By abducting the position to 130°, the stretching involvement of the pectoralis major muscle is minimized, and the subscapularis muscle is stretched the most. *130 degrees is a guideline We examined the angle at which the subscapularis muscle is stretched without involving the pectoralis major muscle in stretching, using seven therapists with no history of shoulder joint problems. Whether or not the pectoralis major muscle is being stretched is up to the receiver. #bpt #gpt #dpt #pt #muscle #mus