Journal of the Korea Academia-Industrial cooperation Society (한국산학기술학회논문지)

The Korea Academia-Industrial cooperation Society (한국산학기술학회)
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Effect of hip positions in frontal plane on abdominal muscle activities during bridging exercise

교각운동시 이마면에서 엉덩관절 위치가 배근육 근활성도에 미치는 영향

  • Lee, Won-Hwee (Department of Physical Therapy, Jeonju Vision College)
  • 이원휘 (전주비전대학교 물리치료학과)
  • Received : 2018.12.17
  • Accepted : 2019.03.08
  • Published : 2019.03.31
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Abstract

The purpose of this study is to investigate the effect of the hip positions in frontal plane on abdominal muscle activities during bridging exercise. Twenty six subjects who have healthy conditions were asked to perform bridging exercise in three starting positions which are hip abduction, neutral and hip adduction. We used surface electromyography to compare the activities of both external oblique, internal oblique and rectus abdominis muscle. We analyzed the data by using repeated one way ANOVA, The alpha level was set at 0.05. The results showed that the muscle activities of both sides of external oblique, and internal oblique were significantly different among three starting positions. The activity of both sides of rectus abdominis were insignificantly different among three positions. The muscle activities of both sides of external oblique muscle and left internal oblique in bridging exercise with hip adduction position were significantly greater than hip neutral positions. The muscle activity of right internal oblique in bridging exercise with hip abduction positions. Our results suggest that bridging exercise with hip adduction position is recommended to lumbar stabilization exercise and the factor of hip position is important for controlling exercise intensity when designing bridging exercise program.

본 연구의 목적은 이마면에서 엉덩관절 위치에 따라 배근육들의 근활성도를 측정하여 비교함으로 이마면에서 엉덩관절의 위치가 배근육들의 근활성도에 영향을 미치는지 알아보는 것이다. 연구방법은 20대의 건강한 남녀 26명을 대상으로 엉덩관절 중립, 모음, 그리고 벌림 자세에 따라 교각운동을 하였을 때 표면 근전도 장비를 이용하여 양쪽 배곧은근과 배바깥빗근, 배속빗근의 근활성도를 비교하였다. 통계 방법은 반복측정 일요인 분산분석을 실시하였고, 유의수준은 0.05로 하였다. 연구 결과 배바깥빗근과 배속빗근은 이마면에서 엉덩관절 위치에 따라 유의한 차이가 있었고, 배곧은근은 유의한 차이가 없었다. 양쪽 배바깥빗근과 왼쪽 배속빗근은 엉덩관절 중립자세보다 엉덩관절 모음 자세에서 근활성도가 유의하게 증가하였으며 오른쪽 배속빗근은 엉덩관절 벌림 자세보다 엉덩관절 모음 자세에서 근활성도가 유의하게 증가하였다. 본 연구를 통해 엉덩관절 모음 자세가 다른 자세들에 비해 안정화 운동에 더욱 효과적일 수 있다는 것을 알 수 있었고, 안정화 운동 프로그램을 고안할 때 운동의 강도를 조절하기 위해 이마면에서 엉덩관절의 위치에 대한 요소를 적용할 수 있을 것이다.

Keywords

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Fig. 1. Various hip positions during bridging exercise (a)Neutral bridging (b)Adduction bridging (c)Abduction bridging

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Fig. 2. Comparison of abdominal muscle activities during bridging exercise according to hip positions in frontal plane Rt. RA: Right rectus abdominis, Lt. RA: Left rectus abdominis, Rt. EO: Right external oblique, Lt. EO: Left external oblique, Rt. IO: Right internal oblique, Lt. IO: Left internal oblique NB: neutral bridging, AdB: adduction bridging, AbB: abduction bridging, *p<0.05

Table 1. General characteristics of subjects

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Table 2. Comparison of abdominal muscle activities during bridging exercise according to hip positions in frontal plane

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