Korean Journal of Applied Biomechanics (한국운동역학회지)

Korean Society of Applied Biomechanics (한국운동역학회)
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Analysis of Proper Sampling Duration in Foot Positions during Assessment of Quiet Stance Balance in the Elderly Women Using Center of Pressure

압력중심점을 이용한 고령 여성의 정적서기 균형평가 시발 위치에 따른 적정 샘플링 시간 분석

  • Published : 2008.09.30
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Abstract

The purpose of this study was to investigate proper sampling duration while executing quiet stance of feet together position and a preferred foot position with eyes open using COP variables through GRF system. The subjects participated in this study were twenty healthy elderly women individuals($68.9{\pm}6.8$ years). It represented that the sampling duration needed over 20 s in the FTP and over 60 s in the PFP during assessment of quiet stance. The sampling duration shorter than 20 s in the FTP and 60 s in the PFP may not provide the sample showing stability. Inversely if the sampling duration becomes longer, it can distort the sample showing stability. In the future, I expect more studies of the proper sampling duration through various groups and the study of characteristics of participants caused by more sampling duration.

이 연구는 압력중심점 변수를 이용하여 고령 여성 그룹 20명($68.9{\pm}6.8$세)을 대상으로 눈뜨고 정적서기 테스트시 주로 사용되고 있는 두 발을 모아 나란히 붙인 위치(FTP)와 피험자 자신이 편하게 느끼는 간격으로 나란히 놓은 위치(PFP)에 따른 적절한 샘플링 시간을 알아보는데 목적이 있다. 샘플링 시간은 FTP 발 위치를 이용할 경우 20초 이상, PFP 발 위치를 이용할 경우 60초 이상이 적절한 것으로 나타났다. FTP 발 위치 20초와 PFP 발 위치 60초 보다 짧은 샘플링 시간은 안정성을 나타내는 샘플을 제공하지 않거나, 역으로 너무 길어지면 피로 유발로 인해 안정성을 나타내는 샘플을 왜곡시킬 수 있을 것이다. 차후 다양한 그룹들을 대상으로 적절한 샘플링 시간에 대한 추가 연구와 보다 긴 샘플링 시간으로 인해 나타나는 피험자들의 특이적인 현상에 대한 연구가 기대된다.

Keywords

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