안구의 움직임이 동반된 상지의 대각선 운동시 체간과 어깨의 근활성도에 미치는 영향

The Effect of Diagonal Movement on Upper Extremity with Eye Tracking to Muscle Activity of Trunk and Shoulder

Objective : The purpose of this study was to investigate the effect of eye tracking with diagonal movement of upper extremity to muscle activity of shoulder and upper trunk. Method : A total of 10 healthy people aged 20∼30 years participated in this study. All of them performed randomized exercises that consisted of diagonal movement of upper extremity to pull a pulley from under knee and to place over a switch with eye tracking or no eye tracking. Muscle activities of upper extremity and trunk were recorded by EMG. Results : There was significant difference on the diagonal movement of upper extremity with eye tracking (p<.05). Muscle activities of the trunk were increased both dominant side(57.18±3.57 and non dominant side (50.88±1.41). For activity of the shoulder, there was significant difference(p<.05). Muscle activities were decreased on upper trapezius (19.91±4.07) and middle trapezius(32.28±1.46). Conclusion : Diagonal movement of upper extremity with eye tracking improved proximal segmental stability and balance and decreased stress while shoulder movements. Therefore, it will be effective for patient with shoulder impingement.