Development and Validation of an Evidence-Based Home Pursed Lip Breathing Protocol for Improving Health Outcomes in Patients With Chronic Obstructive Pulmonary Disease.

In this study, we consulted patients with COPD about the 'Prepared Conditions Before PLB Practice', to ensure appropriate measures to prevent patients with COPD from potential risks. In addition, patients with COPD also contributed to the PLB exercise frequency distribution.