Background

Hallux valgus (HV) contributes to deficits in static balance and increased fall risk in older adults. Very limited research has examined dynamic balance deficits in walking in this population. These individuals generally walk slowly, as balance challenge is lesser at slow speeds.

Research question

How does the dynamic balance of older adults with HV differ from healthy controls at controlled slow and fast walking speeds?

Methods

Nineteen older adults with HV and 13 healthy controls completed 5 continuous walking trials at 1.0 and 1.3 m·s⁻¹ as whole body marker position and ground reaction force data were captured. Dynamic balance was evaluated using whole body center of mass (COM) and center of pressure (COP) inclination angles (IA) and duration of double support.

Results

There were no differences in measures of dynamic balance between older adults with and without HV at slow and fast speeds. At the faster speed, the peak sagittal plane COM-COP IA increased and the double support duration decreased, while the peak frontal plane COM-COP IA were not affected.

Significance

Older adults with HV do not exhibit deficits in dynamic balance during continuous walking at comfortable speeds when compared to healthy older adults.

中文翻译：

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拇外翻和步行速度对老年人动态平衡的影响。

背景

拇外翻（HV）导致静态平衡不足，并增加老年人跌倒的风险。非常有限的研究检查了该人群步行中的动态平衡不足。这些个体通常会缓慢行走，因为在慢速行驶时平衡感的挑战较小。

研究问题

在受控的慢速和快步速度下，患有HV的老年人的动态平衡与健康对照组有何不同？

方法

19名成年人的HV和13名健康对照者完成了5次以1.0和1.3 m·s ^-1进行的连续步行试验，这是因为获得了全身标记位置和地面反作用力数据。使用全身重心（COM）和压力中心（COP）倾斜角（IA）和双重支撑的持续时间评估动态平衡。

结果

在有和没有HV的老年人中，低速和高速时动态平衡的测量方法没有差异。以更快的速度，矢状矢状面COM-COP IA增大而双支撑持续时间减小，而额状额状面COM-COP IA不受影响。

意义

与健康的老年人相比，患有HV的老年人在以舒适的速度连续步行期间不会表现出动平衡的不足。