Exercise responses of smoking and non-smoking middle-aged business executives.
D000328:Adult; D000367:Age Factors; D004562:Electrocardiography; D006321:Heart / Q000503:physiopathology*; D006334:Heart Function Tests; D006801:Humans; D008297:Male; D008875:Middle Aged; D010101:Oxygen Consumption; D005082:Physical Exertion; D010809:Physical Fitness; D013902:Radiography, Thoracic; D012119:Respiration; D012129:Respiratory Function Tests; D012907:Smoking