한국체육학회지자연과학편

Korean Alliance for Health: Physical Education: Recreation:and Dance (한국체육학회)
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The effect of walking with high-heel shoes on local dynamic stability

보행 시 하이힐 높이가 국부적 동적 안정성에 미치는 영향

Ryu, Ji-Seon
류지선

  • Published : 20090100
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Abstract

The purpose of this study was to determine the variability present in time series generated from high-heeled gait via nonlinear analysis. Twelve women (mean height: 162.3$\pm$4.1 cm, mean body mass: 55.4$\pm$5.5 kg, mean age: 24.5$\pm$4.4 yrs.) without history or complain of lower limb pain participated and were asked to walk on a treadmill at their preferred walking speed (mean speed 3.14$\pm$0.5 km/hr). Three-dimensional motion analysis was performed with a 6-camera motion analysis system (Qualisys, Inc., Switzerland). Each participant was asked to perform 100 strides continuous treadmill walking with three different height of high heel shoes, 3, 6, and 9 cm. To quantify local dynamic system the largest Lyapunov exponents (LyE) were computed for nonlinear time series of center of the forehead displacement and the knee joint angle in sagittal plane. In this study, heel height affected on some of local dynamic stability, which is defined as the sensitivity of the system to small perturbations during locomotion.

이 연구의 목적은 여자 하이힐 (high heel)의 굽 높이 증가에 따라 보행 시 국부적 동적 안정성을 조사하기 위한 것이다. 이를 위해 12명 대상자는 높이 3 cm, 7 cm, 9 cm를 신고 적어도 100 스트라이드 트레이드밀 (treadmill) 보행을 실시했다. 보행 시 국부적 동적 안정성을 조사하기 위해 발에서 가장 멀리 떨어진 머리의 3차원 선형 시계열 연속 자료와 각형의 상대 무릎 각을 선정해 비선형 분석 기법인 Lyapunov 지수를 산출했다. 그 결과 다음과 같은 결론을 얻었다. 무릎관절과 머리의 상하 국부적 동적 안정성은 힐 높이 3 cm 보행이 7, 9 cm 보행보다 대체로 높았으나, 힐 높이가 증가함에 따라 안정성이 감소하는 뚜렷한 현상은 보이지 않았다. 그러나 머리 전후의 국부적 동적 안정성은 힐 높이에 따라 안정성이 감소하는 대체적으로 규칙적인 현상을 보인 반면, 머리의 좌우의 국부적 동적 안정성은 힐 높이에 영향을 받지 않은 것으로 관찰되었다.

Keywords

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