Errors in Postural Preparation Lead to Increased Choice Reaction Times for Step Initiation in Older Adults

摘要

Background.This study asked whether older adults were more likely than younger adults to err in the initial direction of their anticipatory postural adjustment (APA) prior to a step (indicating a motor program error), whether initial motor program errors accounted for reaction time differences for step initiation, and whether initial motor program errors were linked to inhibitory failure.