TY - JOUR
T1 - Visual feedback training improves postural adjustments associated with moving obstacle avoidance in elderly women
AU - Hatzitaki, V.
AU - Voudouris, D.
AU - Nikodelis, T.
AU - Amiridis, I.G.
PY - 2009
Y1 - 2009
N2 - 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.
AB - 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.
U2 - 10.1016/j.gaitpost.2008.09.011
DO - 10.1016/j.gaitpost.2008.09.011
M3 - Article
JO - Gait and Posture
JF - Gait and Posture
SN - 0966-6362
ER -