title: Chinese city children and youth physical activity study: an introduction.
authors: Shanghai University of Sport, 399 Chang Hai Road, Shanghai 200438, PR China. chenpeijie@sus.edu.cn
authors: Peijie
authors: P
authors: Chen
mesh_terms: D000293:Adolescent; D002648:Child; D002681:China; D005260:Female; D015438:Health Behavior; D006306:Health Surveys; D006801:Humans; D008297:Male; D009043:Motor Activity; D014505:Urban Population