University of West Paulista-UNOESTE-Presidente Prudente, SP, Brazil.
São Paulo State University (Unesp) "Júlio de Mesquita Filho"-Presidente Prudente, SP, Brazil.
Biomed Res Int. 2020 Jul 22;2020:2937285. doi: 10.1155/2020/2937285. eCollection 2020.
Sensory and motor alterations resulting from stroke often impair the performance and learning of motor skills. The present study is aimed at investigating whether and how poststroke individuals and age- and sex-matched healthy controls benefit from a contextual interference effect on the practice of a maze task (i.e., constant random practice) performed on the computer.
Participants included 21 poststroke individuals and 21 healthy controls, matched by sex and age (30 to 80 years). Both groups were divided according to the type of the practice (constant or random) presented in the acquisition phase of the learning protocol. For comparison between the groups, types of practice, and blocks of attempts, the analysis of variance with Tukey's post hoc test ( < 0.05) was used.
Poststroke individuals presented longer movement times as compared with the control group. In addition, only poststroke individuals who performed the task with random practice showed improved performance at the transfer phase. Moreover, randomized practice enabled poststroke individuals to perform the transfer task similarly to individuals without any neurological impairment.
The present findings indicated a significant effect of contextual interference of practice in poststroke individuals, suggesting that applying randomized training must be considered when designing rehabilitation protocols for this population.
中风引起的感觉和运动改变常影响运动技能的表现和学习。本研究旨在探讨中风患者和年龄、性别匹配的健康对照者是否以及如何受益于在计算机上进行的迷宫任务（即，恒定-随机练习）练习中的情境干扰效应。
参与者包括 21 名中风患者和 21 名健康对照者，按性别和年龄（30 至 80 岁）匹配。两组均根据学习方案获得阶段呈现的练习类型（恒定或随机）进行分组。为了在组间、练习类型和尝试块之间进行比较，使用方差分析和 Tukey 事后检验（<0.05）。
中风患者的运动时间明显长于对照组。此外，只有进行随机练习的中风患者在转移阶段表现出了更好的表现。此外，随机练习使中风患者能够在转移任务中表现得与没有任何神经损伤的个体相似。
本研究结果表明，练习中的情境干扰对中风患者有显著影响，这表明在为该人群设计康复方案时，必须考虑随机训练。
