Discussion
dyspnea, COPD
COPD, DISEASE, DISEASE PROGRESSION
To the best of our knowledge, this is the first study to evaluate the effect of a PA program based on BCW theory on PA levels, sedentary time, dyspnea, exercise capacity, lung function and HRQoL among patients with COPD. The results showed that, compared to the control group, the PA of patients in the experimental group increased significantly and the sedentary time decreased after 12 weeks of intervention. The program increased the patient's exercise capacity and self-efficacy, and improved the patient's health-related quality of life. Due to the limited intervention time in this study, the pulmonary function of COPD patients may not be reversed in a short time, and the long-term effect of this program on the pulmonary function of patients needs to be further explored.PA and prolonged sitting are strongly associated with increased all-cause mortality in patients with COPDLung function is of great significance for monitoring disease progression in COPD patients. FEV1/FVC is a sensitive index to evaluate airflow limitation. Due to the complexity and long duration of COPD, lung function is impaired to varying degrees, leading to dyspnea and decreased exercise toleranceShortness of breath is one of the most common symptoms of COPD patients and a major predictor of hospitalization and mortalityThe 6MWT is an important marker of disease severity in patients with COPD, which has been shown to be related to lung function and HRQoL and can predict patient mortalityLow exercise self-efficacy in COPD patients was associated with low PA, self-reported health status, and exercise ability. The results of this study showed that there were statistically significant differences in the group effect, time effect and interaction effect of exercise self-efficacy between the two groups (