The Journal of Korean Physical Therapy

The Korean Society of Physical Therapy (대한물리치료학회)
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Electromyography Activity of Lower Leg Muscles After Ankle Sprain

발목 관절 염좌 후 하퇴근 근활성도의 특성

  • Ha, Sung-Hee (Dept. of Physical Therapy, Graduate School of Health Science Catholic University of Pusan) ;
  • Lee, Hyun-Ok (Dept. of Physical Therapy, Catholic University of Pusan) ;
  • Kim, Suhn-Yeop (Dept. of Physical Therapy, Catholic University of Pusan) ;
  • Kim, Jong-Soon (Dept. of Physical Therapy, Catholic University of Pusan)
  • 하성희 (부산가톨릭대학교 보건과학대학원 물리치료) ;
  • 이현옥 (부산가톨릭대학교 물리치료학과) ;
  • 김선엽 (부산가톨릭대학교 물리치료학과) ;
  • 김종순 (부산가톨릭대학교 물리치료학과)
  • Published : 2005.12.24
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Abstract

The purpose of this study was to measure magnitude of lower leg muscle activity during dynamic stability tests performed on an unstable board by subjects with sprained lateral ankles. Fifteen lateral ankle sprain subjects(8 male, 7 female) participated in this study. The muscle activity was measured at gastrocnemious, tibialis anterior, peroneus longus during dynamic stability tests performed on Biodex stability system as surface EMG. The EMG amplitude of each muscle was normalized to the amplitude in the maximal voluntary isometric contraction(MVIC) of each muscle. As results, peroneus longus evidenced significant difference at stable and unstable grade comparing injured with uninjured sides. Gastrocnemious and tibialis anterior evidenced no significant difference. Change of muscle activity with stable and unstable grade evidenced no significant difference on injured and uninjured sides. The data provided information on peroneus longus contributes to dynamic stability after lateral ankle sprains. Peroneus longus training program may have to be emphasized after an ankle sprain.

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