Related Experiment Video
Updated: Sep 19, 2025
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Evaluating Postural Control and Lower-extremity Muscle Activation in Individuals with Chronic Ankle Instability
Published on: September 18, 2020
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Real-Time External Focus of Attention Biofeedback During a Forward Hop-To-Stabilization on Dynamic Postural Stability
Danielle M Torp1, Matthew C Hoch1, Kyle B Kosik1
1Department of Athletic Training and Clinical Nutrition, Sports Medicine Research Institute, University of Kentucky, Lexington, KY, USA.
Motor Control
|June 19, 2025
Summary
Real-time laser biofeedback did not significantly improve dynamic postural stability in individuals with chronic ankle instability during a hop-to-stabilization task. Further research is needed to optimize biofeedback strategies for this population.
Area of Science:
- Biomechanics
- Rehabilitation Science
- Sports Medicine
Background:
- Chronic ankle instability (CAI) commonly follows lateral ankle sprains, compromising postural stability during functional activities.
- External biofeedback presents a potential rehabilitation tool for enhancing movement, yet its efficacy in dynamic tasks for CAI populations requires further investigation.
Purpose of the Study:
- To evaluate the impact of real-time external laser biofeedback on dynamic postural stability indices.
- To assess these effects during a single-limb forward hop-to-stabilization task in individuals with CAI.
Main Methods:
- Eighteen participants with CAI performed hop-to-stabilization jumps with and without laser biofeedback applied to the tibia.
- Dynamic postural stability was measured using an inertial measurement unit capturing data for 5 seconds post-landing.
- Independent t-tests compared stability indices between conditions.
Main Results:
- No significant differences in dynamic postural stability were found between the biofeedback and no-biofeedback conditions.
- The use of real-time external laser biofeedback did not enhance performance in the hop-to-stabilization task for individuals with CAI.
Conclusions:
- Current real-time external laser biofeedback methods do not appear to improve dynamic postural stability in CAI during this specific task.
- Further research should explore optimal biofeedback tool placement, modality, and training duration to enhance dynamic postural stability in CAI populations.
