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      Attitudes towards nutritional supplement use amongst adult gymnasium users in Johannesburg North

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          Abstract

          BACKGROUND: Nutritional supplements refer to a product ingested to increase the nutritional content of a normal diet, to fill a dietary need and/or presumed deficiency. The usage and popularity of nutritional supplements, however, raises concerns from a health benefit and risk perspective. In South Africa, there is currently no adequate regulatory framework of enforcement for nutritional supplement products and undeclared constituents by the statutory body, the Medicines Control Council (MCC). Education awareness programmes by organisations that should take consumer protection and the general public health and wellness as a right, needs to be improved. OBJECTIVES: To investigate the attitudes toward nutritional supplements by adult gym users from commercial gymnasiums in the Johannesburg North region of South Africa. METHODS: A cross-sectional quantitative design, using a self-administered questionnaire was applied to 364 recruited study participants who attended commercial gymnasiums in Johannesburg North. RESULTS: One hundred and fifty users (41%) claimed that they 'always' read the information about the nutritional values, benefits, and side effects of the supplements on the labels prior to use. Three hundred and three users (83%) indicated that the number of users of nutritional supplements in gymnasiums is on the increase. Two hundred and seventy-three (75%) of main information sources for nutritional supplements may be found on the internet, while 292 (80%) indicated the need for gymnasiums to provide educational programmes pertaining to nutritional supplement consumption. CONCLUSION: Gymnasium users are aware of the increase in nutritional supplement use in commercial gymnasiums. Many of the users were unaware of the potential mislabelling and health concerns regarding these supplements. Therefore there is a need for improved nutritional supplement education programmes and diligence at multiple levels.

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          The social-cognitive mechanisms regulating adolescents' use of doping substances.

          In this study, we assessed the longitudinal effects of social-cognitive mechanisms on the self-reported use of doping substances and supplements among Italian high school students. In total, 1232 students completed questionnaires measuring various psychological factors hypothesized to influence students' intention to use substances. Three months later, 762 of the students completed the same questionnaires a second time and also reported their use of substances during the time between assessments. Overall, the percentages of students using doping substances (2.1%) or supplements (14.4%) were consistent with values reported in the literature. Analysis of the data showed that adolescents' intention to use doping substances increased with stronger attitudes about doping, stronger beliefs that significant others would approve of their use, a stronger conviction that doping use can be justified, and a lowered capacity to resist situational pressure or personal desires. In turn, stronger intentions and moral disengagement contributed to a greater use of doping substances during the previous 3 months. Doping use was also correlated significantly to supplementation. In conclusion, our results provide novel information about some of the psychological processes possibly regulating adolescents' use of doping substances and supplements. The results also highlight possible areas for future study and intervention, focusing on the prevention of adolescents' substance use.
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            The relationship between body image discrepancy and body mass index across ethnic groups.

            This study sought to examine at what body mass index (BMI) body image discrepancy (BD) was reported in a community sample of 389 white, Hispanic, and black women. In addition, we assessed the trajectory of the BMI-BD relationship as BMI increases by ethnic group. All participants were assessed on height and weight and completed the Figure Rating Scale. We found no difference in the proportion of women in each ethnic group reporting BD. However, white women experienced BD at a lower BMI level (BMI = 24.6), and below the criterion for overweight (BMI = 25). In contrast, black and Hispanic women did not report BD until they were overweight (BMIs of 29.2 and 28.5, respectively). Compared with black and white women, Hispanic women registered increases in BD at smaller increases in BMI. These findings could have unhealthful implications for weight control behavior. The results encourage a closer look at ethnicity and BD, and their relationship to obesity and weight control.
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              Usage patterns, health, and nutritional status of long-term multiple dietary supplement users: a cross-sectional study

              Background Dietary supplement use in the United States is prevalent and represents an important source of nutrition. However, little is known about individuals who routinely consume multiple dietary supplements. This study describes the dietary supplement usage patterns, health, and nutritional status of long-term multiple dietary supplement users, and where possible makes comparisons to non-users and multivitamin/mineral supplement users. Methods Using a cross-sectional study design, information was obtained by online questionnaires and physical examination (fasting blood, blood pressure, body weight) from a convenience sample of long-term users of multiple dietary supplements manufactured by Shaklee Corporation (Multiple Supp users, n = 278). Data for non-users (No Supp users, n = 602) and multivitamin/mineral supplement users (Single Supp users, n = 176) were obtained from the National Health and Nutrition Examination Survey (NHANES) 2001–2002 and NHANES III 1988–1994. Logistic regression methods were used to estimate odds ratios with 95% confidence intervals. Results Dietary supplements consumed on a daily basis by more than 50% of Multiple Supp users included a multivitamin/mineral, B-complex, vitamin C, carotenoids, vitamin E, calcium with vitamin D, omega-3 fatty acids, flavonoids, lecithin, alfalfa, coenzyme Q10 with resveratrol, glucosamine, and a herbal immune supplement. The majority of women also consumed gamma linolenic acid and a probiotic supplement, whereas men also consumed zinc, garlic, saw palmetto, and a soy protein supplement. Serum nutrient concentrations generally increased with increasing dietary supplement use. After adjustment for age, gender, income, education and body mass index, greater degree of supplement use was associated with more favorable concentrations of serum homocysteine, C-reactive protein, high-density lipoprotein cholesterol, and triglycerides, as well as lower risk of prevalent elevated blood pressure and diabetes. Conclusion This group of long-term multiple dietary supplement users consumed a broad array of vitamin/mineral, herbal, and condition-specific dietary supplements on a daily basis. They were more likely to have optimal concentrations of chronic disease-related biomarkers, and less likely to have suboptimal blood nutrient concentrations, elevated blood pressure, and diabetes compared to non-users and multivitamin/mineral users. These findings should be confirmed by studying the dietary supplement usage patterns, health, and nutritional status of other groups of heavy users of dietary supplements.
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                Author and article information

                Contributors
                Role: ND
                Role: ND
                Role: ND
                Journal
                sajsm
                South African Journal of Sports Medicine
                SA J. Sports Med.
                The South African Sports Medicine Association (Bloemfontein, Free State, South Africa )
                1015-5163
                2078-516X
                2017
                : 29
                : 0
                : 1-5
                Affiliations
                [03] Gauteng orgnameUniversity of Johannesburg orgdiv1Faculty of Health Science orgdiv2Department of Sport and Movement Studies South Africa
                [02] Gauteng orgnameUniversity of Johannesburg orgdiv1Faculty of Health Science orgdiv2Department of Sport and Movement Studies South Africa
                [01] Gauteng orgnameUniversity of Johannesburg orgdiv1Faculty of Health Science orgdiv2Department of Sport and Movement Studies South Africa
                Article
                S1015-51632017000100012
                10.17159/2078-516x/2017/v29i0a1387
                116af7ca-0b51-4fba-8ae2-3f897f1ec139

                This work is licensed under a Creative Commons Attribution 4.0 International License.

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                Figures: 0, Tables: 0, Equations: 0, References: 16, Pages: 5
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                SciELO South Africa


                vitamins,proteins,peer pressure,education,information sources,unregulated

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