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전기근육자극을 적용한 무릎 폄 저항운동 시 넙다리곧은근의 두께 변화에 미치는 즉각적 효과

The immediate effect of electrical muscle stimulation on rectus femoris thickness during resisted knee extension exercise

김강훈
한국융합학회 (Korea Convergence Society)|2021.06|한국융합학회논문지 (Journal of the Korea Convergence Society)|제12권 제6호|pp. 27-32|DOI https://doi.org/10.15207/JKCS.2021.12.6.027

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키워드

융복합Convergence전기근육자극 훈련무릎기능고강도 저항운동저강도 저항운동최대반복횟수Electrical muscle stimulation trainingKnee functionHigh-intensity resistance trainingLow-intensity resistance trainingOne-repetition maximum
주제분류학제간연구

초록

본 연구의 목적은 전기근육자극을 적용한 무릎 폄 저항운동 시 넙다리곧은근의 두께 변화에 미치는 즉각적 효과를 알아보고자 하였다. 20명의 건강한 성인을 대상으로 유사실험 단일집단 검사전-검사후 설계로 진행하였다. 대상자의 양쪽 넙다리 폄의 1RM을 탄력밴드를 이용해 간접적으로 측정하고, 탄력밴드를 이용한 무릎 폄 저항운동은 오른쪽 다리에 고강도(1RM의 80%)로, 왼쪽 다리에는 저강도(1RM의 50%로 전기근육자극을 같이 적용)로 5세트를 적용하였다. 근육 두께 측정은 초음파로 운동 전후에 넙다리곧은근(1/2 부위, 1/4 부위)에 측정하였다. 사전 테스트와 사후 테스트 사이에 전기근육자극을 적용한 탄력밴드 저강도 운동에 넙다리곧은근 두께가 통계적으로 유의한 차이가 있었다(p<.05). 본 연구의 결과는 전기근육자극을 결합한 탄력밴드 저강도 저항운동이 넙다리곧은근 두께를 증가시키는 데 즉각적인 효과가 있었다. 이 결과를 바탕으로 앞으로 고강도 저항운동을 할 수 없는 노령층에 전기근육자극을 적용한 저강도 저항운동을 접목하는 중재 방법의 효과에 대한 검증과 다양한 신체 부위별 운동프로그램 개발도 필요하다 여겨진다.

Abstract

The purpose of this study was to compare the immediate effect of EMS (electrical muscle stimulation) on rectus femoris thickness during resisted knee extension exercise in healthy adults. This experiment was conducted on 20 healthy adults as pretest-posttest nonequivalent one group design. The subject's 1RM of both knee extension was measured indirectly using an elastic band, and the knee extension resistance exercise using an elastic band was applied to high intensity (80% of 1RM) on the right leg and low intensity (50% of 1RM with EMS) on the left leg, which were applied with 5 sets. Muscle measurements were performed on the rectus femoris (1/2 site, 1/4 site) using ultrasonography before and after exercise. There was a statistically significant difference on the thickness of the rectus femoris in low intensity exercise of the elastic band applied with EMS between pre-test and post-test (p<.05). The results of this study showed that elastic band low intensity exercise combined with EMS had an immediate effective in increasing the thickness of rectus femoris. Based on this result, it is also necessary to verify the effectiveness of intervention methods incorporating low-intensity resistance exercises applying EMS to elderly who cannot exercise high-intensity resistance training in the future, and to develop exercise programs for various body parts.

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