Changes in functional and efficiency indicators between the 18th and 50th year in man.
D000293:Adolescent; D000328:Adult; D000375:Aging / Q000502:physiology*; D001823:Body Composition; D001835:Body Weight; D004526:Efficiency; D006801:Humans; D008297:Male; D008875:Middle Aged; D010101:Oxygen Consumption / Q000502:physiology; D005082:Physical Exertion; D011674:Pulse / Q000502:physiology; D012119:Respiration; D013147:Spirometry