Visual feedback training improves postural adjustments associated with moving obstacle avoidance in elderly women

V. Hatzitaki, D. Voudouris, T. Nikodelis, I.G. Amiridis

    Research output: Contribution to JournalArticleAcademicpeer-review

    Abstract

    The study examined the impact of visually guided weight shifting (WS) practice on the postural adjustments evoked by elderly women when avoiding collision with a moving obstacle while standing. Fifty-six healthy elderly women (70.9 ± 5.7 years, 87.5 ± 9.6 kg) were randomly assigned into one of three groups: a group that completed 12 sessions (25 min, 3 s/week) of WS practice in the Anterior/Posterior direction (A/P group, n = 20), a group that performed the same practice in the medio/lateral direction (M/L group, n = 20) and a control group (n = 16). Pre- and post-training, participants were tested in a moving obstacle avoidance task. As a result of practice, postural response onset shifted closer to the time of collision with the obstacle. Side-to-side WS resulted in a reduction of the M/L sway amplitude and an increase of the trunk's velocity during avoidance. It is concluded that visually guided WS practice enhances elderly's ability for on-line visuo-motor processing when avoiding collision eliminating reliance on anticipatory scaling. Specifying the direction of WS seems to be critical for optimizing the transfer of training adaptations. © 2008 Elsevier B.V. All rights reserved.
    Original languageEnglish
    JournalGait and Posture
    DOIs
    Publication statusPublished - 2009

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