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Updated: Jun 17, 2026

Asymmetric Walkway: A Novel Behavioral Assay for Studying Asymmetric Locomotion

Asymmetric Walkway: A Novel Behavioral Assay for Studying Asymmetric Locomotion

Published on: January 15, 2016

Differences in self-selected and fastest-comfortable walking in post-stroke hemiparetic persons.

C B Beaman¹, C L Peterson, R R Neptune

¹Department of Mechanical Engineering, The University of Texas, Austin, TX 78712, USA.

|December 17, 2009

Summary

Walking speed significantly impacts post-stroke hemiparetic gait asymmetry. Analyzing symmetry at different speeds reveals individual compensatory strategies, but doesn't predict kinetic mechanisms for speed enhancement.

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Area of Science:

Biomechanics
Neurology
Rehabilitation

Background:

Post-stroke hemiparetic walking is characterized by asymmetry.
Gait symmetry assessment uses self-selected and fastest-comfortable speeds.
The influence of walking speed on gait asymmetry remains unclear.

Purpose of the Study:

To analyze relative changes in paretic and non-paretic leg symmetry.
To determine if one speed is more effective at highlighting hemiparetic gait asymmetries.
To investigate the systematic effect of walking speed on gait asymmetry.

Main Methods:

Forty-six subjects with chronic hemiparesis walked on an instrumented split-belt treadmill.
Gait parameters including step length (PSR) and propulsion (PP) symmetry were computed at self-selected and fastest-comfortable speeds.

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Joint moment impulses at the ankle and hip were analyzed.

Main Results:

Most subjects (36/46) showed no change in step length symmetry with speed.
Propulsion symmetry varied with speed across subjects; 15 increased asymmetry, 11 decreased it.
Neither step length nor propulsion symmetry correlated with ankle impulse proportions when speed ratios were considered.

Conclusions:

Walking speed affects gait asymmetry differently across individuals.
Neither step length nor propulsion symmetry consistently predicts underlying kinetic mechanisms for speed changes.
Further research is needed to understand individual kinetic adaptations during speed changes in hemiparetic gait.