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A vibrotactile and plantar force measurement-based biofeedback system: Paving the way towards wearable balance-improving devices
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.
Interdisciplinary Division of Biomedical Engineering, The Hong Kong Polytechnic University, Hong Kong.
Interdisciplinary Division of Biomedical Engineering, The Hong Kong Polytechnic University, Hong Kong.
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2015 (English)In: Sensors, ISSN 1424-8220, E-ISSN 1424-8220, Vol. 15, no 12, p. 31709-31722Article in journal (Refereed) Published
Abstract [en]

Although biofeedback systems have been used to improve balance with success, they were confined to hospital training applications. Little attempt has been made to investigate the use of in-shoe plantar force measurement and wireless technology to turn hospital training biofeedback systems into wearable devices. This research developed a wearable biofeedback system which detects body sway by analyzing the plantar force and provides users with the corresponding haptic cues. The effects of this system were evaluated in thirty young and elderly subjects with simulated reduced foot sensation. Subjects performed a Romberg test under three conditions: (1) no socks, system turned-off; (2) wearing five layers of socks, system turned-off; (3) wearing five layers of socks, and system turned-on. Degree of body sway was investigated by computing the center of pressure (COP) movement measured by a floor-mounted force platform. Plantar tactile sensation was evaluated using a monofilament test. Wearing multiple socks significantly decreased the plantar tactile sensory input (p < 0.05), and increased the COP parameters (p < 0.017), indicating increased postural sway. After turning on the biofeedback system, the COP parameters decreased significantly (p < 0.017). The positive results of this study should inspire future development of wearable plantar force-based biofeedback systems for improving balance in people with sensory deficits. 

Place, publisher, year, edition, pages
MDPI, 2015. Vol. 15, no 12, p. 31709-31722
Keywords [en]
Balance, Biofeedback, Elderly, Falls, Plantar force measurement, Postural stability, Sensory augmentation, Wearable device, Balancing, Force measurement, Hospitals, Wearable technology, Wireless telecommunication systems, Sensory augmentations, Wearable devices, adult, aged, ambulatory monitoring, body equilibrium, clinical trial, devices, falling, female, foot, human, male, physiology, prevention and control, procedures, shoe, young adult, Accidental Falls, Biofeedback, Psychology, Humans, Monitoring, Ambulatory, Postural Balance, Shoes
National Category
Occupational Therapy Orthopaedics
Identifiers
URN: urn:nbn:se:hj:diva-42472DOI: 10.3390/s151229883ISI: 000367539100113PubMedID: 26694399Scopus ID: 2-s2.0-84949978723OAI: oai:DiVA.org:hj-42472DiVA, id: diva2:1276446
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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