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Analysis of Lower Extremity Muscle Activation According to Squat Type during Whole-Body Vibration

전신진동 운동 시 스쿼트 형태에 따른 하지근육의 근활성 효과 분석

  • Received : 2018.07.31
  • Accepted : 2018.10.20
  • Published : 2018.10.28

Abstract

The purpose of this study is to clarify the effects of whole-body vibration and to provide scientific basis for effective exercise by analyzing the differences in lower extremity muscle activation according to squat position during whole body vibration. In this study, muscle activation during whole-body vibration was measured in 10 healthy males in their 20s with no orthopedic conditions during standing posture, deep squat, half squat, and heel raise squat. Muscle activation was compared by measuring the root mean square (RMS) with electromyography electrodes attached to lateral gastrocnemius, tibialis anterior, vastus lateralis, and biceps femoris. The vibration intensity was applied in combinations of the volumes of 50 and 80 and the frequencies of 10, 25, and 40 Hz in each posture. The results showed that there were differences in muscle activations of external gastrocnemius, tibialis anterior, and vastus lateralis among the position(p<.05). The heal raise squat was found to have a high muscle activation effect.

본 연구는 전신진동 자극시 스쿼트의 형태에 따른 하지근육의 근활성 효과의 차이를 분석함으로써 전신진동운동의 효과를 규명하고 효율적인 운동을 위한 과학적 근거를 제시하는데 그 목적이 있다. 본 연구는 정형외과적 질환이 없는 건강한 20대 남성 10명을 대상으로 똑바로 선자세, 슬관절을 90도, 120도 굴곡시킨 일반적인 스쿼트 자세와 뒷꿈치를 들어 올린 혼합 스쿼트 자세의 진동자극 시 근활성도를 측정하였다. 근활성도는 외측비복근, 전경골근, 외측광근, 대퇴이두근에 근전도 전극을 부착한 후 RMS를 구하여 비교하였으며 진동 자극의 강도는 각 자세에서 볼륨 50, 80, 주파수 10, 25, 40Hz를 혼합하여 적용하였다. 분석 결과 외측비복근과 전경골근 외측광근에서 자세별 근활성도의 차이가 나타났고 뒷꿈치를 들어올린 자세에서 근활성 효과가 높음을 확인할 수 있었다. 이와 같은 결과는 전신진동 자극 시 스쿼트 자세와 강도에 따라 근활성 효과에 차이가 있으며, 운동의 효율을 극대화하기 위하여 목표 근육에 따라 다양한 자세와 강도가 적용되어야 함을 의미한다.

Keywords

References

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