Ankle muscle activity characteristics of stroke patients with hemiplegia at gait initiation

IF 2.2 3区医学 Q3 NEUROSCIENCES

Gait & posture Pub Date : 2025-04-07 DOI:10.1016/j.gaitpost.2025.04.006

Ryo Onuma , Fumihiko Hoshi , Tadamitsu Matsuda , Tomoko Sakai , Tetsuya Jinno

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引用次数: 0

Abstract

Objectives

This study aimed to clarify the ankle muscle activity characteristics during gait initiation in stroke patients with hemiplegia.

Methods

Gait initiation behavior was analyzed in 10 elderly controls and 30 stroke patients with hemiplegia. Activity latencies of the tibialis anterior and soleus muscles on both sides were measured using surface electromyography. The left and right conditions of the participant's leading leg were randomized and specified, and the gait initiation task was performed six times. Muscle activity latencies between the stance and stepping sides in both groups were compared. We also compared the paretic and non-paretic sides of stroke patients.

Results

Muscle activity latency of the paretic leg was delayed in stroke patients compared to elderly controls. Activity latencies of the tibialis anterior and soleus muscles on the paretic side were delayed compared to those on the non-paretic side in stroke patients when leading with the paretic leg. Delayed muscle activity latency was observed only in the tibialis anterior muscle on the paretic side than on the non-paretic side when leading with the non-paretic leg.

Conclusion

This study showed that muscle activity in the paretic leg of stroke patients was delayed and that ankle muscle activity characteristics differed depending on the leading leg. These new results may provide a basis for training aimed at improving the latency of muscle activity in the paretic leg, as well as specific training for gait initiation by guiding the non-paretic leg, considering muscle activity patterns.

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卒中偏瘫患者步态起始时踝关节肌肉活动特征

目的研究脑卒中偏瘫患者步态启动过程中踝关节肌肉活动特征。方法对10例老年对照和30例 脑卒中偏瘫患者的步态起始行为进行分析。采用表面肌电图测量两侧胫骨前肌和比目鱼肌的活动潜伏期。随机指定参与者前腿的左右状态，并执行6次步态启动任务。比较两组站立侧和踏步侧的肌肉活动潜伏期。我们还比较了卒中患者的双亲侧和非双亲侧。结果脑卒中患者下肢肌肉活动潜伏期较老年对照组明显延迟。卒中患者伴瘫腿时，与非瘫侧相比，瘫侧胫前肌和比目鱼肌的活动潜伏期延迟。当伴非瘫腿时，仅在瘫侧胫骨前肌观察到肌肉活动延迟，而在非瘫侧观察到肌肉活动延迟。结论脑卒中患者瘫腿的肌肉活动延迟，踝关节肌肉活动特征随前导腿的不同而不同。这些新结果可能为旨在改善瘫腿肌肉活动潜伏期的训练提供基础，以及通过指导非瘫腿，考虑肌肉活动模式来启动步态的特定训练。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Gait & posture 医学-神经科学

CiteScore

4.70

自引率

12.50%

发文量

616

审稿时长

6 months

期刊介绍： Gait & Posture is a vehicle for the publication of up-to-date basic and clinical research on all aspects of locomotion and balance. The topics covered include: Techniques for the measurement of gait and posture, and the standardization of results presentation; Studies of normal and pathological gait; Treatment of gait and postural abnormalities; Biomechanical and theoretical approaches to gait and posture; Mathematical models of joint and muscle mechanics; Neurological and musculoskeletal function in gait and posture; The evolution of upright posture and bipedal locomotion; Adaptations of carrying loads, walking on uneven surfaces, climbing stairs etc; spinal biomechanics only if they are directly related to gait and/or posture and are of general interest to our readers; The effect of aging and development on gait and posture; Psychological and cultural aspects of gait; Patient education.