Within-session propulsion asymmetry changes have a limited effect on gait asymmetry post-stroke.
Sarah A Kettlety, James M Finley, Kristan A Leech
PMID 39844188WHAT IT FOUND
Increasing paretic propulsion with biofeedback reduced propulsion asymmetry but did not significantly improve overall gait asymmetry.
Clinicians should not expect single-limb propulsion training to automatically normalize the entire walking pattern.
Key findings
01Biofeedback successfully increased paretic propulsion and reduced propulsion asymmetry in the group.
02Changes in propulsion asymmetry were associated with very limited changes in overall gait asymmetry (CGAM).
03Baseline propulsion asymmetry was not associated with baseline overall gait asymmetry.
STILL TO COME
How it was doneWhat they foundWhat it means for PTsWhat it means for OTsWhat it means for SLPs
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What it does not show
This was a single-session study; it does not show whether long-term training might eventually alter overall gait symmetry. The biofeedback goal was challenging, with participants hitting the target on only 36% of strides. Propulsion timing was not controlled, which may have influenced the lack of effect on overall symmetry. Muscle activity (EMG) was not measured, so it is unclear if compensatory muscle recruitment prevented symmetry improvements.
Declared interests
Funded by the National Institutes of Health and the Foundation for Physical Therapy Research. No other conflicts of interest were reported.
The easy way to misread this
Do not conclude that propulsion biofeedback is ineffective for gait. The study shows it does not automatically fix *overall* symmetry in one session, but propulsion is still a key driver of walking speed and may require combined interventions to improve the whole gait pattern.