Robot-Assisted Reach Training With an Active Assistant Protocol for Long-Term Upper Extremity Impairment Poststroke:...

Area of Science:

• Neurorehabilitation
• Robotics in Medicine
• Biomechanics

Background:

• Stroke survivors often experience impaired upper extremity function.
• Robot-assisted therapy offers a potential avenue for rehabilitation.

Purpose of the Study:

• To evaluate the efficacy of robot-assisted reach training (RART) using an active assistant protocol.
• To compare an assist-as-needed (RT-AAN) mode with a guidance force (RT-G) mode in chronic stroke survivors.

Main Methods:

• A randomized controlled trial was conducted with 38 chronic stroke survivors.
• Participants were assigned to either the RT-AAN group or the RT-G group for a 6-week period.
• Upper extremity function was assessed using Fugl-Meyer Assessment (FMA), Action Research Arm Test (ARAT), and kinematic performance was measured via movement velocities.

Main Results:

• Both groups demonstrated significant improvements in upper extremity function and kinematic performance.
• The RT-AAN group exhibited significantly greater improvements in FMA and ARAT scores compared to the RT-G group.

Conclusions:

• Robot-assisted reach training with an active assistant protocol effectively enhances upper extremity function and kinematics in chronic stroke survivors.
• The assist-as-needed robot control mode appears particularly effective for upper extremity rehabilitation.