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Influence of socioeconomic status on changes in body size and physical activity in ageing black South African women
Authors:Philippe Jean-Luc Gradidge  Shane A. Norris  Richard Munthali  Nigel J. Crowther
Affiliation:1.Centre for Exercise Science and Sports Medicine, Faculty of Health Sciences,University of the Witwatersrand,Johannesburg,South Africa;2.MRC/Wits Developmental Pathways for Health Research Unit, Faculty of Health Sciences,University of the Witwatersrand,Johannesburg,South Africa;3.Department of Chemical Pathology, National Health Laboratory Service, Faculty of Health Sciences,University of the Witwatersrand,Johannesburg,South Africa
Abstract:

Background

The increasing prevalence of obesity in sub-Saharan African women is not well understood, and black South African women in the region are particularly vulnerable. This study aimed to examine whether the relationship of socioeconomic status (SES) with changes in body mass index (BMI) and waist circumference (WC) is mediated by physical activity in ageing African women.

Methods

In a longitudinal analysis of the 518 caregivers associated with the Birth to Twenty Plus study, the role of SES associated with 10-year changes in BMI and WC was tested using structural equation modelling (SEM). The degree of mediation of moderate-vigorous physical activity (MVPA) and sitting time in this association was also assessed.

Results

The prevalence of obesity increased significantly from baseline to follow-up (p?

Conclusions

Our study demonstrates the role and interaction of sociodemographic and behavioural predictors of obesity, and suggests a multifaceted approach to management of the crisis in communities of ageing urban African women.
Keywords:
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