In robotics-aided rehabilitation, what does the principle of practice imply for therapy design?

• A. It implies reducing training intensity to avoid fatigue.
• B. It supports the use of high-frequency, repetitive tasks to drive motor recovery.
• C. It advocates replacing physical therapy with passive assistive devices.
• D. It indicates practice has no effect on recovery.

Answer: (B)

The principle of practice in robotics-aided rehabilitation is that repeated, high-frequency, task-specific practice drives motor learning and neuroplastic changes that support recovery. In therapy design, this means structuring sessions to provide many repetitions of meaningful, goal-directed movements, with the difficulty gradually advancing as the patient improves. Robotics helps by delivering consistent, intensive practice with adjustable assistance so the patient remains actively engaged, receives immediate feedback, and avoids unsafe or excessive fatigue. This repeated, purposeful practice is what reinforces correct movement patterns and helps reorganize motor pathways.

Reducing training intensity, using passive devices as a complete substitute for therapy, or believing practice has no effect would undermine the fundamental idea that repetition and targeted practice are essential for driving motor recovery.