Abstract：
Purpose: This study aimed to evaluate the effects of high-heeled shoes (HHS) and experience with such footwear on foot loading and standing balance using linear and nonlinear methods. Methods: Sixteen young female experts in wearing high-heeled shoes (HHE) and sixteen young females who occasionally wore high-heeled shoes (HHO) completed a Fall Risk Test (FRT) on the Biodex Balance System platform. They also underwent a both-leg standing test on the Zebris pressure mapping platform, both barefoot and while wearing 11 cm HHS. The study analyzed several parameters, including the FRT index, foot loading parameters, linear measures of postural stability (Center of Pressure (CoP) path length and velocity), and nonlinear postural control measures (sample entropy - SampEn, fractal dimension - FD, and the largest Lyapunov exponent - LyE). Results: HHS caused a significant increase the fall risk of more than 44%, but only in the HHE group. The presence of HHS caused a significant increase in CoP path length and CoP velocity by almost 78%. The values of these parameters increased by more than 67% in the HHO group and by more than 92% in the HHE group. HHS caused a significant increase in the values of nonlinear measures (FD and LyE) in the mediolateral direction. Higher FD and LyE values suggest the ability to react faster to destabilizing stimuli and better balance control related to plasticity and adaptability to new conditions. HHS also led to up to 70% loading on the supporting limb. Conclusions: High heels in the population of young women significantly worsen static balance.
摘要：
目的：本研究旨在使用线性和非线性方法评估高跟鞋（HHS）的影响以及此类鞋类对足部负荷和站立平衡的经验。方法：16名穿着高跟鞋（HHE）的年轻女性专家和16名偶尔穿着高跟鞋（HHO）的年轻女性专家在BiodexBalanceSystem平台上完成了跌倒风险测试（FRT）。他们还在Zebris压力测绘平台上进行了双腿站立测试，赤脚和穿着11厘米HHS。研究分析了几个参数，包括FRT索引，脚加载参数，姿势稳定性的线性测量(压力中心(CoP)路径长度和速度)，和非线性姿势控制措施(样本熵-SampEn，分形维数-FD，和最大的Lyapunov指数-LyE)。结果：HHS引起的跌倒风险显著增加，超过44%，但仅在HHE组中。HHS的存在导致CoP路径长度和CoP速度显着增加了近78％。这些参数的值在HHO组中增加了67％以上，在HHE组中增加了92％以上。HHS导致中外侧方向的非线性测量值（FD和LyE）显着增加。较高的FD和LyE值表明能够更快地对不稳定刺激做出反应，并且能够更好地控制与可塑性和对新条件的适应性有关的平衡。HHS还导致支撑臂负载高达70％。结论：年轻女性人群中的高跟鞋显着恶化了静态平衡。
