruited professional nurses might have had an influence on the quality of service delivery. It is a costly and time-consuming task to recruit enough nurses into the profession and retention of staff is especially difficult. There had been a significant increase in the number of professional nurses leaving the district hospitals either to primary health care service, private hospitals or other countries. Before the commencement of the study the turnover rate at the district hospital where the study was conducted, almost doubled the accepted norm, which was ten percent of the staff. For those reasons the researcher decided to conduct a study named, “Accelerated staff turnover among professional nurses at a district hospital.” The constant heavy losses of qualified nurses from the profession constitute one of the serious challenges for nursing managers. The researcher wanted answers to the following question: “What were your experiences of your job as a professional nurse at the district hospital?” The objectives of the study were: · to explore and describe factors leading to high staff turnover of professional nurses at a district hospital · to develop guidelines to help retain professional nurses. The design of this study, which was conducted in one of the district hospitals in the Makana Local Service Area in the Eastern Cape, is qualitative, descriptive and contextual. Informed permission for conducting the research was obtained from relevant authorities and participants were asked to sign a consent form before the researcher proceeded with the study. Participants that met the selection criteria were selected by means of purposive sampling. Data was obtained by means of semi-structured telephonic interviews that were audio-taped and later transcribed verbatim. To ensure trustworthiness of the study, the researcher applied the four strategies as proposed by Lincoln and Guba (De Vos, 2002:351) namely, credibility, transferability, dependability and confirmability. Collected data was analysed according to the descriptive method proposed by Tesch (in Creswell, 1994:154). The services of an independent coder, who was provided with transcripts and a protocol to guide data analysis, were utilised. A consensus meeting was held between the researcher and the independent coder to discuss the identified themes and sub-themes. Following the data analysis, a literature control was undertaken to highlight the similarities to and differences in comparison between this and previous studies. Four major themes and sub-themes were identified through analysis.
- Full Text:
- Date Issued: 2007
An investigation into the introduction of process analytical technology, using near infrared analysis, to selected pharmaceutical processes
- Authors: Naicker, Krishnaveni
- Date: 2007
- Subjects: Near infrared spectroscopy , Pharmaceutical chemistry
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:10153 , http://hdl.handle.net/10948/577 , http://hdl.handle.net/10948/d1011710 , Near infrared spectroscopy , Pharmaceutical chemistry
- Description: Introduction: Process analytical technologies are systems for the analysis and control of manufacturing processes to assure acceptable end-product quality. This is achieved by timely measurements of critical parameters and performance attributes of raw material and in-process material and processes. The introduction of process analytical technology using near infrared analysis was investigated in three areas, namely incoming raw material analysis, blend uniformity analysis and moisture determination in the fluid bed dryer. Methodology: Incoming raw material identification - The FOSS XDS rapid content analyzer was used for the development of a NIR method for the identification and material qualification of starch maize and lactose monohydrate. Blend uniformity analysis – The SP15 Laboratory Blender fitted with near infrared probe was utilized for the study. Two types of blend experiments were designed to monitor the distribution of magnesium stearate (lubricant) in the blend, namely, a powder blend utilizing lactose monohydrate and a granule blend utilizing Ridaq® granule. Software methods were developed to monitor the standard deviation of the absorbance at the wavelengths that were specific for lactose monohydrate, Ridaq® granule and magnesium stearate. To confirm the prediction of end-point using near infrared, results were verified using an atomic absorption method for magnesium stearate. The blends were sampled at the selected time intervals corresponding to three states of the blend, namely, before end-point, at end-point and after end-point using a sampling plan. An additional six blends were conducted for the granule blend and sampled when the standard deviation had reached a value below 3 x 10-6 at the magnesium stearate wavelength at four consecutive data points (standard deviation value extrapolated from blends carried out to predetermined time intervals). Moisture determination in the fluid bed dryer – Moisture values for two products (Product A and Product B) were retrospectively collected from past production batches. A process capability study was conducted on the moisture values to determine if the current process was in a state of control. Results and Discussion: Incoming raw material identification – The algorithms used for the spectral library were able to distinguish between the raw materials selected. The spectral library positively identified the starch maize and lactose monohydrate samples that were not present in the library. The negative challenge with pregelatinised starch and tablettose demonstrated that the spectral library was able to differentiate between closely related compounds. Blend uniformity analysis – Blends sampled at the predetermined time intervals demonstrated a homogeneous state when the standard deviation of the absorbance was low and a non-homogeneous state when the standard deviation of the absorbance was high, thus near infrared prediction on the state of the blend was confirmed by the standard analytical methods. The series of Ridaq® granule and magnesium stearate blends sampled when the standard deviation was below 3 x 10-6 were homogeneous with the exception of one blend that was marginally out of specification. Blend durations were significantly lower than the standard blend durations used in the facility and ranged from 112 to 198 seconds. Moisture determination in the fluid bed dryer – From the process capability study of the two products it was noted that Product A is stable but can still be optimized while Product B is at a desirable state. The statistical evaluation of the moisture values for Product A and Product B demonstrated that the use of the product temperature to monitor the moisture gave consistent results. The current process is stable and capable of producing repeatable results although near infrared provides a means for continuously monitoring the product moisture and allows one to take action to prevent over-drying or under-drying. Conclusion: From the investigations conducted, it can be seen that there is definitely a niche for process analytical technology at this pharmaceutical company. The implementation is a gradual process of change, which may take time, probably several years (Heinze & Hansen 2005).
- Full Text:
- Date Issued: 2007
- Authors: Naicker, Krishnaveni
- Date: 2007
- Subjects: Near infrared spectroscopy , Pharmaceutical chemistry
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:10153 , http://hdl.handle.net/10948/577 , http://hdl.handle.net/10948/d1011710 , Near infrared spectroscopy , Pharmaceutical chemistry
- Description: Introduction: Process analytical technologies are systems for the analysis and control of manufacturing processes to assure acceptable end-product quality. This is achieved by timely measurements of critical parameters and performance attributes of raw material and in-process material and processes. The introduction of process analytical technology using near infrared analysis was investigated in three areas, namely incoming raw material analysis, blend uniformity analysis and moisture determination in the fluid bed dryer. Methodology: Incoming raw material identification - The FOSS XDS rapid content analyzer was used for the development of a NIR method for the identification and material qualification of starch maize and lactose monohydrate. Blend uniformity analysis – The SP15 Laboratory Blender fitted with near infrared probe was utilized for the study. Two types of blend experiments were designed to monitor the distribution of magnesium stearate (lubricant) in the blend, namely, a powder blend utilizing lactose monohydrate and a granule blend utilizing Ridaq® granule. Software methods were developed to monitor the standard deviation of the absorbance at the wavelengths that were specific for lactose monohydrate, Ridaq® granule and magnesium stearate. To confirm the prediction of end-point using near infrared, results were verified using an atomic absorption method for magnesium stearate. The blends were sampled at the selected time intervals corresponding to three states of the blend, namely, before end-point, at end-point and after end-point using a sampling plan. An additional six blends were conducted for the granule blend and sampled when the standard deviation had reached a value below 3 x 10-6 at the magnesium stearate wavelength at four consecutive data points (standard deviation value extrapolated from blends carried out to predetermined time intervals). Moisture determination in the fluid bed dryer – Moisture values for two products (Product A and Product B) were retrospectively collected from past production batches. A process capability study was conducted on the moisture values to determine if the current process was in a state of control. Results and Discussion: Incoming raw material identification – The algorithms used for the spectral library were able to distinguish between the raw materials selected. The spectral library positively identified the starch maize and lactose monohydrate samples that were not present in the library. The negative challenge with pregelatinised starch and tablettose demonstrated that the spectral library was able to differentiate between closely related compounds. Blend uniformity analysis – Blends sampled at the predetermined time intervals demonstrated a homogeneous state when the standard deviation of the absorbance was low and a non-homogeneous state when the standard deviation of the absorbance was high, thus near infrared prediction on the state of the blend was confirmed by the standard analytical methods. The series of Ridaq® granule and magnesium stearate blends sampled when the standard deviation was below 3 x 10-6 were homogeneous with the exception of one blend that was marginally out of specification. Blend durations were significantly lower than the standard blend durations used in the facility and ranged from 112 to 198 seconds. Moisture determination in the fluid bed dryer – From the process capability study of the two products it was noted that Product A is stable but can still be optimized while Product B is at a desirable state. The statistical evaluation of the moisture values for Product A and Product B demonstrated that the use of the product temperature to monitor the moisture gave consistent results. The current process is stable and capable of producing repeatable results although near infrared provides a means for continuously monitoring the product moisture and allows one to take action to prevent over-drying or under-drying. Conclusion: From the investigations conducted, it can be seen that there is definitely a niche for process analytical technology at this pharmaceutical company. The implementation is a gradual process of change, which may take time, probably several years (Heinze & Hansen 2005).
- Full Text:
- Date Issued: 2007
An investigation of indoor air quality assessment in office buildings
- Janse van Rensburg, Francois
- Authors: Janse van Rensburg, Francois
- Date: 2007
- Subjects: Indoor air pollution , Air quality management , Air quality -- Measurement
- Language: English
- Type: Thesis , Masters , MTech
- Identifier: vital:10824 , http://hdl.handle.net/10948/32 , Indoor air pollution , Air quality management , Air quality -- Measurement
- Description: Over the last several years studies have shown that the quality of indoor air may be worse than outdoor air. People spend as much as 90% of their time indoors, therefor, the associated health risk due to indoor air pollution may be greater than the risk due to outdoor air pollution. Building designs have altered dramatically over the last two decades resulted in "tighter" buildings that rely on sophisticated mechanical systems to provide for the quantity of air required throughout the building. These changes over the years could result in an increased number of complaints received regarding Sick Building Syndrome symptoms. The World Health Organization (WHO) estimates that up to 30% of office buildings world-wide may have significant problems regarding poor indoor air quality (IAQ). This study involves a literature study of the major indoor air pollutants regarding the source of the pollutant, the associated health effects, the measuring techniques available and the results of previous studies conducted on the specific pollutant. Measurements will be taken in two sealed buildings, one an old and the other a new building to identify the major pollutants. A questionnaire was compiled specifically for building occupants and completed by the occupants of both buildings. From the results obtained a step-by-step method for solving indoor air quality (IAQ) problems was proposed. The method was applied and evaluated in a case study of a problem building where indoor air quality related problems were experienced. The results of the study revealed that the major indoor air pollutants are present in old as well as new buildings. The study also revealed that some office workers might be more susceptible than others to the medical reactions cause to human beings by these pollutants. Some concentrations are higher in new buildings than in old buildings. The responses from the questionnaire was evaluated against the results obtained from the measurement study. The step-by-step method in the case study provided a more systematic approach at solving IAQ problems at buildings. Solving indoor air quality problems is a very practical issue and does not necessarily require an investment of expensive high technology equipment, but might merely require a practical approach. Environmental Health Officers can play a major role in providing expert advice when scrutinizing building plans. Environmental Health Officers should empower themselves with the knowledge to do inspections or investigations in office buildings by using the step-by-step method for investigating indoor air quality problems. By addressing indoor air quality problems in buildings, the workers in healthy buildings can increase their productivity with lasting effects on a company’s bottom line.
- Full Text:
- Date Issued: 2007
- Authors: Janse van Rensburg, Francois
- Date: 2007
- Subjects: Indoor air pollution , Air quality management , Air quality -- Measurement
- Language: English
- Type: Thesis , Masters , MTech
- Identifier: vital:10824 , http://hdl.handle.net/10948/32 , Indoor air pollution , Air quality management , Air quality -- Measurement
- Description: Over the last several years studies have shown that the quality of indoor air may be worse than outdoor air. People spend as much as 90% of their time indoors, therefor, the associated health risk due to indoor air pollution may be greater than the risk due to outdoor air pollution. Building designs have altered dramatically over the last two decades resulted in "tighter" buildings that rely on sophisticated mechanical systems to provide for the quantity of air required throughout the building. These changes over the years could result in an increased number of complaints received regarding Sick Building Syndrome symptoms. The World Health Organization (WHO) estimates that up to 30% of office buildings world-wide may have significant problems regarding poor indoor air quality (IAQ). This study involves a literature study of the major indoor air pollutants regarding the source of the pollutant, the associated health effects, the measuring techniques available and the results of previous studies conducted on the specific pollutant. Measurements will be taken in two sealed buildings, one an old and the other a new building to identify the major pollutants. A questionnaire was compiled specifically for building occupants and completed by the occupants of both buildings. From the results obtained a step-by-step method for solving indoor air quality (IAQ) problems was proposed. The method was applied and evaluated in a case study of a problem building where indoor air quality related problems were experienced. The results of the study revealed that the major indoor air pollutants are present in old as well as new buildings. The study also revealed that some office workers might be more susceptible than others to the medical reactions cause to human beings by these pollutants. Some concentrations are higher in new buildings than in old buildings. The responses from the questionnaire was evaluated against the results obtained from the measurement study. The step-by-step method in the case study provided a more systematic approach at solving IAQ problems at buildings. Solving indoor air quality problems is a very practical issue and does not necessarily require an investment of expensive high technology equipment, but might merely require a practical approach. Environmental Health Officers can play a major role in providing expert advice when scrutinizing building plans. Environmental Health Officers should empower themselves with the knowledge to do inspections or investigations in office buildings by using the step-by-step method for investigating indoor air quality problems. By addressing indoor air quality problems in buildings, the workers in healthy buildings can increase their productivity with lasting effects on a company’s bottom line.
- Full Text:
- Date Issued: 2007
Collaborative research with traditional African health practitioners of the Nelson Mandela Metropole : antimicrobial, anticancer and anti-diabetic activities of five medicinal plants
- Authors: Van Huyssteen, Mea
- Date: 2007
- Subjects: Medicinal plants -- South Africa -- Port Elizabeth , Healers -- South Africa -- Port Elizabeth , Anti-infective agents
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: vital:10148 , http://hdl.handle.net/10948/663 , Medicinal plants -- South Africa -- Port Elizabeth , Healers -- South Africa -- Port Elizabeth , Anti-infective agents
- Description: The promotion and development of indigenous knowledge pertaining to the traditional African healing system is one of the prime objectives set out by the South African government. Despite excellent research opportunities and funding, the biggest problem with ethnopharmacological research is a lack of interaction with indigenous communities, which tends to dilute the benefits this research has to offer these communities. The primary aim of this study was thus to promote the traditional African healing system through collaborative medicinal plant research with local traditional health practitioners. The research collaboration aimed to validate some biological activities of traditional remedies used by collaborating traditional health practitioners and ensured interactive sessions where scientific literature, research practices, findings and relevant legislation were discussed and debated. The joint development of a medicinal garden was a valuable tool in realising these goals. Aqueous and ethanol extracts of Bulbine frutescens, Ornithogalum longibracteatum, Ruta graveolens, Tarchonanthus camphoratus and Tulbaghia violacea were selected for antimicrobial, anticancer and anti-diabetic screening, because of their sustainable utilisation potential. The ethanol extract of T. violacea produced the best antimicrobial activity on Bacillus subtilis (100% growth inhibition) and Candida albicans (89% growth inhibition) at 250 μg/ml. The EC50 for the ethanol extract of T. violacea against HT29 colon cancer cells was 101 μg/ml. The aqueous extracts of B. frutescens and T. camphoratus (0.5 and 50 μg/ml) produced the highest overall glucose uptake activity in Chang liver and C2C12 muscle cells. T. camphoratus was unanimously chosen by participating practitioners as the plant to be investigated further. The aqueous extract of T. camphoratus increased glucose uptake in C2C12 muscle cells through increased translocation of GLUT4 to the plasma membrane and activation of the PI3-kinase and AMP-kinase pathways. It produced some alpha-glucosidase inhibitory activity at concentrations of ≥ 200 μg/ml. Apart from interactive feedback seminars at which the findings were presented to participating practitioners, all scientific literature regarding the plants was summarised, translated, compiled and given to participating practitioners in written format. An indigenous knowledge agreement has been negotiated and will formalise the collaboration in future. It is recommended that future research focuses on plants with economic development potential that can be cultivated in the medicinal garden.
- Full Text:
- Date Issued: 2007
- Authors: Van Huyssteen, Mea
- Date: 2007
- Subjects: Medicinal plants -- South Africa -- Port Elizabeth , Healers -- South Africa -- Port Elizabeth , Anti-infective agents
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: vital:10148 , http://hdl.handle.net/10948/663 , Medicinal plants -- South Africa -- Port Elizabeth , Healers -- South Africa -- Port Elizabeth , Anti-infective agents
- Description: The promotion and development of indigenous knowledge pertaining to the traditional African healing system is one of the prime objectives set out by the South African government. Despite excellent research opportunities and funding, the biggest problem with ethnopharmacological research is a lack of interaction with indigenous communities, which tends to dilute the benefits this research has to offer these communities. The primary aim of this study was thus to promote the traditional African healing system through collaborative medicinal plant research with local traditional health practitioners. The research collaboration aimed to validate some biological activities of traditional remedies used by collaborating traditional health practitioners and ensured interactive sessions where scientific literature, research practices, findings and relevant legislation were discussed and debated. The joint development of a medicinal garden was a valuable tool in realising these goals. Aqueous and ethanol extracts of Bulbine frutescens, Ornithogalum longibracteatum, Ruta graveolens, Tarchonanthus camphoratus and Tulbaghia violacea were selected for antimicrobial, anticancer and anti-diabetic screening, because of their sustainable utilisation potential. The ethanol extract of T. violacea produced the best antimicrobial activity on Bacillus subtilis (100% growth inhibition) and Candida albicans (89% growth inhibition) at 250 μg/ml. The EC50 for the ethanol extract of T. violacea against HT29 colon cancer cells was 101 μg/ml. The aqueous extracts of B. frutescens and T. camphoratus (0.5 and 50 μg/ml) produced the highest overall glucose uptake activity in Chang liver and C2C12 muscle cells. T. camphoratus was unanimously chosen by participating practitioners as the plant to be investigated further. The aqueous extract of T. camphoratus increased glucose uptake in C2C12 muscle cells through increased translocation of GLUT4 to the plasma membrane and activation of the PI3-kinase and AMP-kinase pathways. It produced some alpha-glucosidase inhibitory activity at concentrations of ≥ 200 μg/ml. Apart from interactive feedback seminars at which the findings were presented to participating practitioners, all scientific literature regarding the plants was summarised, translated, compiled and given to participating practitioners in written format. An indigenous knowledge agreement has been negotiated and will formalise the collaboration in future. It is recommended that future research focuses on plants with economic development potential that can be cultivated in the medicinal garden.
- Full Text:
- Date Issued: 2007
Cultural values and leadership styles of middle level managers in a private sector hospitals in the Eastern Cape
- Authors: Boguslavsky, Marianna
- Date: 2007
- Subjects: Hospitals, Proprietary -- South Africa -- Eastern Cape , Leadership -- South Africa -- Eastern Cape , Middle managers -- South Africa -- Eastern Cape , Corporate culture -- South Africa -- Eastern Cape
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:10080 , http://hdl.handle.net/10948/478 , http://hdl.handle.net/10948/d1011927 , Hospitals, Proprietary -- South Africa -- Eastern Cape , Leadership -- South Africa -- Eastern Cape , Middle managers -- South Africa -- Eastern Cape , Corporate culture -- South Africa -- Eastern Cape
- Description: In recent years, South Africa has seen increasing cultural diversification with regard to the appointment of managers in private healthcare facilities. However, research conducted in this area remains extremely limited. The aim of the present study was to explore and describe cultural values and leadership styles of middle managers at a private sector hospital in the Eastern Cape. Hofstede’s (1980, a ) model of cultural values served as a theoretical framework to conceptualise this study. The study was qualitative in nature and made use of in-depth research interviews conducted with a diverse sample of middle managers. The researcher made use of homogeneous and convenience sampling and utilised five participants. The qualitative data was analysed using Tesch’s (1990, in De Vos, 2002) method of analysis. Results revealed that despite the differences in personal culture, most of the managers are similar in their leadership styles and are also affected by the organizational culture. The results of the study contribute to a better understanding of the influence of cultural values and leadership styles in South Africa and will thereby benefit health institutions in their dealings with their modern day multi-cultural management staff.
- Full Text:
- Date Issued: 2007
- Authors: Boguslavsky, Marianna
- Date: 2007
- Subjects: Hospitals, Proprietary -- South Africa -- Eastern Cape , Leadership -- South Africa -- Eastern Cape , Middle managers -- South Africa -- Eastern Cape , Corporate culture -- South Africa -- Eastern Cape
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:10080 , http://hdl.handle.net/10948/478 , http://hdl.handle.net/10948/d1011927 , Hospitals, Proprietary -- South Africa -- Eastern Cape , Leadership -- South Africa -- Eastern Cape , Middle managers -- South Africa -- Eastern Cape , Corporate culture -- South Africa -- Eastern Cape
- Description: In recent years, South Africa has seen increasing cultural diversification with regard to the appointment of managers in private healthcare facilities. However, research conducted in this area remains extremely limited. The aim of the present study was to explore and describe cultural values and leadership styles of middle managers at a private sector hospital in the Eastern Cape. Hofstede’s (1980, a ) model of cultural values served as a theoretical framework to conceptualise this study. The study was qualitative in nature and made use of in-depth research interviews conducted with a diverse sample of middle managers. The researcher made use of homogeneous and convenience sampling and utilised five participants. The qualitative data was analysed using Tesch’s (1990, in De Vos, 2002) method of analysis. Results revealed that despite the differences in personal culture, most of the managers are similar in their leadership styles and are also affected by the organizational culture. The results of the study contribute to a better understanding of the influence of cultural values and leadership styles in South Africa and will thereby benefit health institutions in their dealings with their modern day multi-cultural management staff.
- Full Text:
- Date Issued: 2007
Depressive disorders and chronic comorbid disease states: a pharmacoepidemiological evaluation
- Authors: Kritiotis, Lia Costas
- Date: 2007
- Subjects: Depression, Mental , Child psychopathology , Adolescent psychopathology
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:10151 , http://hdl.handle.net/10948/653 , Depression, Mental , Child psychopathology , Adolescent psychopathology
- Description: The treatment of Depressive Disorders in patients with chronic comorbid disease states warrants careful consideration of the risk-benefit ratio pertaining to the pharmacokinetic and pharmacodynamic characteristics of the antidepressant being considered, against the physiological susceptibilities of the patient; potential drug-drug interactions and depressive symptoms. The primary aim of this study was to investigate the relationship between Depressive Disorders and the most frequently diagnosed chronic comorbid disease states in a depressed South African study population; and to comment on the appropriateness of antidepressants prescribed to these patients. This retrospective drug utilisation study consisted of two parts: the first part focused on the prevalence of the most frequently diagnosed chronic comorbidities in a depressed South African population (N = 21 171). The three most prevalent chronic comorbid disease states were Hypertension (52.87 percent), Lipid Disorders (20.40 percent) and Arthritis (16.70 percent). The second part of the study included an assessment of the antidepressants prescribed to depressed patients in 2004 (N = 6 150). Emphasis was placed on the suitability of antidepressants selected for depressed adult patients (18 years of age and older) with comorbid Hypertension, Lipid Disorders or Arthritis. SSRIs were prescribed most frequently to the depressed patients during 2004 (59.67 percent). SSRIs are the suggested first-line treatments for depressed patients with multiple chronic comorbid disease states. However, of the SSRIs, fluoxetine has the least favourable pharmacokinetic profile and was found to be the antidepressant prescribed most often. Amitriptyline, which was the TCA prescribed most frequently, produces the greatest degree of anticholinergic, sedative and hypotensive effects, relative to other agents in the same antidepressant class. Thus, it is not recommended as a first-line antidepressant, especially in depressed patients with comorbidities. This study identifies potential areas of intervention regarding antidepressant prescribing in depressed individuals with chronic comorbid disease states and offers recommendations to promote the selection of optimal, individualised drug treatment strategies for these patients.
- Full Text:
- Date Issued: 2007
- Authors: Kritiotis, Lia Costas
- Date: 2007
- Subjects: Depression, Mental , Child psychopathology , Adolescent psychopathology
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:10151 , http://hdl.handle.net/10948/653 , Depression, Mental , Child psychopathology , Adolescent psychopathology
- Description: The treatment of Depressive Disorders in patients with chronic comorbid disease states warrants careful consideration of the risk-benefit ratio pertaining to the pharmacokinetic and pharmacodynamic characteristics of the antidepressant being considered, against the physiological susceptibilities of the patient; potential drug-drug interactions and depressive symptoms. The primary aim of this study was to investigate the relationship between Depressive Disorders and the most frequently diagnosed chronic comorbid disease states in a depressed South African study population; and to comment on the appropriateness of antidepressants prescribed to these patients. This retrospective drug utilisation study consisted of two parts: the first part focused on the prevalence of the most frequently diagnosed chronic comorbidities in a depressed South African population (N = 21 171). The three most prevalent chronic comorbid disease states were Hypertension (52.87 percent), Lipid Disorders (20.40 percent) and Arthritis (16.70 percent). The second part of the study included an assessment of the antidepressants prescribed to depressed patients in 2004 (N = 6 150). Emphasis was placed on the suitability of antidepressants selected for depressed adult patients (18 years of age and older) with comorbid Hypertension, Lipid Disorders or Arthritis. SSRIs were prescribed most frequently to the depressed patients during 2004 (59.67 percent). SSRIs are the suggested first-line treatments for depressed patients with multiple chronic comorbid disease states. However, of the SSRIs, fluoxetine has the least favourable pharmacokinetic profile and was found to be the antidepressant prescribed most often. Amitriptyline, which was the TCA prescribed most frequently, produces the greatest degree of anticholinergic, sedative and hypotensive effects, relative to other agents in the same antidepressant class. Thus, it is not recommended as a first-line antidepressant, especially in depressed patients with comorbidities. This study identifies potential areas of intervention regarding antidepressant prescribing in depressed individuals with chronic comorbid disease states and offers recommendations to promote the selection of optimal, individualised drug treatment strategies for these patients.
- Full Text:
- Date Issued: 2007
Development of an antiretroviral solid dosage form using multivariate analysis
- Authors: Nqabeni, Luxolo
- Date: 2007
- Subjects: Analysis of variance , Experimental design , Multivariate analysis , Antiretroviral agents -- South Africa
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:10145 , http://hdl.handle.net/10948/705 , Analysis of variance , Experimental design , Multivariate analysis , Antiretroviral agents -- South Africa
- Description: The aim of pharmaceutical development is to design a quality product and the manufacturing process to deliver the product in a reproducible manner. The development of a new and generic formulation is based on a large number of experiments. Statistics provides many tools for studying the conditions of formulations and processes and enables us to optimize the same while being able to minimize our experimentation. The purpose of this study was to apply experimental design methodology (DOE) and multivariate analysis to the development and optimization of tablet formulations containing 150 mg lamivudine manufactured by direct compression.
- Full Text:
- Date Issued: 2007
- Authors: Nqabeni, Luxolo
- Date: 2007
- Subjects: Analysis of variance , Experimental design , Multivariate analysis , Antiretroviral agents -- South Africa
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:10145 , http://hdl.handle.net/10948/705 , Analysis of variance , Experimental design , Multivariate analysis , Antiretroviral agents -- South Africa
- Description: The aim of pharmaceutical development is to design a quality product and the manufacturing process to deliver the product in a reproducible manner. The development of a new and generic formulation is based on a large number of experiments. Statistics provides many tools for studying the conditions of formulations and processes and enables us to optimize the same while being able to minimize our experimentation. The purpose of this study was to apply experimental design methodology (DOE) and multivariate analysis to the development and optimization of tablet formulations containing 150 mg lamivudine manufactured by direct compression.
- Full Text:
- Date Issued: 2007
Effectiveness of the basic antenatal care package in primary health care clinics
- Authors: Snyman, J S
- Date: 2007
- Subjects: Pregnant women -- Health and hygiene , Hospitals -- Maternity services -- South Africa -- Port Elizabeth -- Evaluation , Maternal health services
- Language: English
- Type: Thesis , Masters , MCur
- Identifier: vital:10037 , http://hdl.handle.net/10948/728 , Pregnant women -- Health and hygiene , Hospitals -- Maternity services -- South Africa -- Port Elizabeth -- Evaluation , Maternal health services
- Description: Pregnancy challenges the health care system in a unique way in that it involves at least two individuals – the woman and the fetus. The death rates of both pregnant women (maternal mortality) and newborns (perinatal mortality) are often used to indicate the quality of care the health system is providing. In terms of maternal and perinatal outcomes South Africa scores poorly compared to other upper-middle income countries (Penn-Kekana & Blaauw, 2002:14). The high stillbirth rate compared to the neonatal death rate reflects poor quality of antenatal care. Maternal and perinatal mortality is recognised as a problem and as a priority for action in the Millennium Development Goals (Thieren & Beusenberg, 2005:11). The Saving Mothers (Pattinson, 2002: 37-135) and Saving Babies (Pattinson, 2004:4-35) reports describe the causes and avoidable factors of these deaths with recommendations on how to improve care. The quality of care during the antenatal period may impact on the health of the pregnant woman and the outcome of the pregnancy, in particular on the still birth rate. In primary health care services there are many factors which may impact on and influence the quality of antenatal care. For example with the implementation of the comprehensive primary health care services package (Department of Health, 2001a:21-35) changes at clinic level resulted in a large number of primary health care professional nurses having to provide antenatal care, who previously may only have worked with one aspect of the primary health care package such as minor ailments or childcare. Because skills of midwifery or antenatal care, had not been practiced by some of these professional nurses, perhaps since completion of basic training, their level of competence has declined, and they have not been exposed to new developments in the field of midwifery. The practice of primary health care nurses is also influenced by the impact of diseases not specifically related to pregnancy like HIV/AIDS and tuberculosis. The principles of quality antenatal care are known (Chalmers et al. 2001:203) but despite the knowledge about these principles the maternal and perinatal mortality remains high. The Basic Antenatal Care quality improvement package is designed to assist clinical management and decision making in antenatal care. The implementation of the BANC package may influence the quality of antenatal care positively, which in turn may impact on the outcome of pregnancy for the mother and her baby. The aim of this study was to evaluate the effectiveness of the Basic antenatal care (BANC) package to improve the quality of antenatal care at primary health care clinics.
- Full Text:
- Date Issued: 2007
- Authors: Snyman, J S
- Date: 2007
- Subjects: Pregnant women -- Health and hygiene , Hospitals -- Maternity services -- South Africa -- Port Elizabeth -- Evaluation , Maternal health services
- Language: English
- Type: Thesis , Masters , MCur
- Identifier: vital:10037 , http://hdl.handle.net/10948/728 , Pregnant women -- Health and hygiene , Hospitals -- Maternity services -- South Africa -- Port Elizabeth -- Evaluation , Maternal health services
- Description: Pregnancy challenges the health care system in a unique way in that it involves at least two individuals – the woman and the fetus. The death rates of both pregnant women (maternal mortality) and newborns (perinatal mortality) are often used to indicate the quality of care the health system is providing. In terms of maternal and perinatal outcomes South Africa scores poorly compared to other upper-middle income countries (Penn-Kekana & Blaauw, 2002:14). The high stillbirth rate compared to the neonatal death rate reflects poor quality of antenatal care. Maternal and perinatal mortality is recognised as a problem and as a priority for action in the Millennium Development Goals (Thieren & Beusenberg, 2005:11). The Saving Mothers (Pattinson, 2002: 37-135) and Saving Babies (Pattinson, 2004:4-35) reports describe the causes and avoidable factors of these deaths with recommendations on how to improve care. The quality of care during the antenatal period may impact on the health of the pregnant woman and the outcome of the pregnancy, in particular on the still birth rate. In primary health care services there are many factors which may impact on and influence the quality of antenatal care. For example with the implementation of the comprehensive primary health care services package (Department of Health, 2001a:21-35) changes at clinic level resulted in a large number of primary health care professional nurses having to provide antenatal care, who previously may only have worked with one aspect of the primary health care package such as minor ailments or childcare. Because skills of midwifery or antenatal care, had not been practiced by some of these professional nurses, perhaps since completion of basic training, their level of competence has declined, and they have not been exposed to new developments in the field of midwifery. The practice of primary health care nurses is also influenced by the impact of diseases not specifically related to pregnancy like HIV/AIDS and tuberculosis. The principles of quality antenatal care are known (Chalmers et al. 2001:203) but despite the knowledge about these principles the maternal and perinatal mortality remains high. The Basic Antenatal Care quality improvement package is designed to assist clinical management and decision making in antenatal care. The implementation of the BANC package may influence the quality of antenatal care positively, which in turn may impact on the outcome of pregnancy for the mother and her baby. The aim of this study was to evaluate the effectiveness of the Basic antenatal care (BANC) package to improve the quality of antenatal care at primary health care clinics.
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- Date Issued: 2007