title: Smoking habits, chronic bronchitis and shortness of breath and physical fitness.
mesh_terms: D000293:Adolescent; D000328:Adult; D000367:Age Factors; D000368:Aged; D001991:Bronchitis / Q000150:complications* / Q000503:physiopathology; D002648:Child; D002908:Chronic Disease; D004417:Dyspnea / Q000150:complications* / Q000503:physiopathology; D005260:Female; D006339:Heart Rate; D006801:Humans; D008297:Male; D008875:Middle Aged; D005082:Physical Exertion; D010809:Physical Fitness; D012907:Smoking / Q000150:complications*; D013147:Spirometry