Background

High-heeled shoes are currently preferred by women due to contemporary aesthetics. However, high-heeled shoes may increase the effort required to ascend stairs and, hence, alter biomechanical performance.

Research question: How do high-heel shoe parameters affect the pelvis position, lower extremities kinematics, and ground reaction force in young women during stair ascent motion?

Methods

Stair ascent experiments were performed with 20 healthy adult women. The participants were instructed to ascend a 3-step staircase, wearing heeled shoes of different heel heights and heel types and one pair of flat shoes as the control group. Changes in lower body biomechanics were analyzed with kinematics and ground reaction force variables collected from the dominant limb. A two-way repeated ANOVA was performed to determine which variables were affected by heel type and which were affected by heel height or a combination of both.

Results

As the heel height increased, an increased range of ankle dorsiflexion-plantarflexion, as well as pelvic rotation, was observed(P = 0.039 and P = 0.003, respectively). A thinner heel type displayed a larger pelvic forward tilt movement(P = 0.026)and 1st peak vertical force(P = 0.025), as well as a smaller 2nd peak vertical force (P = 0.002). With high heels, increased external rotation of the knee, inversion and plantar flexion, and flexion values of the knee were observed. We also observed decreased external rotation of the pelvis, ankle eversion, varum, and dorsiflexion.

Significance

To stabilize body posture during stair ascent motion with high-heeled shoes, compensatory response including increasd pelvic range of motion and changing the joint angles of the lower extremities.

中文翻译：

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高跟鞋参数对楼梯上升运动中年轻女性成年人生物力学性能的影响。

背景

由于现代美学的原因，目前高跟鞋是女性的首选。但是，高跟鞋可能会增加爬楼梯所需的精力，从而改变生物力学性能。

研究问题：上楼梯时，高跟鞋参数如何影响年轻女性的骨盆位置，下肢运动学和地面反作用力？

方法

对20名健康成年女性进行了楼梯上升实验。指示参与者爬上3步楼梯，穿上不同鞋跟高度和脚跟类型的高跟鞋，并以一双平底鞋为对照组。使用从主要肢体收集的运动学和地面反作用力变量分析了下半身生物力学的变化。进行了两次重复的方差分析，以确定哪些变量受脚跟类型的影响，哪些变量受脚跟高度的影响或两者的组合。

结果

随着脚后跟高度的增加，观察到踝背屈-足底屈曲的范围增加，以及骨盆旋转（分别为P = 0.039和P = 0.003）。较薄的脚跟类型显示较大的骨盆前倾运动（P = 0.026）和第一峰值垂直力（P = 0.025），以及较小的第二峰值垂直力（P = 0.002）。高跟鞋时，观察到膝关节外旋增加，内翻和足底屈曲以及膝关节屈曲值。我们还观察到骨盆的外部旋转，踝关节外翻，内翻和背屈减少。

意义

为了使用高跟鞋在楼梯上升运动过程中稳定身体姿势，补偿性反应包括增加骨盆的运动范围和改变下肢的关节角度。