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Ground Contact Time Estimating Wearable Sensor to Measure Spatio-Temporal Aspects of Gait

Inpatient gait analysis is an essential part of rehabilitation for foot amputees and includes the ground contact time (GCT) difference of both legs as an essential component. Doctors communicate improvement advice to patients regarding their gait pattern based on a few steps taken at the doctor’s vi...

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Autores principales: Bernhart, Severin, Kranzinger, Stefan, Berger, Alexander, Peternell, Gerfried
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9099479/
https://www.ncbi.nlm.nih.gov/pubmed/35590822
http://dx.doi.org/10.3390/s22093132
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author Bernhart, Severin
Kranzinger, Stefan
Berger, Alexander
Peternell, Gerfried
author_facet Bernhart, Severin
Kranzinger, Stefan
Berger, Alexander
Peternell, Gerfried
author_sort Bernhart, Severin
collection PubMed
description Inpatient gait analysis is an essential part of rehabilitation for foot amputees and includes the ground contact time (GCT) difference of both legs as an essential component. Doctors communicate improvement advice to patients regarding their gait pattern based on a few steps taken at the doctor’s visit. A wearable sensor system, called Suralis, consisting of an inertial measurement unit (IMU) and a pressure measuring sock, including algorithms calculating GCT, is presented. Two data acquisitions were conducted to implement and validate initial contact (IC) and toe-off (TO) event detection algorithms as the basis for the GCT difference determination for able-bodied and prosthesis wearers. The results of the algorithms show a median GCT error of −51.7 ms (IMU) and 14.7 ms (sensor sock) compared to the ground truth and thus represent a suitable possibility for wearable gait analysis. The wearable system presented, therefore, enables a continuous feedback system for patients and, above all, a remote diagnosis of spatio-temporal aspects of gait behaviour based on reliable data collected in everyday life.
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spelling pubmed-90994792022-05-14 Ground Contact Time Estimating Wearable Sensor to Measure Spatio-Temporal Aspects of Gait Bernhart, Severin Kranzinger, Stefan Berger, Alexander Peternell, Gerfried Sensors (Basel) Article Inpatient gait analysis is an essential part of rehabilitation for foot amputees and includes the ground contact time (GCT) difference of both legs as an essential component. Doctors communicate improvement advice to patients regarding their gait pattern based on a few steps taken at the doctor’s visit. A wearable sensor system, called Suralis, consisting of an inertial measurement unit (IMU) and a pressure measuring sock, including algorithms calculating GCT, is presented. Two data acquisitions were conducted to implement and validate initial contact (IC) and toe-off (TO) event detection algorithms as the basis for the GCT difference determination for able-bodied and prosthesis wearers. The results of the algorithms show a median GCT error of −51.7 ms (IMU) and 14.7 ms (sensor sock) compared to the ground truth and thus represent a suitable possibility for wearable gait analysis. The wearable system presented, therefore, enables a continuous feedback system for patients and, above all, a remote diagnosis of spatio-temporal aspects of gait behaviour based on reliable data collected in everyday life. MDPI 2022-04-20 /pmc/articles/PMC9099479/ /pubmed/35590822 http://dx.doi.org/10.3390/s22093132 Text en © 2022 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Bernhart, Severin
Kranzinger, Stefan
Berger, Alexander
Peternell, Gerfried
Ground Contact Time Estimating Wearable Sensor to Measure Spatio-Temporal Aspects of Gait
title Ground Contact Time Estimating Wearable Sensor to Measure Spatio-Temporal Aspects of Gait
title_full Ground Contact Time Estimating Wearable Sensor to Measure Spatio-Temporal Aspects of Gait
title_fullStr Ground Contact Time Estimating Wearable Sensor to Measure Spatio-Temporal Aspects of Gait
title_full_unstemmed Ground Contact Time Estimating Wearable Sensor to Measure Spatio-Temporal Aspects of Gait
title_short Ground Contact Time Estimating Wearable Sensor to Measure Spatio-Temporal Aspects of Gait
title_sort ground contact time estimating wearable sensor to measure spatio-temporal aspects of gait
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9099479/
https://www.ncbi.nlm.nih.gov/pubmed/35590822
http://dx.doi.org/10.3390/s22093132
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