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Fully Automatic Fall Risk Assessment Based on a Fast Mobility Test

This paper presents a fall risk assessment approach based on a fast mobility test, automatically evaluated using a low-cost, scalable system for the recording and analysis of body movement. This mobility test has never before been investigated as a sole source of data for fall risk assessment. It ca...

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Autores principales: Tylman, Wojciech, Kotas, Rafał, Kamiński, Marek, Marciniak, Paweł, Woźniak, Sebastian, Napieralski, Jan, Sakowicz, Bartosz, Janc, Magdalena, Józefowicz-Korczyńska, Magdalena, Zamysłowska-Szmytke, Ewa
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7918104/
https://www.ncbi.nlm.nih.gov/pubmed/33668626
http://dx.doi.org/10.3390/s21041338
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author Tylman, Wojciech
Kotas, Rafał
Kamiński, Marek
Marciniak, Paweł
Woźniak, Sebastian
Napieralski, Jan
Sakowicz, Bartosz
Janc, Magdalena
Józefowicz-Korczyńska, Magdalena
Zamysłowska-Szmytke, Ewa
author_facet Tylman, Wojciech
Kotas, Rafał
Kamiński, Marek
Marciniak, Paweł
Woźniak, Sebastian
Napieralski, Jan
Sakowicz, Bartosz
Janc, Magdalena
Józefowicz-Korczyńska, Magdalena
Zamysłowska-Szmytke, Ewa
author_sort Tylman, Wojciech
collection PubMed
description This paper presents a fall risk assessment approach based on a fast mobility test, automatically evaluated using a low-cost, scalable system for the recording and analysis of body movement. This mobility test has never before been investigated as a sole source of data for fall risk assessment. It can be performed in a very limited space and needs only minimal additional equipment, yet provides large amounts of information, as the presented system can obtain much more data than traditional observation by capturing minute details regarding body movement. The readings are provided wirelessly by one to seven low-cost micro-electro-mechanical inertial measurement units attached to the subject’s body segments. Combined with a body model, these allow segment rotations and translations to be computed and for body movements to be recreated in software. The subject can then be automatically classified by an artificial neural network based on selected values in the test, and those with an elevated risk of falls can be identified. Results obtained from a group of 40 subjects of various ages, both healthy volunteers and patients with vestibular system impairment, are presented to demonstrate the combined capabilities of the test and system. Labelling of subjects as fallers and non-fallers was performed using an objective and precise sensory organization test; it is an important novelty as this approach to subject labelling has never before been used in the design and evaluation of fall risk assessment systems. The findings show a true-positive ratio of 85% and true-negative ratio of 63% for classifying subjects as fallers or non-fallers using the introduced fast mobility test, which are noticeably better than those obtained for the long-established Timed Up and Go test.
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spelling pubmed-79181042021-03-02 Fully Automatic Fall Risk Assessment Based on a Fast Mobility Test Tylman, Wojciech Kotas, Rafał Kamiński, Marek Marciniak, Paweł Woźniak, Sebastian Napieralski, Jan Sakowicz, Bartosz Janc, Magdalena Józefowicz-Korczyńska, Magdalena Zamysłowska-Szmytke, Ewa Sensors (Basel) Article This paper presents a fall risk assessment approach based on a fast mobility test, automatically evaluated using a low-cost, scalable system for the recording and analysis of body movement. This mobility test has never before been investigated as a sole source of data for fall risk assessment. It can be performed in a very limited space and needs only minimal additional equipment, yet provides large amounts of information, as the presented system can obtain much more data than traditional observation by capturing minute details regarding body movement. The readings are provided wirelessly by one to seven low-cost micro-electro-mechanical inertial measurement units attached to the subject’s body segments. Combined with a body model, these allow segment rotations and translations to be computed and for body movements to be recreated in software. The subject can then be automatically classified by an artificial neural network based on selected values in the test, and those with an elevated risk of falls can be identified. Results obtained from a group of 40 subjects of various ages, both healthy volunteers and patients with vestibular system impairment, are presented to demonstrate the combined capabilities of the test and system. Labelling of subjects as fallers and non-fallers was performed using an objective and precise sensory organization test; it is an important novelty as this approach to subject labelling has never before been used in the design and evaluation of fall risk assessment systems. The findings show a true-positive ratio of 85% and true-negative ratio of 63% for classifying subjects as fallers or non-fallers using the introduced fast mobility test, which are noticeably better than those obtained for the long-established Timed Up and Go test. MDPI 2021-02-13 /pmc/articles/PMC7918104/ /pubmed/33668626 http://dx.doi.org/10.3390/s21041338 Text en © 2021 by the authors. 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 (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Tylman, Wojciech
Kotas, Rafał
Kamiński, Marek
Marciniak, Paweł
Woźniak, Sebastian
Napieralski, Jan
Sakowicz, Bartosz
Janc, Magdalena
Józefowicz-Korczyńska, Magdalena
Zamysłowska-Szmytke, Ewa
Fully Automatic Fall Risk Assessment Based on a Fast Mobility Test
title Fully Automatic Fall Risk Assessment Based on a Fast Mobility Test
title_full Fully Automatic Fall Risk Assessment Based on a Fast Mobility Test
title_fullStr Fully Automatic Fall Risk Assessment Based on a Fast Mobility Test
title_full_unstemmed Fully Automatic Fall Risk Assessment Based on a Fast Mobility Test
title_short Fully Automatic Fall Risk Assessment Based on a Fast Mobility Test
title_sort fully automatic fall risk assessment based on a fast mobility test
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7918104/
https://www.ncbi.nlm.nih.gov/pubmed/33668626
http://dx.doi.org/10.3390/s21041338
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