Progressive Muscle Relaxation and Deep Breathing Exercises

The population of the study was composed of 186 patients whose cells were assigned to Atatürk University Hospital Educational Diseases Polyclinic between April and June 2023, and whose cells were found to have COPD according to the Chronic Obstructive Pulmonary Disease Initiative by the physician. A total of 140 patients approved the inclusion criteria and agreed to participate in the study. Priori power analysis was performed for sampling determination. In the power analysis, Cohen\'s medium effect size reference method was chosen. As a result of the power analysis, it was determined that it should be done with a total of 90 patients, 30 patients in each group, two experimental groups and the control group (α=0.05, power=0.8, and effect expectation=0.65). In case of data loss, this number plus approximately 20% reserve allocation included 36 patients in each group. However, the study was completed with a total of 96 patients, including PMR(n=31), DB(n=32) and 33 control subjects.