An evaluation of elementary students' voluntary physical activity during recess.
D000293:Adolescent; D000328:Adult; D002648:Child; D005069:Evaluation Studies as Topic; D005260:Female; D006801:Humans; D006937:Hypercholesterolemia / Q000517:prevention & control; D008297:Male; D009765:Obesity / Q000517:prevention & control; D005082:Physical Exertion; D010809:Physical Fitness; D012306:Risk; D013334:Students