Effects of various modes of forward and backward cycling on neuro-biomechanical outcomes in individuals after stroke and healthy controls

IF 1.4 3区医学 Q4 ENGINEERING, BIOMEDICAL

Clinical Biomechanics Pub Date : 2025-02-01 DOI:10.1016/j.clinbiomech.2025.106435

J. Soulard , C. Duclos , R. Walha , D. Kairy , S. Nadeau

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引用次数: 0

Abstract

Background

Stationary cycling is recommended for post-stroke rehabilitation. This study assessed neuro-biomechanical outcomes of forward and backward cycling in three different modes: free-pedalling, constant speed (30 RPM) and constant resistance (5 or 10 Nm) in healthy controls and individuals after stroke.

Methods

Ten individuals after stroke and 10 healthy controls performed 60s cycling trials in different directions and modes on a semi-recumbent bike prototype. Cycling performance (speed, torque, coefficient of variation) and the activity of the non-dominant limb muscles (rectus femoris, vastus lateralis, tensor fascia latae, and biceps femoris) were collected.

Findings

Cycling performance was lower in backward than forward direction in both groups, but to a greater extent in individuals after stroke. Variability was reduced in backward compared to forward pedalling except for free-pedalling. At constant speed, both groups showed similar increase in rectus femoris activation during the propulsive phase of backward cycling while an increase was only observed in the stroke group for the tensor fascia latae. The constant resistance mode revealed more difference between groups: individuals after stroke showed changes of rectus femoris and vastus lateralis activation with pedalling direction in both phases while healthy controls had changes only in the vastus lateralis. Tensor fascia latae activation differed between groups but was not affected by direction. The biceps femoris activation was more variable.

Interpretation

Various cycling directions and modes influenced neuro-biomechanical outcomes, even more in individuals after stroke. Future research should determine how they could enhance functional abilities after stroke when used during rehabilitation.

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不同模式的前后循环对脑卒中后个体和健康对照者神经生物力学结果的影响

背景：在中风后的康复中，推荐使用固定式自行车。本研究评估了健康对照和中风后个体在三种不同模式下向前和向后骑自行车的神经生物力学结果：自由蹬车、恒速（30 RPM）和恒阻力（5或10 Nm）。方法：10例脑卒中患者和10例健康对照者在半卧式自行车样机上进行60秒不同方向和模式的骑行试验。收集骑车性能（速度、扭矩、变异系数）和非优势肢肌（股直肌、股外侧肌、阔筋膜张肌和股二头肌）的活动情况。结果：在两组中，向后骑自行车的表现都低于向前骑自行车的表现，但在中风后的个体中，这一程度更大。与向前蹬车相比，向后蹬车的可变性减少，但自由蹬车除外。在等速下，两组在反向循环推进阶段的股直肌激活都有相似的增加，而只有卒中组的阔筋膜张肌激活有所增加。恒阻模式组间差异更大：脑卒中个体在两个阶段均表现出股直肌和股外侧肌随蹬车方向的激活变化，而健康对照组仅表现出股外侧肌的激活变化。阔筋膜张肌的激活在两组之间存在差异，但不受方向的影响。股二头肌的活动变化更大。解释：不同的循环方向和模式影响神经生物力学结果，对中风后的个体影响更大。未来的研究应该确定在康复过程中使用它们如何提高中风后的功能能力。

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

Clinical Biomechanics 医学-工程：生物医学

CiteScore

3.30

自引率

5.60%

发文量

189

审稿时长

12.3 weeks

期刊介绍： Clinical Biomechanics is an international multidisciplinary journal of biomechanics with a focus on medical and clinical applications of new knowledge in the field. The science of biomechanics helps explain the causes of cell, tissue, organ and body system disorders, and supports clinicians in the diagnosis, prognosis and evaluation of treatment methods and technologies. Clinical Biomechanics aims to strengthen the links between laboratory and clinic by publishing cutting-edge biomechanics research which helps to explain the causes of injury and disease, and which provides evidence contributing to improved clinical management. A rigorous peer review system is employed and every attempt is made to process and publish top-quality papers promptly. Clinical Biomechanics explores all facets of body system, organ, tissue and cell biomechanics, with an emphasis on medical and clinical applications of the basic science aspects. The role of basic science is therefore recognized in a medical or clinical context. The readership of the journal closely reflects its multi-disciplinary contents, being a balance of scientists, engineers and clinicians. The contents are in the form of research papers, brief reports, review papers and correspondence, whilst special interest issues and supplements are published from time to time. Disciplines covered include biomechanics and mechanobiology at all scales, bioengineering and use of tissue engineering and biomaterials for clinical applications, biophysics, as well as biomechanical aspects of medical robotics, ergonomics, physical and occupational therapeutics and rehabilitation.