CONCLUSIONS:Both the Wii and task-specific training improved overall motor performance and balance. On other MABC-2 component scores, treatment effects differed between groups: Task-specific training had more pronounced effects on balance skills, while Wii training had slightly stronger treatment effects than task-specific training on manual dexterity. It was concluded that task-specific training affords stronger benefits for general motor skill than Wii-based training. Whether Wii training can promote clinically significant benefits for upper-limb function remains to be seen.