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A wearable vibrotactile biofeedback system improves balance control of healthy young adults following perturbations from quiet stance
Interdisciplinary Division of Biomedical Engineering, The Hong Kong Polytechnic University, Hong Kong.ORCID iD: 0000-0001-6507-2329
Interdisciplinary Division of Biomedical Engineering, The Hong Kong Polytechnic University, Hong Kong.
2017 (English)In: Human Movement Science, ISSN 0167-9457, E-ISSN 1872-7646, Vol. 55, p. 54-60Article in journal (Refereed) Published
Abstract [en]

Maintaining postural equilibrium requires fast reactions and constant adjustments of the center of mass (CoM) position to prevent falls, especially when there is a sudden perturbation of the support surface. During this study, a newly developed wearable feedback system provided immediate vibrotactile clues to users based on plantar force measurement, in an attempt to reduce reaction time and CoM displacement in response to a perturbation of the floor. Ten healthy young adults participated in this study. They stood on a support surface, which suddenly moved in one of four horizontal directions (forward, backward, left and right), with the biofeedback system turned on or off. The testing sequence of the four perturbation directions and the two system conditions (turned on or off) was randomized. The resulting reaction time and CoM displacement were analysed. Results showed that the vibrotactile feedback system significantly improved balance control during translational perturbations. The positive results of this preliminary study highlight the potential of a plantar force measurement based biofeedback system in improving balance under perturbations of the support surface. Future system optimizations could facilitate its application in fall prevention in real life conditions, such as standing in buses or trains that suddenly decelerate or accelerate. 

Place, publisher, year, edition, pages
Elsevier, 2017. Vol. 55, p. 54-60
Keywords [en]
Balance, Center of mass displacement, Perturbation, Reaction time, Vibrotactile biofeedback system, Wearable device, adult, biofeedback, clinical article, controlled clinical trial, controlled study, female, human, male, normal human, randomized controlled trial, standing, young adult, ambulatory care, body equilibrium, body position, devices, physiology, procedures, therapeutic use, vibration, Biofeedback, Psychology, Healthy Volunteers, Humans, Postural Balance, Posture
National Category
Occupational Therapy Orthopaedics
Identifiers
URN: urn:nbn:se:hj:diva-42468DOI: 10.1016/j.humov.2017.07.006ISI: 000413390800006PubMedID: 28763702Scopus ID: 2-s2.0-85026395252OAI: oai:DiVA.org:hj-42468DiVA, id: diva2:1276523
Available from: 2019-01-08 Created: 2019-01-08 Last updated: 2019-02-28Bibliographically approved

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Ma, Christina Zong-Hao

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