Preliminary study: comparative effects of lung volume therapy between slow and fast deep-breathing techniques on pulmonary function, respiratory muscle strength, oxidative stress, cytokines, 6-minute walking distance, and quality of life in persons with COPD

初步研究：比较慢速深呼吸和快速深呼吸两种肺容量疗法对慢性阻塞性肺疾病患者肺功能、呼吸肌力量、氧化应激、细胞因子、6分钟步行距离和生活质量的影响