Discussion
diaphragmatic breathing stretching muscle, COPD
COPD, CONTRACTION
This study is an assessor-blinded, parallel, superiority, randomized clinical trial that evaluated the rehabilitative efficacy of PQE intervention for COPD-stable patients. The results may support our hypothesis that 3 months PQE intervention improves exercise capacity, skeletal muscle strength, and quality of life of COPD-stable patients and encourage the clinical use of PQE intervention as a safe and effective PR method in the family and community rehabilitation of COPD-stable patients.TCE is a slow, gentle, self-healing aerobic exercise, which includes multi-component characteristics of isometric contraction, deep diaphragmatic breathing stretching muscle, and relaxation, with the main purpose of strengthening the body. Several clinical studies In recent years, have shown that TCE is suitable for elderly COPD patients and has positive rehabilitation effects [Compared to conventional exercise training, TCE is easy to perform at home without any equipment or space limitations. Li et al. [Low to moderate-intensity aerobic training is effective in improving 6MWT and walking ability in COPD-stable patients [TCE has been shown to significantly improve lung function in patients with stable COPD [