title: Exercise tolerance in chronic airway obstruction.
mesh_terms: D000328:Adult; D000368:Aged; D000402:Airway Obstruction / Q000503:physiopathology; D001991:Bronchitis / Q000503:physiopathology*; D002245:Carbon Dioxide / Q000097:blood; D002908:Chronic Disease; D005080:Exercise Test; D006339:Heart Rate; D006801:Humans; D007773:Lactates / Q000097:blood; D008297:Male; D008875:Middle Aged; D010101:Oxygen Consumption; D005082:Physical Exertion; D011656:Pulmonary Emphysema / Q000503:physiopathology*; D012119:Respiration; D012907:Smoking; D013147:Spirometry; D014692:Ventilation-Perfusion Ratio
chemical_list: D007773:Lactates; D002245:Carbon Dioxide