Precise isometric hand grip learning of hemiparetic stroke patients
研究了恒定与可变练习方案对偏瘫脑卒中患者精确等长握力学习的影响，发现可变练习在保持和转移测试中表现更优，对康复训练有指导意义。
Rehabilitation of hand movements after stroke aims at skills that can be well retained and transferred to novel conditions. These functions may be altered by training schedules such as constant and variable practice. A total of 36 participants with hemiparesis completed one of these schedules counterbalanced. Precise isometric hand grip force production was practiced for 4 days with a target force of 25% maximum voluntary contraction. The constant group practiced only the target force, whereas the variable group practiced the same amount including ±5 and 10% maximum voluntary contraction. Target force presentation and feedback were provided visually. Results indicated that both practice schedule led to learning. Variable practice resulted in a superior performance in retention and transfer tests, suggesting that it may be effective not only in the healthy population but also in stroke rehabilitation.