Effect of Virtual Reality-based Bilateral Upper Extremity Training on Upper Extremity Function after Stroke: A...

Area of Science:

• Neurorehabilitation
• Physical Therapy
• Biomedical Engineering

Background:

• Stroke survivors often experience upper limb paresis, impacting daily activities.
• Restoring motor function and muscle strength is crucial for post-stroke recovery.
• Traditional therapies may have limitations in engaging patients and optimizing motor learning.

Purpose of the Study:

• To investigate the efficacy of virtual reality-based bilateral upper extremity training (VRBT) versus conventional bilateral training (BT) in stroke patients.
• To assess the impact of VRBT on paretic upper limb function and muscle strength.

Main Methods:

• Eighteen stroke survivors were randomized into VRBT (n=10) or BT (n=8) groups.
• Both groups trained for 30 minutes/day, 3 days/week for 6 weeks.
• Upper extremity function and hand strength were assessed using standardized tests (Box and Block, Jebsen Hand Function, Grooved Pegboard).

Main Results:

• The VRBT group showed significantly greater improvements in upper extremity function and muscle strength compared to the BT group (p < 0.05).
• Significant improvements were observed in hand strength (elbow flexion/extension, grip, pinch) and function (Box and Block, Jebsen, Grooved Pegboard) in the VRBT group.
• Analysis revealed significant group, time, and group-by-time interaction effects favoring VRBT.

Conclusions:

• Virtual reality-based bilateral upper extremity training is a feasible and effective intervention for stroke survivors.
• VRBT demonstrates superior outcomes in enhancing upper limb function and muscle strength post-stroke.
• This technology offers a promising avenue for improving rehabilitation strategies and patient outcomes.