Validation of temporal gait metrics from three IMU locations to the gold standard force plate

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Title: Validation of temporal gait metrics from three IMU locations to the gold standard force plate
Authors: Patterson, MatthewJohnston, WilliamO'Mahony, NiamhCaulfield, Brianet al.
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Date: 20-Aug-2016
Online since: 2016-12-14T12:50:34Z
Abstract: The purpose of this work is to compare temporal gait parameters from three different IMU locations to the gold standard force platform. 33 subjects (12 F, 21 M) performed twenty gait trials each while wearing inertial measurement units (IMUs) on the trunk, both shanks and both feet. Data was simultaneously collected from a laboratory embedded force plate. Step times were derived from the raw IMU data at the three IMU locations using methods that have been shown to be accurate. Step times from all locations were valid compared to the force plate. Foot IMU step time was the most accurate (Pearson = .991, CI width = 3.00e2), the trunk IMU was the next most accurate (Pearson = .974, CI width = 4.85e2) and shank step time was the least accurate (Pearson = .958, CI width = 6.80e2). All three sensing locations result in valid estimations of step time compared to the gold standard force plate. These results suggest that the foot location would be most appropriate for clinical applications where very precise temporal parameter detection is required.
Funding Details: Science Foundation Ireland
Type of material: Conference Publication
Publisher: IEEE
Copyright (published version): 2016 IEEE
Keywords: Gait analysisBiomedical measurementForce sensors
DOI: 10.1109/EMBC.2016.7590790
Language: en
Status of Item: Peer reviewed
Conference Details: 2016 IEEE 38th Annual Conference of the Engineering in Medicine and Biology Society (EMBC), Orlando, Florida, USA, 16-20 August 2016
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