Browsing Faculty of Health Sciences by Author "Steyn, H.S."
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Association of waist circumference with perception of own health in urban African males and females: the Sympathetic Activity and Ambulatory Blood Pressure in Africans (SABPA) study
Botha, J.; Malan, L.; Potgieter, J.C.; Steyn, H.S.; De Ridder, J.H. (Taylor & Francis, 2012)Background: Current waist circumference (WC) cut-points of the Joint Statement Consensus (JSC) (male ≥ 94 cm, female ≥ 80 cm) were compared with a recently proposed WC cut-point (RPWC) (male ≥ 90 cm, female ≥ 98 cm). In ... -
Attenuated NOx responses and myocardial ischemia, a possible risk for structural vascular disease in African men: the SABPA study
Uys, A.S.; Malan, L.; Van Rooyen, J.M.; Steyn, H.S.; Reimann, M. (Nature Publishing Group, 2014)Chronically elevated blood pressure has been associated with impaired NO-mediated vasodilation and structural vascular disease risk. This study aimed to determine whether significant associations exist regarding NO metabolite ... -
Change over three years in adolescents’ physical activity levels and patterns after a physical activity intervention: play study
Pienaar, A.E.; Kruger, Salome; Steyn, H.S.; Naudé, D. (Edizioni Minerva Medica, 2012)AIM: This study aimed to determine over a three-year period what the PA levels and patterns of adolescents will be after participating in a physical activity (PA) intervention. METHODS: African adolescents (158 boys, 211 ... -
Cultural coping as a risk for depression and hypertension: the SABPA prospective study
Le Roux, S.; Lotter, G.A.; Steyn, H.S.; Malan, L. (Clinics Cardive, 2018)Objectives: In past studies, a lack of social support has been associated with cardiovascular disease (CVD) risk, particularly in black Africans. However, whether or not coping strategies have beneficial effects on blood ... -
Estimating an effect size in one-way multivariate analysis of variance (MANOVA)
Steyn, H.S.; Ellis, S.M. (Taylor & Francis, 2009)When two or more univariate population means are compared, the proportion of variation in the dependent variable accounted for by population group membership is eta-squared. This effect size can be generalized by using ... -
Reproducibility of two, three, four and five 24-hour recalls in peri-urban African adolescents in the North West province
Rankin, D.; Hanekom, S.M.; Steyn, H.S.; Wright, H.H.; MacIntyre, U.E. (MedPharm Publications, 2012)Background: The objective was to determine the reproducibility of two, three, four and five repeated 24-hour recalls among peri-urban African adolescents. Method: A prospective study design was used within the multidisciplinary ... -
Structural vascular disease in Africans: performance of ethnic-specific waist circumference cut points using logistic regression and neural network analyses: the SABPA study
Botha, J.; De Ridder, J.H.; Potgieter, J.C.; Steyn, H.S.; Malan, L. (Thieme, 2013)A recently proposed model for waist circumference cut points (RPWC), driven by increased blood pressure, was demonstrated in an African population. We therefore aimed to validate the RPWC by comparing the RPWC and the Joint ...