Journal of the Korean Society of Physical Medicine (대한물리의학회지)

The Korean Society of Physical Medicine (대한물리의학회)
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The Effects of Ankle Joint Angle on Knee Extensor Electromyographic Activity

발목관절의 각도가 무릎관절 폄근의 근활성도에 미치는 영향

  • Yeo, Sang-Seok (Department of Physical Therapy, Graduate School of Rehabilitation Science, Daegu University) ;
  • Kwon, Jung-Won (Department of Physical Therapy, Graduate School of Rehabilitation Science, Daegu University) ;
  • Kim, Chung-Sun (Department of Physical Therapy, Collage of Rehabilitation Science, Daegu University)
  • 여상석 (대구대학교 대학원 재활과학과 물리치료) ;
  • 권중원 (대구대학교 대학원 재활과학과 물리치료) ;
  • 김중선 (대구대학교 재활과학대학 물리치료학과)
  • Published : 2009.02.28
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Abstract

Purpose : The purpose of this study was to find the effect of ankle joint angle on knee extensor electromyographic activity following knee extension exercise. Methods : Ten male university students participated in the study. The subjects performed isometric maximal voluntary knee extensor contractions (MVC) and knee extensor EMG activity measured in with three different ankle joint angle. The EMG activity of rectus femoris(RF), vastus medialis(VM), vastus lateralis(VL) were measured using surface electromyography. Results : EMG activity of vastus lateralis following the change of ankle joint angle was shown statistically significant difference. Conclusion : Ankle plantar flexion position increase EMG activity of vastus lateralis during knee extension exercise.

Keywords

References

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