Crisafulli E, et al. - In subjects with COPD who had the same severity of air-flow obstruction, researchers assessed the link between the degree of dyspnea and exercise capacity. They used the modified Medical Research Council dyspnea scale questionnaire to assess dyspnea perception, and used the symptom-limited incremental cardiopulmonary exercise test to determine maximum exercise capacity. Participants included 249 ambulatory adult patients with stable COPD. A total of 160 subjects remained after propensity scoring. The investigators detected poor maximum exercise capacity in relation to a high score in dyspnea. Compared with symptoms in the combined evaluation of COPD, the severity of air-flow obstruction was found to be less informative.