Journal of Korean Physical Therapy Science (대한물리치료과학회지)

Korean Physical Therapy Science (대한물리치료과학회)
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Muscle Activation Change of Rectus Abdominal Muscle and Erector Spinae Muscle depending on Shoe Heel-height on Gait

구두 굽 높이에 따른 보행시 복직근과 기립근의 근활성도 변화

  • Kim, Seong-Gil (Department of Physical Therapy, Daegu University) ;
  • Im, Dong-Ho (Department of Naturopathic Medicine, Dongbang Graduate University) ;
  • Kong, Eung-Kyung (Department of Naturopathic Medicine, Dongbang Graduate University)
  • 김성길 (대구대학교 물리치료학과) ;
  • 임동호 (동방대학원대학교 자연치유학과) ;
  • 공응경 (동방대학원대학교 자연치유학과)
  • Received : 2012.04.30
  • Accepted : 2012.06.25
  • Published : 2012.06.30
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Abstract

Purpose : The purpose of this study was to investigate the effect of different heel height on the electromyographic (EMG) activity in Rectus abdominis (RA) and Erector spinae (ES) during gait activity. Methods : A repeated measures design was used. 33 healthy females carried out a standardized gait activity under 3 conditions; with heel wedges of 1, 7, and 12cm in height. EMG activity was recorded from RA and ES during the activity. Data was analysed using the repeated one-way ANOVA. Results : First, as the shoe-heel height was getting higher, change of muscle activation indicated the statistically significant difference in rectus abdominis(p<0.05). Second, as the shoe-heel height was getting higher, change of muscle activation indicated the statistically significant difference in erector spinae(p<0.05). Conclusion : We found that as heel height increased, there was an increase in EMG activity in both RA and ES. This indicated that no RA : ES imbalance was elicited. This study provides information that will inform future research on how heel height affects muscle activity around the trunk.

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