Background

Women have an increased likelihood of sustaining a fall-related injury compared to men; however, little is known about fall prevention strategies between genders. The purpose of this study was to compare the gender differences in lower limb reactions and three-dimensional recovery patterns following a treadmill-induced trip perturbation.

Methods

Seventy-six participants who are right limb dominant enrolled in the study, which included 41 females (26.15 [9.92] years old) and 35 males (27.11 [9.15] years old). The outcome measures included a three-dimensional (3D) range of motion (ROM) analysis on the bilateral hip, knee, and ankle joints following the trip perturbation at a 0.89 m/s velocity for 0.12 m. This induced trip caused subjects to walk forward for a 0.26 s duration.

Findings

The female group demonstrated significantly increased frontal plane ROM in the right hip (t = 2.71, p = 0.01) and left ankle (t = 2.16, p = 0.03) as well as increased sagittal plane ROM in the right (t = 2.07, p = 0.04) and left (t = 2.36, p = 0.02) ankles. There was a significant gender interaction on 3D body region (F = 6.84, p = 0.01) following the perturbation.

Interpretation

There was a 3D gender difference on the lower limbs for balance control. The female group demonstrated increased sagittal motion in both ankles following a trip perturbation. In addition, their ROM increased on the dominant hip and non-dominant ankle in the frontal plane, which was compensated by step width for standing stability. Clinicians might want to consider the implications of gender differences on lower limb reaction patterns to help patients avoid potential injuries/falls.

中文翻译：

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年轻人发生新型旅行扰动后髋踝补偿的性别差异

背景

与男性相比，女性遭受摔倒伤害的可能性更高；但是，关于两性之间的跌倒预防策略知之甚少。这项研究的目的是比较跑步机引起的行程扰动后下肢反应和三维恢复模式中的性别差异。

方法

该研究共纳入76位以右肢为主的参与者，其中包括41位女性（26.15 [9.92]岁）和35位男性（27.11 [9.15]岁）。结果度量包括在以0.89 m / s的速度进行0.12 m的行程扰动后，对双侧髋，膝和踝关节进行的三维（3D）运动范围（ROM）分析。这种诱发的行程导致受试者向前行走0.26 s。

发现

女性组表现出右髋的前额平面ROM显着增加（t  = 2.71，p  = 0.01）和左脚踝（t  = 2.16，p  = 0.03）以及右侧的矢状面ROM显着增加（t  = 2.07，p  = 0.04）和左（t  = 2.36，p  = 0.02）脚踝。 摄动后，在3D身体区域存在明显的性别相互作用（F = 6.84，p = 0.01）。

解释

下肢存在3D性别差异以控制平衡。女性组在出行扰动后表现出双脚踝矢状运动增加。此外，它们的ROM在额骨的优势髋部和非优势踝部增加，这通过步幅进行补偿以提高站立稳定性。临床医生可能希望考虑性别差异对下肢反应模式的影响，以帮助患者避免潜在的伤害/跌倒。