Immediate Effects of Manual Muscle Stretching on Respiratory Capacity, Heart Rate Variability, and Diaphragmatic Function in Patients With COPD - Hsin-Lun Yang; Jian-Cheng Peng; Yu-Ting Huang; Hui-Ching Cheng; Ching-Hsia Hung; Chiung-Zuei Chen; Sheng-Yuan Wang; Chin-Wei Kuo; Kun-Ling Tsai (Annals of Rehabilitation Medicine, 2026)