Comparison of athletes versus nonathletes among Belgian secondary school boys aged 12 to 19.
D000293:Adolescent; D000886:Anthropometry; D001794:Blood Pressure; D001823:Body Composition; D002648:Child; D006801:Humans; D008297:Male; D009048:Motor Skills; D010101:Oxygen Consumption; D005082:Physical Exertion; D010809:Physical Fitness; D013008:Somatotypes; D013178:Sports Medicine