Theses and dissertations (Health Sciences)
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Item Impact of vitamins B12, B6 and folate supplementation on cardiovascular risk markers in an elderly community of Sharpeville(2015-09) Grobler, Christina JohannaBackground: In a vulnerable low-income group with a confirmed high risk of cardiovascular disease, like the elderly in the Sharpeville care centre, an acute intervention is needed in order to improve their health profile. Previous studies suggested homocysteine lowering by vitamin B12, B6 and folate supplementation. The effect of vitamin B12, B6 and folate supplementation on the inflammatory response, thrombotic risk, lipid profile, hypertension, risk of metabolic syndrome and homocysteine metabolism in an elderly, black South African population has never been reported. Objectives: The main aim of this interventional study was to assess the effect of vitamins B12, B6 and folate supplementation at 200% RDA for six months on cardiovascular risk markers of an elderly semi-urbanised black South African community. Design: This study was an experimental intervention non-equivalent control group study design in 104 purposively selected samples of all the elderly attending the day-care centre. Setting and participants: A homogeneous group of respondents was included in the study. All subjects were equivalent in age (>60 years), race (black), unemployed/pensioners (socio-demographic) and 60 years and older attending a day care centre in Sharpeville, situated in the Vaal region, Gauteng, SA. Measurements: The distinctiveness of this study lies in the broad panel of parameters evaluating the CVR in correlation with the increased nutritional intake of vitamin B6, B12 and folate. These included: weight, height, waist, serum cholesterol, high density lipoprotein (HDL), low-density lipoprotein (LDL), triglycerides, blood pressure, fibrinogen, high-sensitivity C-reactive protein (HS–CRP), homocysteine, vitamin B12, folate, glucose, insulin, adiponectin and fibronectin. Results: A very high incidence (66.36%) of hyperhomocysteinaemia is present in the sample. The mean serum homocysteine level in hyperhomocysteinaemic individuals decreased statistically significantly from 25.00±8.00 umol/l to 18.80±12.00 umol/l after the intervention. The number of respondents with an increased homocysteine level decreased from 100% (baseline) to 67% (follow-up). The supplementation was beneficial (statistically significant changes) to the glucose levels, fibrinolytic status, vitamin B6 serum levels, fibronectin levels and haemopoeiesis (decreased macrocytosis) of all the individuals (regardless of their homocysteine status). Conclusion: It is concluded that supplementation of vitamins B6, B12 and folate at 200% RDA for six months is an effective homocysteine-lowering approach as a strategy to reduce hyperhomocysteinaemia in an elderly population and thereby reduce cardiovascular risk (CVR). The supplementation intervention mentioned is not an effective multifactorial strategy to decrease CVR although beneficial effects were found with other CVR markers independent of homocysteine status.Item The knowledge, perception and utilisation of vitamin and mineral supplements, natural medicines and pharmacological agents as adjuncts to chiropractic practice in South Africa(2009) De Gouveia, Natalie; Wilson, Laura MaieBackground: The aim of this study was to determine the knowledge, perception and utilisation of vitamins and minerals, natural medicines and pharmacological agents as adjuncts to Chiropractic practice in South Africa. Method: This study was a population based cross sectional survey utilising a descriptive, quantitative questionnaire study design. The questionnaire was distributed to all practicing qualified Chiropractors (n=388) and masters Chiropractic students (n=102) in South Africa. Results: The results obtained (30.4% response rate), indicated that the majority of the respondents (62.8%) felt qualified to advise patients on vitamins and mineral supplements and had a positive view of the use of vitamins and minerals as part of Chiropractic patient management (86.6%). The majority of the practitioners were aware that topical substances are part of the scope of practice and males were nearly twice as likely as females to use them. The majority thought biopuncture should be available to Chiropractors (82%) and felt that Chiropractors should challenge the legislation to incorporate biopuncture as part of the scope of practice (77.5%). Most respondents agreed with the statement indicating that NSAIDS should be part of Chiropractic scope of practice and 71% of respondents felt that being able to use NSAIDS in non-emergency situations would enhance patient retention. This study revealed that amongst the student population the majority, if allowed, would consider administering pharmacological agents in practice (55.1%). Conclusion: A correlation exists between the perception, knowledge and utilisation of vitamins and minerals, natural medicines and pharmacological agents in the Chiropractic profession with respect to the demographic data and there is a significant difference in opinion between qualified Chiropractors and Chiropractic masters students regarding perception, knowledge and utilisation of these adjuncts to practice.Item The relative efficacy of Advanced Brain Food and a homeopathic complex (Quietude) in the management of Attention Deficit Hyperactivity Disorder (ADHD) in males between the ages of 8 and 13 years(2006) Lottering, John-John Brian; Naude, David F.The aim of the study was to evaluate the efficacy of a Nutritional Supplement (Advanced Brain Food®) and a homoeopathic complex (Quietude®) in the management of Attention Deficit Hyperactivity Disorder (ADHD). ADHD is primarily a childhood disorder affecting ten to twenty percent of school going children. The three main presenting features of ADHD are inattention, impulsivity, and hyperactivity. This triad often results in numerous adjustment difficulties for the child in the social and academic sectors (NIH Consensus Statement, 1998).