Luximon Yan, Cong Yan, Luximon Ameersing, Zhang Ming
School of Design, The Hong Kong Polytechnic University, Hung Hom, Hong Kong, China.
Interdisciplinary Division of Biomedical Engineering, The Hong Kong Polytechnic University, Hung Hom, Hong Kong, China; Key Lab of Prosthetics and Orthotics Technology, Beijing College of Social Administration, Beijing, China.
Hum Mov Sci. 2015 Jun;41:307-19. doi: 10.1016/j.humov.2015.04.003. Epub 2015 Apr 21.
High-heeled shoes are associated with instability and a high risk of fall, fracture, and ankle sprain. This study investigated the effects of heel base size (HBS) on walking stability under different walking speeds and slope angles. The trajectory of the center of pressure (COP), maximal peak pressure, pressure time integral, contact area, and perceived stability were analyzed. The results revealed that a small HBS increased the COP deviations, shifting the COP more medially at the beginning of the gait cycle. The slope angle mainly affected the COP in the anteroposterior direction. An increased slope angle shifted the COP posterior and caused greater pressure and a larger contact area in the midfoot and rearfoot regions, which can provide more support. Subjective measures on perceived stability were consistent with objective measures. The results suggested that high-heeled shoes with a small HBS did not provide stable plantar support, particularly on a small slope angle. The changes in the COP and pressure pattern caused by a small HBS might increase joint torque and muscle activity and induce lower limb problems.
高跟鞋与不稳定性以及跌倒、骨折和脚踝扭伤的高风险相关。本研究调查了不同步行速度和坡度角度下，鞋跟基部尺寸（HBS）对步行稳定性的影响。分析了压力中心（COP）轨迹、最大峰值压力、压力时间积分、接触面积和感知稳定性。结果显示，较小的HBS会增加COP偏差，在步态周期开始时使COP更向内侧偏移。坡度角度主要影响COP的前后方向。坡度增加会使COP向后移动，并导致中足和后足区域压力更大、接触面积更大，从而能提供更多支撑。关于感知稳定性的主观测量结果与客观测量结果一致。结果表明，HBS较小的高跟鞋不能提供稳定的足底支撑，尤其是在小坡度角度时。较小的HBS引起的COP和压力模式变化可能会增加关节扭矩和肌肉活动，并引发下肢问题。
