Worse balance is associated with larger perturbation-evoked cortical responses in healthy young adults.
Aiden M Payne, Lena H Ting
PMID 32593102WHAT IT FOUND
Healthy young adults with worse balance on a beam-walking task showed larger brain responses to backward platform perturbations.
The link was strongest for large perturbations, suggesting greater cortical engagement when balance recovery is more difficult.
Key findings
01Worse beam-walking performance was associated with larger cortical N1 responses to perturbations.
02The association between balance difficulty and brain response size was driven by the larger, more challenging perturbations.
03Participants with the lowest balance ability showed a greater increase in brain response size as perturbation difficulty increased.
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
The study included only 20 healthy young adults, so it does not apply to older adults or people with balance disorders. The design is correlational, so it cannot prove that the brain response causes or results from balance difficulty. Balance ability was measured using a static beam-walking task, which is not a direct measure of reactive balance recovery.
Declared interests
The authors declared no financial or personal conflicts of interest.
The easy way to misread this
Do not assume that larger brain responses indicate a treatment target or a clinical deficit. This study measured healthy young adults and found an association, not a cause, and it did not test any intervention.