抄録
Weakness of the trapezius lower muscle fibers is one of the problems of patients with shoulder joint disease. Therefore, we attempted to train the muscle activity of these muscle fibers by providing movements to the upper limbs. Stimulating these movements is often difficult for various reasons such as limited range of motion. Therefore, we attempted to increase the muscle activity of the opposite side lower trapezius muscle fibers by hip joint abduction in the prone position. In this study, we compared the muscle activities of the lower trapezius muscle fibers during two tasks. First, the upper limbs were placed with the shoulder joint abducted at 145 degrees in the prone position. Then, hip joint abduction was performed in the prone position. A significant difference was not observed between the integrated electromyogram values of the lower trapezius muscle fibers of the tow tasks. In particular, the muscle activity of trapezius lower fibers was approximately the same in shoulder joint abduction of 145 degrees in the prone position as in hip joint abduction, suggesting that hip joint abduction in the prone position is an effective method of training the lower trapezius muscle fibers that does not require upper limb movement.
