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아래등세모근 근력강화 운동방법들 사이의 어깨뼈 위쪽 돌림근과 다른 어깨 근육들의 근활성도 비교

Comparison of the EMG Activities of Scapular Upward Rotators and Other Scapular Muscles Among Three Lower Trapezius Strengthening Exercises

한국전문물리치료학회지 2013년 20권 3호 p.27 ~ 35
용준형, 원종혁,
소속 상세정보
용준형 ( Yong Joon-Hyoung ) - 한림성심대학교 물리치료과
원종혁 ( Won Jong-Hyuck ) - 중부대학교 물리치료학과

Abstract


The aim of this study was to compare the electromyographic (EMG) activity levels of the scapular upward rotators [upper trapezius (UT), lower trapezius (LT), and serratus anterior (SA)] and other scapular muscles [posterior deltoid (PD), levator scapulae (LS), and infraspinatus (IS)] during isometric lower trapezius exercises. Twenty males with no medical history of shoulder pain or upper extremity disorders were recruited for this study. EMG activity was recorded from the UT, LT, SA, PD, LS, and IS while subjects performed three different exercises: Prone arm lift (PAL), Backward rocking diagonal arm lift (BRDAL), Modified Prone Cobra (MPC). One-way analysis of variance (ANOVA) was used to determine any significant differences among the three exercises. A lower relative activation of UT, LT, and SA was seen with the MPC than with the other exercises (p<.05). The relatively lower activation of the UT identified, the MPC exercise as the preferred choice for preferential strengthening the LT (p<.05). However, a higher activation in the PD, LS, and IS occurred with the MPC than with the other exercises (p>.05). The recruitment pattern of synergist varied depending on the exercise posture. These findings suggest that exercise posture is an important factor in the selection of strengthening exercise for weak muscle.

키워드

Electromyography; Lower trapezius; Scapular upward rotators; Strengthening exercise

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