Journal of School Health · 2013 · 43 citations · 26 references
SES is related to physical fitness in girls but not in boys. A potential explanation for this is that boys are more likely to engage in vigorous leisure time activity regardless of SES than girls.
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Recent Trends in Waist Circumference and Waist-Height Ratio Among US Children and Adolescents
Chaoyang Li, Earl S. Ford, Ali H. Mokdad et al. · PEDIATRICS · 2006 · 493 citations