Every year, almost 800,000 people experience a stroke in the United States, which lead to upper-limb impairments, making recovery of motor function a priority in stroke rehabilitation. 1) The primary objective of this study is to determine whether fast arm movement training on a tracking task ("Speed-training"), in chronic stroke survivors with mild to moderate paresis, will generalize to improve arm function better than dose-equivalent accuracy training on the same task. 2) study the effect of intensive arm training on the recovery of anticipatory feedforward control. 3) Determine the involvement of cerebellar-cortical circuits in the recovery of arm movements due to speed training.
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Change in arm reaching movement time.
Timeframe: Change from baseline to 3 days post-intervention
Change in movement smoothness
Timeframe: Change from baseline to 3 days post-intervention
Change in speed Accuracy Trade-off
Timeframe: Change from baseline to 3 days post-intervention
Change in arm reaching movement time.
Timeframe: Change from baseline to 1 month post-intervention
Change in movement smoothness
Timeframe: Change from baseline to 1 month post-intervention
Change in speed Accuracy Trade-off
Timeframe: Change from baseline to 1 month post-intervention