Bate P J, Matyas T A
Department of Physiotherapy, La Trobe University, Victoria, Australia.
Arch Phys Med Rehabil. 1992 Nov;73(11):1050-8.
This study aimed to overcome gaps in the literature by investigating effects of EMG feedback provided specifically from spastic muscles during antagonist phases of active movement, while controlling for the effects of practicing the movement and while testing for transfer of training without confounding several transfer phenomena. In a single training session, two groups of stroke patients practiced a pursuit tracking task by following a moving target with elbow flexion and extension, simultaneously attempting to reduce the activity of elbow flexors. Both groups tracked the target more accurately following training. Transfer tests failed to demonstrate effects of feedback on accuracy of tracking or on electromyographic activity during performance of the practiced task without feedback. Moreover, the group that was trained with electromyographic feedback exhibited negative transfer on variants of the practiced task: tracking faster or less predictable targets.
本研究旨在通过调查在主动运动的拮抗阶段专门由痉挛肌肉提供的肌电图反馈的效果来填补文献中的空白，同时控制练习运动的效果，并在测试训练迁移时不混淆几种迁移现象。在一次训练中，两组中风患者通过用肘部屈伸跟踪移动目标来练习追踪任务，同时试图降低肘部屈肌的活动。两组在训练后跟踪目标都更准确。迁移测试未能证明反馈对无反馈情况下执行练习任务时的跟踪准确性或肌电活动有影响。此外，接受肌电图反馈训练的组在练习任务的变体上表现出负迁移：跟踪更快或更不可预测的目标。
