Exercise intensity threshold for improvement of cardiovascular-respiratory function in older men.
D000367:Age Factors; D000368:Aged; D002320:Cardiovascular Physiological Phenomena; D005080:Exercise Test; D006339:Heart Rate; D006801:Humans; D008297:Male; D008875:Middle Aged; D010101:Oxygen Consumption; D010809:Physical Fitness; D012119:Respiration