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Updated: Apr 1, 2026

Author Spotlight: Enhancing Post-Stroke Upper Limb Rehabilitation with Robotic Technologies for Improved Motor Recovery and Functional Outcomes
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Robot-Assisted Reach Training for Improving Upper Extremity Function of Chronic Stroke.

Ki Hun Cho1, Won-Kyung Song

  • 1Department of Rehabilitative and Assistive Technology, Korea National Rehabilitation Research Institute, Korea National Rehabilitation Center.

The Tohoku Journal of Experimental Medicine
|October 14, 2015
PubMed
Summary

Robot-assisted reach training using a whole arm manipulator (WAM) significantly improved upper extremity function in chronic stroke survivors. This short-term intervention enhanced both kinematic performance and functional movement, aiding daily living activities.

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Area of Science:

  • Rehabilitation robotics
  • Neurorehabilitation
  • Biomechanics

Background:

  • Stroke frequently causes chronic upper limb dysfunction, limiting daily activities.
  • Robotic devices offer a promising avenue for enhancing upper extremity function post-stroke.

Purpose of the Study:

  • To evaluate the efficacy of a robot-assisted reach training program using a whole arm manipulator (WAM) in chronic stroke patients.
  • To assess improvements in upper extremity kinematic performance and functional movement.

Main Methods:

  • A single-group study involving 10 chronic stroke participants.
  • Utilized a 7-degree-of-freedom WAM for robot-assisted reach exercises over 4 weeks (2 sessions/week, 40 min/session).
  • Measured upper extremity kinematic performance (movement velocity) and functional movement (Action Research Arm Test) at baseline, 2 weeks, and post-intervention.

Main Results:

  • Significant improvements in upper extremity kinematic performance were observed after 2 and 4 weeks of training compared to baseline (P < 0.05).
  • Functional movement, assessed by the Action Research Arm Test, also showed significant improvement at 2 and 4 weeks (P < 0.05).

Conclusions:

  • Short-term robot-assisted reach training with a WAM positively impacts upper extremity kinematic performance and functional movement in chronic stroke survivors.
  • Findings support the use of robotic interventions for stroke rehabilitation and provide data for future randomized controlled trials.