Characterization of Reactions to Laterally Directed Perturbations in People With Chronic Stroke
Characterization of Reactions to Laterally Directed Perturbations in People With Chronic Stroke
复制标题
慢性中风患者对横向扰动的反应特征
作者：
A. Schinkel;A. Aqui;C. Danells;A. Mansfield
背景反应性平衡控制通常在中风后受损。目前缺乏针对这一人群对横向扰动的反应的研究。鉴于中风相关的运动障碍是单侧的，更好地理解对这些类型的扰动的反应性平衡反应至关重要。Objective.本研究旨在量化慢性卒中患者对侧向扰动反应性平衡控制的差异，基于扰动方向和用任一肢体迈步的能力。设计本研究采用横断面设计。方法.根据基线评估中反应性平衡任务的表现，将患有慢性卒中的参与者（N = 19）分成代表其用任一肢体行走的能力的组。在评估过程中还确定了首选的踏步肢。然后，每个参与者在运动平台上经历了一系列横向扰动。平台方向和组之间的行为措施进行了比较。结果与非首选肢体相比，使用额外步骤、使用首选肢体的步骤启动和交叉步骤的试验更常见于平台朝向首选肢体的运动;后一种效果仅在使用任一肢体的能力受损的参与者中观察到。侧步序列更常见于当平台向首选肢体移动时能够用任一肢体迈步的患者。局限性。由于设备的限制，参与者样本的功能可能高于卒中幸存者的一般人群。此外，参与者可能已经制定了使用平台的运动特性来帮助平衡恢复的策略。结论.这些研究结果提供了一个指示的反应，横向定向扰动慢性中风的人，并可能有助于通知策略，以改善反应性平衡控制中风康复。
Background. Reactive balance control is often impaired poststroke. Studies addressing responses to laterally directed perturbations in this population are currently lacking. Given that stroke‐related motor impairments are unilateral, a better understanding of reactive balance responses to these types of perturbations is critical. Objective. This study aimed to quantify differences in reactive balance control in response to laterally directed perturbations in people with chronic stroke, based on perturbation direction and ability to step with either limb. Design. This study used a cross‐sectional design. Methods. Participants with chronic stroke (N = 19) were divided into groups representing their ability to step with either limb, based on performance on a reactive balance task in a baseline assessment. The preferred stepping limb was also identified during this assessment. Each participant then underwent a series of laterally directed perturbations on a motion platform. Behavioral measures were compared between platform direction and group. Results. Trials with extra steps, step initiation with the preferred limb, and crossover steps were more common with platform motion toward the preferred limb compared to the nonpreferred limb; the latter effect was only observed for participants with an impaired ability to step with either limb. Side‐step sequences were more common in those able to step with either limb when the platform moved toward the preferred limb. Limitations. The participant sample was likely higher functioning than the general population of stroke survivors due to equipment constraints. Additionally, participants may have developed strategies to use the platform's motion characteristics to aid with balance recovery. Conclusions. These findings provide an indication of responses to laterally directed perturbations in people with chronic stroke and may help inform strategies for improving reactive balance control during stroke rehabilitation.
分析相关数据、聚类数据或重复测量时避免出现错误。
DOI：
10.3899/jrheum.2022-1109
发表时间：
2023
期刊：
The Journal of rheumatology
影响因子：
--
作者：
Chang,Yu-HuiH;Buras,MatthewR;Davis3rd,JohnM;Crowson,CynthiaS
通讯作者：
Crowson,CynthiaS
DOI：
10.1016/j.apmr.2007.11.017
发表时间：
2008-03-01
影响因子：
4.3
作者：
King, Laurie A.;Horak, Fay B.
通讯作者：
Horak, Fay B.