在裂带适应过程中实现步态对称是否反映脑卒中幸存者的皮质脊髓受累?

IF 2.1 3区 医学 Q3 NEUROSCIENCES
Journal of neurophysiology Pub Date : 2025-09-01 Epub Date: 2025-08-19 DOI:10.1152/jn.00626.2024
Keisuke Hirata, Hiroki Hanawa, Taku Miyazawa, Keisuke Kubota, Moeka Yokoyama, Naohiko Kanemura
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引用次数: 0

摘要

本研究探讨了卒中幸存者两种阶段类型的步态参数(即质心压力中心角度、步长和双支撑时间)与皮质脊髓活动之间的关系:晚期适应(LA)期间的最终对称性和从基线到LA的变化。22名中风幸存者参加了这项研究。步态适应评估采用三维运动分析和表面肌电图测量肌肉活动和运动模式。双侧胫骨前肌(TA)、比目鱼肌和腓肠肌内侧肌均有记录。测量双侧TA肌间β带的肌间一致性。在LA期重建CoM-CoP角度对称的中风幸存者表现出受影响和未受影响的TA信号之间的强烈相互依赖性,反映了神经协调能力的增强。这些发现表明,与步长或双支撑时间相比,CoM-CoP角对称的变化与神经步态控制机制的关系更为密切。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Does achieving gait symmetry during split-belt adaptation reflect corticospinal involvement in stroke survivors?

This study explored the relationship between gait parameters [i.e., center of mass-center of pressure (CoM-CoP) angle, step length, and double-support time] and corticospinal activity in stroke survivors across two phase types: final symmetry during late adaptation (LA) and changes from baseline to LA. Twenty-two stroke survivors participated in the study. Gait adaptation was assessed using three-dimensional motion analysis and surface electromyography to measure muscle activity and movement patterns. Recordings were obtained from the bilateral tibialis anterior (TA), soleus (SOL), and medial gastrocnemius (GAS) muscles. Intermuscular coherence in the beta band between the bilateral TA muscles was quantified. Stroke survivors who reestablished CoM-CoP angle symmetry during the LA phase exhibited strong interdependence between the affected and unaffected TA signals, reflecting enhanced neural coordination. These findings suggest that changes in CoM-CoP angle symmetry are more closely linked with neural gait control mechanisms than step length or double-support time.NEW & NOTEWORTHY This study highlights the significance of the center of mass-center of pressure (CoM-CoP) angle after adaptation as a parameter for assessing walking symmetry in stroke survivors. Our results suggest that CoM-CoP angle symmetry during gait adaptation tasks may reflect inhibitory mechanisms in the corticospinal tract. Moreover, this finding emphasizes the importance of precise temporal control of whole body movements for maintaining effective gait patterns.

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来源期刊
Journal of neurophysiology
Journal of neurophysiology 医学-神经科学
CiteScore
4.80
自引率
8.00%
发文量
255
审稿时长
2-3 weeks
期刊介绍: The Journal of Neurophysiology publishes original articles on the function of the nervous system. All levels of function are included, from the membrane and cell to systems and behavior. Experimental approaches include molecular neurobiology, cell culture and slice preparations, membrane physiology, developmental neurobiology, functional neuroanatomy, neurochemistry, neuropharmacology, systems electrophysiology, imaging and mapping techniques, and behavioral analysis. Experimental preparations may be invertebrate or vertebrate species, including humans. Theoretical studies are acceptable if they are tied closely to the interpretation of experimental data and elucidate principles of broad interest.
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