Abstract. Purposel Fragmentary studies characteristics muscles are being done to increase respiratory capacity by classifying exercises on of respiratory symptoms and pre- in voluntary respiratory exercise which relieves vents COPD and exercise using breathing exercise equipment. But this study found ebanges what effect th through changes on the activity pattern of and synergist muscles and studied group I that can have on body function improvemen Subjects and Methods] Fifteen subjects in experimental were respiratory exercise of diaphragm subjects in experimental group II that feedback respiratory exercise inter- randomly selected among CoPD patients to find the cffective intervention method for coPD patients. And were vention program was conducted for 5 weeks, three times a week, a day and 30 minutes a session. They measured with BoDE index using respiratory muscle activity, pulmonary function There was a significant dyspnea criteria and BMI Then the results obtained were compared and analyzed. IResultsl index for body func difference in sternocleidomastoid muscle and scalene muscle and in 6-minute walk and BoDE patients iconcu- tion. Thus the group performing foedback respiratory had more cffective results for mild coPD synergists when sional Therefore, the improvement was significant regarding the activity of respiratory muscles of respiratory breathing before doing breathing exercise. Although, it is valuable to reduce too much mobilization of muscles synergists through the proper intervention it is necessary to study body function regarding improvement respiratory function for patients with COPD. Rospiratory muscle activity Keywords: Breathing exercise, Chronic obstructive pulmonary disease, (This article was submitted Oct. 13, 2015, and was accepted Oct. 30, 2015)