Effect of a Multidimensional Physical Activity Intervention on Body Mass Index, Skinfolds and Fitness in South African Children: Results from a Cluster-Randomised Controlled Trial

International Journal of Environmental Research and Public Health

Rosa du Randt¹  Danielle Smith¹  Siphesihle Nqweniso¹  Nandi Joubert¹  Larissa Adams¹  Cheryl Walter¹  Uwe Pühse²  Harald Seelig²  Katharina Endes²  Markus Gerber²  Stefanie Gall²  Peter Steinmann³  Christian Schindler³  Peiling Yap³  Nicole Probst-Hensch³  NanS. N. Htun³  Jürg Utzinger³  Ivan Müller³ 

[1] Department of Human Movement Science, South Campus, P.O. Box 77000, Nelson Mandela University, Port Elizabeth 6031, South Africa;Department of Sport, Exercise and Health, University of Basel, Birsstrasse 320 B, CH-4052 Basel, Switzerland;Swiss Tropical and Public Health Institute, P.O. Box, CH-4002 Basel, Switzerland;

关键词: body mass index;    cardiorespiratory fitness;    intestinal protozoa;    physical activity programme;    school-aged children;    soil-transmitted helminths;    South Africa;   

DOI  :  10.3390/ijerph16020232

来源: DOAJ

【 摘 要 】

Obesity-related conditions impose a considerable and growing burden on low- and middle-income countries, including South Africa. We aimed to assess the effect of twice a 10-week multidimensional, school-based physical activity intervention on children’s health in Port Elizabeth, South Africa. A cluster-randomised controlled trial was implemented from February 2015 to May 2016 in grade 4 classes in eight disadvantaged primary schools. Interventions consisted of physical education lessons, moving-to-music classes, in-class activity breaks and school infrastructure enhancement to promote physical activity. Primary outcomes included cardiorespiratory fitness, body mass index (BMI) and skinfold thickness. Explanatory variables were socioeconomic status, self-reported physical activity, stunting, anaemia and parasite infections. Complete data were available from 746 children. A significantly lower increase in the mean BMI Z-score (estimate of difference in mean change: −0.17; 95% confidence interval (CI): −0.24 to −0.09; p < 0.001) and reduced increase in the mean skinfold thickness (difference in mean change: −1.06; 95% CI: −1.83 to −0.29; p = 0.007) was observed in intervention schools. No significant group difference occurred in the mean change of cardiorespiratory fitness (p > 0.05). These findings show that a multidimensional, school-based physical activity intervention can reduce the increase in specific cardiovascular risk factors. However, a longer and more intensive intervention might be necessary to improve cardiorespiratory fitness.

【 授权许可】

Unknown