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Use of an enactive insole for reducing the risk of falling on different types of soil using vibrotactile cueing for the elderly

Otis Martin J.-D., Ayena Johannes C., Tremblay Louis E., Fortin Pascal E. et Ménélas Bob-Antoine-Jerry. (2016). Use of an enactive insole for reducing the risk of falling on different types of soil using vibrotactile cueing for the elderly. PLoS ONE, 11, (9), e0162107.

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URL officielle: http://dx.doi.org/10.1371/journal.pone.0162107

Résumé

Background

Our daily activities imply displacements on various types of soil. For persons with gait disorder or losing functional autonomy, walking on some types of soil could be challenging because of the risk of falling it represents.

Methods

In this paper, we present, in a first part, the use of an enactive shoe for an automatic differentiation of several types of soil. In a second part, using a second improved prototype (an enactive insole), twelve participants with Parkinson’s disease (PD) and nine age-matched controls have performed the Timed Up and Go (TUG) test on six types of soil with and without cueing. The frequency of the cueing was set at 10% above the cadence computed at the lower risk of falling (walking over the concrete). Depending on the cadence computed at the lower risk, the enactive insole activates a vibrotactile cueing aiming to improve gait and balance control. Finally, a risk index is computed using gait parameters in relation to given type of soil.

Results

The frequency analysis of the heel strike vibration allows the differentiation of various types of soil. The risk computed is associated to an appropriate rhythmic cueing in order to improve balance and gait impairment. The results show that a vibrotactile cueing could help to reduce the risk of falling.

Conclusions

Firstly, this paper demonstrates the feasibility of reducing the risk of falling while walking on different types of soil using vibrotactile cueing. We found a significant difference and a significant decrease in the computed risks of falling for most of types of soil especially for deformable soils which can lead to fall. Secondly, heel strike provides an approximation of the impulse response of the soil that can be analyzed with time and frequency-domain modeling. From these analyses, an index is computed enabling differentiation the types of soil.

Type de document:Article publié dans une revue avec comité d'évaluation
Volume:11
Numéro:9
Pages:e0162107
Version évaluée par les pairs:Oui
Date:7 Septembre 2016
Sujets:Sciences naturelles et génie > Génie > Génie électrique et génie électronique
Sciences de la santé > Sciences de l'activité physique et réadaptation > Physiothérapie
Département, module, service et unité de recherche:Départements et modules > Département d'informatique et de mathématique
Départements et modules > Département des sciences appliquées > Module d'ingénierie
Départements et modules > Département des sciences de la santé > Unité d'enseignement en physiothérapie
Mots-clés:Parkinson, marche, chutes
Déposé le:21 sept. 2016 00:18
Dernière modification:21 sept. 2016 00:18
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