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Measurement of the Chair Rise Performance of Older People Based on Force Plates and IMUs

An early detection of functional decline with age is important to start interventions at an early state and to prolong the functional fitness. In order to assure such an early detection, functional assessments must be conducted on a frequent and regular basis. Since the five time chair rise test (5C...

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Autores principales: Hellmers, Sandra, Fudickar, Sebastian, Lau, Sandra, Elgert, Lena, Diekmann, Rebecca, Bauer, Jürgen M., Hein, Andreas
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2019
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6471607/
https://www.ncbi.nlm.nih.gov/pubmed/30893819
http://dx.doi.org/10.3390/s19061370
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author Hellmers, Sandra
Fudickar, Sebastian
Lau, Sandra
Elgert, Lena
Diekmann, Rebecca
Bauer, Jürgen M.
Hein, Andreas
author_facet Hellmers, Sandra
Fudickar, Sebastian
Lau, Sandra
Elgert, Lena
Diekmann, Rebecca
Bauer, Jürgen M.
Hein, Andreas
author_sort Hellmers, Sandra
collection PubMed
description An early detection of functional decline with age is important to start interventions at an early state and to prolong the functional fitness. In order to assure such an early detection, functional assessments must be conducted on a frequent and regular basis. Since the five time chair rise test (5CRT) is a well-established test in the geriatric field, this test should be supported by technology. We introduce an approach that automatically detects the execution of the chair rise test via an inertial sensor integrated into a belt. The system’s suitability was evaluated via 20 subjects aged 72–89 years (78.2 ± 4.6 years) and was measured by a stopwatch, the inertial measurement unit (IMU), a Kinect(®) camera and a force plate. A Multilayer Perceptrons-based classifier detects transitions in the IMU data with an F1-Score of around 94.8%. Valid executions of the 5CRT are detected based on the correct occurrence of sequential movements via a rule-based model. The results of the automatically calculated test durations are in good agreement with the stopwatch measurements (correlation coefficient r = 0.93 (p < 0.001)). The analysis of the duration of single test cycles indicates a beginning fatigue at the end of the test. The comparison of the movement pattern within one person shows similar movement patterns, which differ only slightly in form and duration, whereby different subjects indicate variations regarding their performance strategies.
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spelling pubmed-64716072019-04-26 Measurement of the Chair Rise Performance of Older People Based on Force Plates and IMUs Hellmers, Sandra Fudickar, Sebastian Lau, Sandra Elgert, Lena Diekmann, Rebecca Bauer, Jürgen M. Hein, Andreas Sensors (Basel) Article An early detection of functional decline with age is important to start interventions at an early state and to prolong the functional fitness. In order to assure such an early detection, functional assessments must be conducted on a frequent and regular basis. Since the five time chair rise test (5CRT) is a well-established test in the geriatric field, this test should be supported by technology. We introduce an approach that automatically detects the execution of the chair rise test via an inertial sensor integrated into a belt. The system’s suitability was evaluated via 20 subjects aged 72–89 years (78.2 ± 4.6 years) and was measured by a stopwatch, the inertial measurement unit (IMU), a Kinect(®) camera and a force plate. A Multilayer Perceptrons-based classifier detects transitions in the IMU data with an F1-Score of around 94.8%. Valid executions of the 5CRT are detected based on the correct occurrence of sequential movements via a rule-based model. The results of the automatically calculated test durations are in good agreement with the stopwatch measurements (correlation coefficient r = 0.93 (p < 0.001)). The analysis of the duration of single test cycles indicates a beginning fatigue at the end of the test. The comparison of the movement pattern within one person shows similar movement patterns, which differ only slightly in form and duration, whereby different subjects indicate variations regarding their performance strategies. MDPI 2019-03-19 /pmc/articles/PMC6471607/ /pubmed/30893819 http://dx.doi.org/10.3390/s19061370 Text en © 2019 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
Hellmers, Sandra
Fudickar, Sebastian
Lau, Sandra
Elgert, Lena
Diekmann, Rebecca
Bauer, Jürgen M.
Hein, Andreas
Measurement of the Chair Rise Performance of Older People Based on Force Plates and IMUs
title Measurement of the Chair Rise Performance of Older People Based on Force Plates and IMUs
title_full Measurement of the Chair Rise Performance of Older People Based on Force Plates and IMUs
title_fullStr Measurement of the Chair Rise Performance of Older People Based on Force Plates and IMUs
title_full_unstemmed Measurement of the Chair Rise Performance of Older People Based on Force Plates and IMUs
title_short Measurement of the Chair Rise Performance of Older People Based on Force Plates and IMUs
title_sort measurement of the chair rise performance of older people based on force plates and imus
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6471607/
https://www.ncbi.nlm.nih.gov/pubmed/30893819
http://dx.doi.org/10.3390/s19061370
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