Hyun Seung-Hyun, Ryew Che-Cheong
Department of Kinesiology, College of Natural Science, Jeju National University, Jeju, Korea.
J Exerc Rehabil. 2018 Dec 27;14(6):1092-1095. doi: 10.12965/jer.1836376.188. eCollection 2018 Dec.
While common characteristics between wearing of high heel between carrying an infant elevate height of center of gravity, it is not known what interaction effect influence to leg stiffness. The aim of the study is to investigate the effect of carrying infant by hip seat carrier on leg mechanics during high heel gait. Adult female (n=9) and infant (n=9) participated as subjects. Infant was positioned on rear of trunk as of wearing 6 cm of high heel shoe. Change of leg mechanics was analyzed with ground reaction force variables (1st peak vertical force [PVF], 2nd PVF, center of pressure [medial-lateral, anterior-posterior]), extrapolated center of mass (XCoM) theta, and leg stiffness. While carrying infant with wearing of high heel more increased 1st PVF, 2nd PVF, and leg stiffness than normal gait, and more decreased medial-lateral center of pressure and XCoM theta. High heel and carrying infant showed potential transformation of posture for securement of stability, which related with mechanism to decrease an impulse type. In conclusion, it is suggest that gait for long time in the condition may accumulate fatigue on leg and increase falling injury, so experts of clinics and exercise rehabilitation should understand the mechanism that could recommend guideline for exercise prescription on several problems.
虽然穿高跟鞋和抱婴儿之间的共同特征是提高重心高度，但尚不清楚对腿部僵硬程度有何种相互作用影响。本研究的目的是调查使用髋部座椅背带抱婴儿对高跟鞋步态期间腿部力学的影响。成年女性（n = 9）和婴儿（n = 9）作为受试者参与。将婴儿放置在躯干后部，如同穿着6厘米高跟鞋一样。通过地面反作用力变量（第一峰值垂直力[PVF]、第二PVF、压力中心[内外侧、前后]）、推断质心（XCoM）角度和腿部僵硬程度来分析腿部力学的变化。与正常步态相比，穿着高跟鞋抱婴儿时，第一PVF、第二PVF和腿部僵硬程度增加更多，而内外侧压力中心和XCoM角度降低更多。高跟鞋和抱婴儿显示出为确保稳定性而进行姿势潜在转变，这与减少冲动类型的机制有关。总之，建议在这种情况下长时间行走可能会使腿部积累疲劳并增加跌倒受伤风险，因此临床和运动康复专家应了解该机制，以便针对多个问题推荐运动处方指南。
