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. 2021 Jun 1:16:1529-1534.
doi: 10.2147/COPD.S311221. eCollection 2021.

Impact of Exercise Capacity Upon Respiratory Functions, Perception of Dyspnea, and Quality of Life in Patients with Chronic Obstructive Pulmonary Disease

Wenjun Liu  1   2 , Yufei Liu  1   2 , Xiaolin Li  1   2
Affiliations

Impact of Exercise Capacity Upon Respiratory Functions, Perception of Dyspnea, and Quality of Life in Patients with Chronic Obstructive Pulmonary Disease

Wenjun Liu et al. Int J Chron Obstruct Pulmon Dis. .

Abstract

Background: Chronic obstructive pulmonary disease (COPD) is associated with a high prevalence of morbidity and mortality worldwide. We investigated the effects of exercise capacity upon respiratory functions, perception of dyspnea, and quality of life (QoL) in patients with COPD.

Methods: A total of 512 COPD patients formed the study cohort. They were divided into four subgroups according to the distance walked in the 6-minute walking test (6MWT). We compared respiratory functions, perception of dyspnea, and QoL between groups.

Results: Patients who walked >350 m had significantly better disease-specific QoL scores (p < 0.001) than those of other groups. A negative correlation was found between the walking distance and anxiety, depression, and dyspnea scores (p < 0.001).

Conclusions: In patients who walked <350 m, the reduced walking distance adversely affected respiratory functions, psychological symptoms, and QoL.

Keywords: chronic obstructive pulmonary disease; exercise; quality of life; statistics.

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Conflict of interest statement

The authors report no conflicts of interest in this work.

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