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The Effect of Human Lower Limb Vibration on Postural Stability during Unstable Posture

불안정한 자세에서 하지에 인가한 진동자극이 자세 안정성 개선에 미치는 영향

  • Eun, H.I. (Dept. of Healthcare Engineering, Graduate School, Chonbuk National Univ.) ;
  • Yu, M. (Dept. of Biomedical Engineering, Graduate School, Chonbuk National Univ.) ;
  • Kim, D.W. (Division of Biomedical Engineering, Collage of Engineering, Chonbuk National Univ.) ;
  • Kwon, T.K. (Division of Biomedical Engineering, Collage of Engineering, Chonbuk National Univ.) ;
  • Kim, N.G. (Division of Biomedical Engineering, Collage of Engineering, Chonbuk National Univ.)
  • 은혜인 (전북대학교 대학원 헬스케어공학과) ;
  • 유미 (전북대학교 대학원 의용생체공학과) ;
  • 김동욱 (전북대학교 공과대학 바이오메디컬공학부) ;
  • 권대규 (전북대학교 공과대학 바이오메디컬공학부) ;
  • 김남균 (전북대학교 공과대학 바이오메디컬공학부)
  • Published : 2007.10.31

Abstract

We studied the effect of vibratory stimulations of different leg muscles, tibialis anterior(TA) and triceps surae(TS), and plantar zones in ten healthy subjects during 1) quiet standing, 2) forward lean of body, 3) backward lean of body, 4) right lean of body, and 5) left lean of body. The experiments were performed on the force platform. The effect of vibration were measured by monitoring the area of COP(Center of pressure) sway. The subjects wore a vibratory stimulation system on foot and ankles and were given the instruction not to resist against the applied perturbations. The results show that all vibratory stimulations to lower limb muscles and plantar zones reduced the COP sway area. This reduction of the COP sway area occurred also in partial vibratory stimulations during quiet standing. In forward lean of body, vibratory stimulations to TA reduced the COP sway area. During backward lean of body, vibratory stimulations to TS reduced the COP sway area. When the subject was tilted right, vibratory stimulations to left plantar zone reduced the COP sway area. During left lean of body, vibratory stimulations to right plantar zone reduced the COP sway area. Thus, the influence of vibratory stimulations to leg muscle and plantar zones differed significantly depending on the lean of body. We suggest that the vibration stimuli from leg muscles and plantar zones could be selectively used to help maintaining postural balance stable.

Keywords

References

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