使用跑步机皮带加速度进行基于扰动的平衡训练的神经肌肉适应性不会转移到老年人的障碍行程中:交叉随机对照试验

IF 1.6 3区 心理学 Q4 NEUROSCIENCES Human Movement Science Pub Date : 2024-08-31 DOI:10.1016/j.humov.2024.103273
Steven Phu , Daina L. Sturnieks , Patrick Y.H. Song , Stephen R. Lord , Yoshiro Okubo
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引用次数: 0

摘要

背景本研究考察了(i)使用跑步机皮带加速或使用步行道行程进行基于扰动的平衡训练(PBT)后肌肉活动的适应性,以及(ii)跑步机PBT期间的适应性是否会转移到步行道行程。方法38名老年人(65岁以上)进行了两次PBT训练,包括11次跑步机皮带加速和11次步行道行程。在第一次(T1)和第十一次(T11)扰动时,测量了双侧股直肌(RF)、胫骨前肌(TA)、半腱肌(ST)和腓肠肌内侧头(GM)的表面肌电图(EMG)。对 EMG 参数的适应(受试者内--跑步机和人行道 PBT 的第 1 次扰动与第 11 次扰动)及其转移(受试者间--跑步机 PBT 后的第 1 次人行道行程与事先未接受训练的第 1 次人行道行程)效应进行了研究。结果跑步机 PBT 降低了扰动后肌肉激活峰值幅度(左侧 RF、TA、ST,右侧 RF、ST、GM)、起始潜伏期(右侧 TA)、达到峰值的时间(右侧 RF)和共收缩指数(膝关节肌肉)(P < 0.05)。徒步跑步机运动减少了行程后的起始潜伏期(右 TA、ST)、峰值幅度(左 ST、右 GM)、达到峰值的时间(右 RF、ST)和扰动前的肌肉活动(右 TA)(P < 0.05)。结论跑步机和走步训练都能诱导负责第一个恢复步的右肢肌肉提前启动并达到激活峰值。跑步机 PBT 还减少了膝关节肌肉的共收缩。跑步机 PBT 后肌肉活动的适应并未转移到步行路程中。
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Neuromuscular adaptations to perturbation-based balance training using treadmill belt accelerations do not transfer to an obstacle trip in older people: A cross-over randomised controlled trial

Background

This study examined (i) adaptations in muscle activity following perturbation-based balance training (PBT) using treadmill belt-accelerations or PBT using walkway trips and (ii) whether adaptations during treadmill PBT transfer to a walkway trip.

Methods

Thirty-eight older people (65+ years) undertook two PBT sessions, including 11 treadmill belt-accelerations and 11 walkway trips. Surface electromyography (EMG) was measured bilaterally on the rectus femoris (RF), tibialis anterior (TA), semitendinosus (ST) and gastrocnemius medial head (GM) during the first (T1) and eleventh (T11) perturbations. Adaptations (within-subjects - 1st vs 11th perturbations for treadmill and walkway PBT) and their transfer (between-subjects – 1st walkway trip after treadmill PBT vs 1st walkway trip with no prior training) effects were examined for the EMG parameters.

Results

Treadmill PBT reduced post-perturbation peak muscle activation magnitude (left RF, TA, ST, right RF, ST, GM), onset latency (right TA), time to peak (right RF) and co-contraction index (knee muscles) (P < 0.05). Walkway PBT reduced post-trip onset latencies (right TA, ST), peak magnitude (left ST, right GM), time to peak (right RF, ST) and pre-perturbation muscle activity (right TA) (P < 0.05). Those who undertook treadmill PBT were not different to those without prior training during the first walkway trip (P > 0.05).

Conclusions

Both treadmill and walkway PBT induced earlier initiation and peak activation of right limb muscles responsible for the first recovery step. Treadmill PBT also reduced co-contraction of the knee muscles. Adaptations in muscle activity following treadmill PBT did not transfer to a walkway trip.

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来源期刊
Human Movement Science
Human Movement Science 医学-神经科学
CiteScore
3.80
自引率
4.80%
发文量
89
审稿时长
42 days
期刊介绍: Human Movement Science provides a medium for publishing disciplinary and multidisciplinary studies on human movement. It brings together psychological, biomechanical and neurophysiological research on the control, organization and learning of human movement, including the perceptual support of movement. The overarching goal of the journal is to publish articles that help advance theoretical understanding of the control and organization of human movement, as well as changes therein as a function of development, learning and rehabilitation. The nature of the research reported may vary from fundamental theoretical or empirical studies to more applied studies in the fields of, for example, sport, dance and rehabilitation with the proviso that all studies have a distinct theoretical bearing. Also, reviews and meta-studies advancing the understanding of human movement are welcome. These aims and scope imply that purely descriptive studies are not acceptable, while methodological articles are only acceptable if the methodology in question opens up new vistas in understanding the control and organization of human movement. The same holds for articles on exercise physiology, which in general are not supported, unless they speak to the control and organization of human movement. In general, it is required that the theoretical message of articles published in Human Movement Science is, to a certain extent, innovative and not dismissible as just "more of the same."
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