The maximal oxygen intake of physically active boys, 8-13 years of age.
D000293:Adolescent; D000367:Age Factors; D001835:Body Weight; D002648:Child; D006801:Humans; D008297:Male; D010101:Oxygen Consumption; D005082:Physical Exertion; D012572:School Health Services; D013019:South Africa; D013178:Sports Medicine; D014797:Vital Capacity