Bilateral upper limb robot-assisted rehabilitation improves upper limb motor function in stroke patients: a study...

Area of Science:

• Neuroscience
• Rehabilitation Medicine
• Robotics

Background:

• Stroke-induced upper limb dysfunction significantly impacts patient quality of life.
• Bilateral training aids upper limb motor function recovery in stroke survivors.
• Limited research exists on bilateral upper limb robot-assisted training (BRT) effectiveness and its impact on quality of life.

Purpose of the Study:

• To evaluate the effectiveness of end-drive bilateral upper extremity robot-assisted training (BRT) on upper extremity functional recovery in stroke patients.
• To assess the impact of BRT on motor function, activities of daily living (ADL), and cerebral cortical activity using quantitative electroencephalography (EEG).

Main Methods:

• 24 stroke patients were randomly assigned to either conventional training (CT) or BRT groups.
• Both groups received 3 weeks of daily rehabilitation; BRT group added 30 min of robot-assisted bilateral upper limb training.
• Outcomes measured included Fugl-Meyer functional score upper limb component (FMA-UE), modified Barthel index (MBI) for ADL, and quantitative EEG for brain connectivity and power spectrum densities.

Main Results:

• Both groups showed significant within-group improvements in FMA-UE and MBI scores.
• The BRT group demonstrated significantly greater improvement in MBI scores compared to the CT group.
• BRT led to increased beta rhythm power spectrum energy and enhanced functional connectivity in alpha and beta rhythms within bilateral frontal and limbic lobes.

Conclusions:

• Bilateral upper limb robot-assisted training (BRT) is more effective than conventional training (CT) in improving activities of daily living (ADL) for stroke patients.
• BRT promotes upper limb functional recovery by enhancing functional connectivity in the bilateral cerebral hemispheres.