Related Experiment Video
Updated: Feb 20, 2026
The Impact of Motor Task Conditions on Goal-Directed Arm Reaching Kinematics and Trunk Compensation in Chronic Stroke Survivors
Published on: May 2, 2021
Biofeedback vs. game scores for reducing trunk compensation after stroke: a randomized crossover trial
Bulmaro A Valdés1, H F Machiel Van der Loos1
1a RREACH (Robotics for Rehabilitation Exercise and Assessment in Collaborative Healthcare) Lab, Department of Mechanical Engineering , The University of British Columbia , Vancouver , Canada.
Stroke survivors using multimodal feedback, including scores, visuals, and force, reduced trunk compensation during reaching tasks. This technology-based approach shows promise for improving motor recovery without significant differences between feedback types.
Area of Science:
- Rehabilitation robotics
- Neurorehabilitation
- Motor control in stroke survivors
Background:
- Compensatory movements in stroke survivors can hinder motor recovery.
- Current methods to reduce trunk compensation, like physical restraint, are limited.
- Technological interventions for trunk compensation are under-explored.
Purpose of the Study:
- To compare the efficacy of Scores + Visual + Force feedback versus Visual + Force feedback in reducing trunk compensation.
- To evaluate the impact of multimodal feedback on motor recovery in hemiparetic stroke survivors.
Main Methods:
- Fourteen stroke survivors performed bimanual reaching tasks using robotic arms.
- Trunk compensation was monitored using motion tracking and reduced via multimodal feedback (Scores, Visual, Force).
- Kinematic data, questionnaires, and system usability were analyzed.
Main Results:
- Both feedback conditions significantly reduced trunk compensation from baseline.
- No significant difference in trunk compensation reduction was observed between the Scores + Visual + Force and Visual + Force conditions.
- Secondary outcome measures did not show improvement; system usability was rated as 'Good'.
Conclusions:
- Multimodal feedback effectively reduces trunk displacement in stroke survivors during reaching tasks.
- The inclusion of game scores may require longer intervention periods to demonstrate significant benefits.
- Further research is needed to compare technology-based feedback with traditional trunk restraint methods.
