Belman, M J Variability of breathlessness measurement in patients with chronic obstructive pulmonary disease. [electronic resource] - Chest Mar 1991 - 566-71 p. digital Publication Type: Journal Article ISSN: 0012-3692 Standard No.: 10.1378/chest.99.3.566 doi Subjects--Topical Terms: AgedCarbon Dioxide--metabolismDyspnea--diagnosisExercise TestFemaleForced Expiratory Flow RatesForced Expiratory VolumeHumansLung Diseases, Obstructive--physiopathologyMaleMiddle AgedOxygen--bloodOxygen ConsumptionReproducibility of ResultsRespirationSpirometryVital Capacity