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Vibration of the whole foot soles surface using an inexpensive portable device to investigate age-related alterations of postural control

Lauzier Lydiane, Kadri Mohamed Abdelhafid, Bouchard Emilie, Bouchard Kévin, Gaboury Sébastien, Gagnon Jean-Michel, Girard Marie-Pier, Larouche Andréanne, Robert Roxane, Lapointe Patrick, da Silva Rubens Alexandre et Beaulieu Louis-David. (2021). Vibration of the whole foot soles surface using an inexpensive portable device to investigate age-related alterations of postural control. Frontiers in Human Neurosciences, 15, e719502.

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URL officielle: http://dx.doi.org/doi:10.3389/fnhum.2021.719502

Résumé

Background: Standing on a foam surface is used to investigate how aging affect the ability to keep balance when somatosensory inputs from feet soles become unreliable. However, since standing on foam also affects the efficacy of postural adjustments, the respective contributions of sensory and motor components are impossible to separate. This study tested the hypothesis that these components can be untangled by comparing changes of center of pressure (CoP) parameters induced by standing on a foam pad vs. a novel vibration (VIB) platform developed by our team and targeting feet soles' mechanoreceptors.

Methods: Bipedal postural control of young (n = 20) and healthy elders (n = 20) was assessed while standing barefoot on a force platform through 3 randomized conditions: (1) Baseline (BL); (2) VIB; and (3) Foam. CoP Amplitude and Velocity in the antero-posterior/medio-lateral (AP/ML) directions and COP Surface were compared between conditions and groups.

Findings: Both VIB and Foam increased CoP parameters compared to BL, but Foam had a significantly greater impact than VIB for both groups. Young and Old participants significantly differed for all three Conditions. However, when correcting for BL levels of postural performance, VIB-related increase of COP parameters was no longer different between groups, conversely to Foam.

Interpretation: Although both VIB and Foam highlighted age-related differences of postural control, their combined use revealed that "motor" and "sensory" components are differently affected by aging, the latter being relatively unaltered, at least in healthy/active elders. The combined used of these methods could provide relevant knowledge to better understand and manage postural impairments in the aging population.

Type de document:Article publié dans une revue avec comité d'évaluation
Volume:15
Pages:e719502
Version évaluée par les pairs:Oui
Date:10 Septembre 2021
Sujets:Sciences de la santé > Sciences de l'activité physique et réadaptation
Sciences de la santé > Sciences de l'activité physique et réadaptation > Physiothérapie
Département, module, service et unité de recherche:Départements et modules > Département des sciences de la santé > Programmes d'études de cycles supérieurs en sciences cliniques et biomédicales
Mots-clés:aging, cutaneous vibration, exteroception, foam surface, postural control, proprioception running title
Déposé le:20 oct. 2021 22:49
Dernière modification:20 oct. 2021 22:49
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