Physical working capacity and age.
D000293:Adolescent; D000328:Adult; D000367:Age Factors; D000368:Aged; D004185:Disability Evaluation; D006801:Humans; D008297:Male; D008875:Middle Aged; D010101:Oxygen Consumption; D005082:Physical Exertion; D010809:Physical Fitness; D012865:Skiing