title: The aerobic capacity of trained athletes from 6 to 7 years of age on.
mesh_terms: D000293:Adolescent; D000367:Age Factors; D002648:Child; D005260:Female; D005860:Germany, West; D006339:Heart Rate; D006801:Humans; D008297:Male; D010101:Oxygen Consumption; D012737:Sex Factors; D013177:Sports; D013178:Sports Medicine; D013550:Swimming