title: Cardiovascular changes in middle-aged men during two years of training.
mesh_terms: D000328:Adult; D002320:Cardiovascular Physiological Phenomena; D006339:Heart Rate; D006439:Hemodynamics; D006801:Humans; D007773:Lactates / Q000097:blood; D008297:Male; D008875:Middle Aged; D010100:Oxygen / Q000097:blood; D005082:Physical Exertion; D010809:Physical Fitness; D011652:Pulmonary Circulation; D011674:Pulse; D012119:Respiration; D013997:Time Factors
chemical_list: D007773:Lactates; D010100:Oxygen