Journal of the Korean Society for Precision Engineering (한국정밀공학회지)

Korean Society for Precision Engineering (한국정밀공학회)
권호 표지

Changes in Balance Characteristics Affected by the Visual Information during Single Leg Stance

외발서기 시 시각정보 차단에 따른 인체 균형 특성 변화 분석

  • 박정홍 (부산대학교 기계공학부) ;
  • 김광훈 (부산대학교 기계기술연구원) ;
  • 염창홍 (동아대학교 경기지도학과) ;
  • 손권 (부산대학교 기계공학부)
  • Received : 2011.01.18
  • Accepted : 2011.08.08
  • Published : 2011.11.01
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Abstract

The purpose of study was to analyze how the visual information affects balance control of individuals during single leg stance. A total of 27 young normal people (20 males and 7 females, age: $13.7{\pm}2.6$, height: $162.3{\pm}13.2$ cm, weight: $53.9{\pm}13.9$ kg) was voluntarily involved in the experiment. The subjects were requested to maintain balance for 20 seconds with eyes both open and closed on a force plate and then foot ground reaction data were collected for that duration. Results showed that mean velocity of COP in closed eyes condition was larger 1.84 times than that of the open-eyes condition and range of vertical angle was increased approximately one degree in the closed eyes condition. To accomplish a balance, the frequency power in mediolateral and anteroposterior components of the foot-ground reaction force was increased by 1.3~1.4 times. Consequently, visual absence during single leg stance can result in critical loss of balance and lead to instability of body control.

Keywords

References

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