@article{ref1,
title="Analysis of choice stepping with visual interference can detect prolonged postural preparation in older adults with mild cognitive impairment at high risk of falling",
journal="Dementia and geriatric cognitive disorders",
year="2015",
author="Uemura, Kazuki and Hasegawa, Takashi and Tougou, Hiroki and Shuhei, Takahashi and Uchiyama, Yasushi",
volume="40",
number="1-2",
pages="13-21",
abstract="BACKGROUND/AIMS: We aimed to clarify postural control deficits in older adults with mild cognitive impairment (MCI) at high risk of falling by addressing the inhibitory process. <br><br>METHODS: This study involved 376 community-dwelling older adults with MCI. Participants were instructed to execute forward stepping on the side indicated by the central arrow while ignoring the 2 flanking arrows on each side (→→→→→, congruent, or →→←→→, incongruent). Initial weight transfer direction errors [anticipatory postural adjustment (APA) errors], step execution times, and divided phases (reaction, APA, and swing phases) were measured from vertical force data. Participants were categorized as fallers (n = 37) and non-fallers (n = 339) based on fall experiences in the last 12 months. <br><br>RESULTS: There were no differences in the step execution times, swing phases, step error rates, and APA error rates between groups, but fallers had a significantly longer APA phase relative to non-fallers in trials of the incongruent condition with APA errors (p = 0.005). Fallers also had a longer reaction phase in trials with the correct APA, regardless of the condition (p = 0.01). <br><br>CONCLUSION: Analyses of choice stepping with visual interference can detect prolonged postural preparation as a specific falling-associated deficit in older adults with MCI. © 2015 S. Karger AG, Basel.<p /> <p>Language: en</p>",
language="en",
issn="1420-8008",
doi="10.1159/000375408",
url="http://dx.doi.org/10.1159/000375408"
}