The Journal of Korean Physical Therapy

The Korean Society of Physical Therapy (대한물리치료학회)
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The Relationship Between Ankle Muscles and An EMG-Based Physically Interactive Game

  • Ko, Yu-Min (Department of Physical Therapy, Gangneung Yeongdong College) ;
  • Park, Seol (Department of Physical Therapy, College of Medical Science, Catholic University of Daegu) ;
  • Lee, Ho-Cheol (Faculty of Mechanical and Automotive Engineering, College of Engineering Catholic University of Daegu) ;
  • Lim, Chang-Hun (Department of Physical Therapy, Gangneung Yeongdong College) ;
  • Park, Ji-Won (Department of Physical Therapy, College of Medical Science, Catholic University of Daegu)
  • Received : 2015.11.11
  • Accepted : 2015.12.24
  • Published : 2015.12.25
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Abstract

Purpose: This study was to identify the relationship between the game score and muscle strength in order to elucidate whether the obtained score for the dorsiflexor and plantar flexor muscles in the ankle joint using an EMG-based interactive game system can reflect muscle strength as measured conventionally. Methods: Forty adults were enrolled in the present study. They had no congenital deformities, and no neurological or orthopedic disorders in the 6 months prior to the start of the study. The Biodex were used to measure the isokinetic concentric maximal strength of the plantar flexor and dorsiflexor muscles in the ankle joint. EMG electrodes were attached to the tibialis anterior and gastrocnemius. Results: (1) There was a positive relationship between the obtained game score by the plantar flexor (sPF) and muscle strength of the plantar flexor (tPF) and dorsiflexor (tDF). In addition, the tPF affected the sPF, but the tDF did not. Thus, the higher the tPF, the higher the sPF. (2) There was no relationship between the obtained game score of dorsiflexor (sDF) and tPF or tDF. In addition, neither the tDF or tPF affected the sDF. Conclusion: The game score had a relationship with muscle strength, which is related to ankle instability and re-impairment. Thus we suggest that this game system can be used to predict the degree of weakness of muscle strength.

Keywords

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