Journal of the Korean Society for Precision Engineering (한국정밀공학회지)

Korean Society for Precision Engineering (한국정밀공학회)
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Changes of Muscle Activation Pattern of Trunk Muscles during Whole-body Tilts with and without Axial Rotation

전신 기울임 운동시 축 회전 유무에 따른 체간근 활성도 변화

  • 김솔비 (근로복지공단 재활공학연구소) ;
  • 장윤희 (근로복지공단 재활공학연구소) ;
  • 김신기 (근로복지공단 재활공학연구소) ;
  • 배태수 (근로복지공단 재활공학연구소) ;
  • 문무성 (근로복지공단 재활공학연구소) ;
  • 박종철 (스트라텍)
  • Received : 2011.10.18
  • Accepted : 2012.04.13
  • Published : 2012.07.01
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Abstract

Determining of the exercise intensity is very important in terms of induction of low fatigue during exercise. Little information is available on the contraction level of the trunk muscles during whole body tilts with and without axial rotation. This study was to investigate the difference muscle activation level according to axial rotation. Twenty subjects were participated. The muscle activities of the five trunk muscles were bilaterally measured at eight axial rotation angles with 12 tilt angles along $15^{\circ}$ intervals. The results showed that tilt with $45^{\circ}$ axial rotation was more balanced in the same tilt angle and was maintained approximately level of 40% MVC at over $60^{\circ}$ tilt angle with respect to co-contraction of abdominal and back muscle. Lumbar stabilization exercise using whole body tilts would be more effective with axial rotation than without axial rotation in terms of muscle co-contraction.

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References

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