[Study of the normal 50-year-old man during muscular effort].
D000368:Aged; D000369:Aged, 80 and over; D002319:Cardiovascular System; D019069:Cell Respiration; D006801:Humans; D008297:Male; D009132:Muscles; D005082:Physical Exertion; D012119:Respiration
CARDIOVASCULAR SYSTEM/in old age; EXERTION/in old age; RESPIRATION/in old age