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Using a Split-belt Treadmill to Evaluate Generalization of Human Locomotor Adaptation
Published on: August 23, 2017
Compensatory balance reactions during forward and backward walking on a treadmill
1Centre for Neuroscience, University of Alberta, Canada.
Gait & Posture
|January 10, 2012
Summary
Backward balance perturbations caused larger body reactions than expected, regardless of walking direction. This challenges previous assumptions about how the body corrects for instability during locomotion.
Area of Science:
- Biomechanics
- Human locomotion
- Balance control
Background:
- Previous research indicated opposing perturbations elicit greater balance reactions.
- Understanding corrective responses is crucial for gait stability.
Purpose of the Study:
- To investigate the effect of perturbation direction on balance reactions during walking.
- To test the hypothesis that opposing perturbations cause larger corrective responses.
Main Methods:
- Subjects walked forwards and backwards on a treadmill.
- Forward and backward pelvic perturbations were applied via a harness.
- Balance reactions were measured during perturbed walking.
Main Results:
- Backward perturbations consistently elicited the greatest amplitude corrective reactions.
- This effect was observed irrespective of the direction of walking (forward or backward).
- Results contradicted the initial hypothesis.
Conclusions:
- The direction of perturbation, specifically backward, significantly influences the magnitude of balance reactions.
- Locomotion stability may be more sensitive to backward-directed instability than previously thought.
