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슬관절 신전근과 굴곡근의 근력 및 근활성도에 대한 편측 하지의 교차 및 동일 안정화 노력의 효과 비교
박우주(Park Woo-Joo),오덕원(Oh Duck-Won),권정두(Kwon Jung-Du),김병완(Kim Byeong-Wan),김창환(Kim Chang-Whan) 한국체육과학회 2011 한국체육과학회지 Vol.20 No.2
??This study aimed to compare the effect of reciprocal and concurrent stabilization efforts on the strength and muscle activity of the knee extensor and flexor. Twenty-four healthy subjects performed maximally isometric extension and flexion exercises by performing reciprocal and concurrent movements of the legs at 3 knee angles (15°, 45°, and 75°). The Strength and muscle activity of the knee extensor and flexor during the reciprocal movement tended to be significantly higher than those during the concurrent movement(p<.05). In addition, the strength and muscle activity of the knee extensor significantly increased at an angle of 75° and at a flexion angle of 15°, regardless of the reciprocal or concurrent movements of the opposite leg. These findings indicate that reciprocal stabilization exercises are helpful in increasing the effectiveness of strengthening exercises of the knee muscles; the effectiveness of these exercise may depend on the position of the knee joint.