Prolonged exercise in children.
D000222:Adaptation, Physiological; D000328:Adult; D000367:Age Factors; D005080:Exercise Test; D005260:Female; D006339:Heart Rate; D006801:Humans; D008297:Male; D008660:Metabolism; D010806:Physical Education and Training; D005082:Physical Exertion; D011627:Puberty; D012119:Respiration