Improving Upper-Limb Recovery in Patients with Chronic Stroke Using an 8-Week Bilateral Arm-Training Device

Area of Science:

• Neurorehabilitation
• Biomedical Engineering
• Physical Therapy

Background:

• Upper-limb impairments post-stroke significantly reduce quality of life.
• Effective rehabilitation strategies are crucial for motor recovery.
• Bilateral arm-training devices offer potential for enhanced therapeutic outcomes.

Purpose of the Study:

• To evaluate the efficacy of the Arm Booster, a bilateral arm-training device.
• To assess its impact on upper-limb impairment in chronic stroke patients.
• To compare its effects against conventional physiotherapy.

Main Methods:

• Eighteen participants with chronic stroke were randomized into a device group (Arm Booster) or conventional physiotherapy group.
• Both groups underwent 8 weeks of supervised bilateral upper-limb exercises (3 sessions/week).
• Outcomes measured included motor impairment (Fugl-Meyer Assessment of the Upper Extremity - FMA-UE), spasticity (Modified Ashworth Scale - MAS), and functional arm use (Motor Activity Log - MAL).

Main Results:

• Both groups demonstrated significant improvements in FMA-UE scores and overall arm movement.
• The conventional physiotherapy group showed additional gains in hand/wrist function and coordination.
• The Arm Booster group, particularly in the moderate-to-severe spasticity subgroup, showed improved upper-limb movement and a trend toward reduced spasticity.

Conclusions:

• The Arm Booster may support motor recovery and encourage affected arm use in stroke survivors.
• The device appears to improve movement control and offers an efficient method for independent, frequent exercise.
• Findings suggest the Arm Booster as a valuable adjunct in upper-limb rehabilitation post-stroke.