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Accuracy and repeatability of the Microsoft Azure Kinect for clinical measurement of motor function

Quantitative assessment of motor function is increasingly applied in fall risk stratification, diagnosis, and disease monitoring of neuro-geriatric disorders of balance and gait. Its broad application, however, demands for low-cost and easy to use solutions that facilitate high-quality assessment ou...

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Autores principales: Bertram, Johannes, Krüger, Theresa, Röhling, Hanna Marie, Jelusic, Ante, Mansow-Model, Sebastian, Schniepp, Roman, Wuehr, Max, Otte, Karen
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Public Library of Science 2023
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9879399/
https://www.ncbi.nlm.nih.gov/pubmed/36701322
http://dx.doi.org/10.1371/journal.pone.0279697
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author Bertram, Johannes
Krüger, Theresa
Röhling, Hanna Marie
Jelusic, Ante
Mansow-Model, Sebastian
Schniepp, Roman
Wuehr, Max
Otte, Karen
author_facet Bertram, Johannes
Krüger, Theresa
Röhling, Hanna Marie
Jelusic, Ante
Mansow-Model, Sebastian
Schniepp, Roman
Wuehr, Max
Otte, Karen
author_sort Bertram, Johannes
collection PubMed
description Quantitative assessment of motor function is increasingly applied in fall risk stratification, diagnosis, and disease monitoring of neuro-geriatric disorders of balance and gait. Its broad application, however, demands for low-cost and easy to use solutions that facilitate high-quality assessment outside laboratory settings. In this study, we validated in 30 healthy adults (12 female, age: 32.5 [22 – 62] years) the performance and accuracy of the latest generation of the Microsoft RGB-D camera, i.e., Azure Kinect (AK), in tracking body motion and providing estimates of clinical measures that characterise static posture, postural transitions, and locomotor function. The accuracy and repeatability of AK recordings was validated with a clinical reference standard multi-camera motion capture system (Qualisys) and compared to its predecessor Kinect version 2 (K2). Motion signal quality was evaluated by Pearson’s correlation and signal-to-noise ratios while the accuracy of estimated clinical parameters was described by absolute and relative agreement based on intraclass correlation coefficients. The accuracy of AK-based body motion signals was moderate to excellent (RMSE 89 to 20 mm) and depended on the dimension of motion (highest for anterior-posterior dimension), the body region (highest for wrists and elbows, lowest for ankles and feet), and the specific motor task (highest for stand up and sit down, lowest for quiet standing). Most derived clinical parameters showed good to excellent accuracy (r .84 to .99) and repeatability (ICC(1,1) .55 to .94). The overall performance and limitations of body tracking by AK were comparable to its predecessor K2 in a cohort of young healthy adults. The observed accuracy and repeatability of AK-based evaluation of motor function indicate the potential for a broad application of high-quality and long-term monitoring of balance and gait in different non-specialised environments such as medical practices, nursing homes or community centres.
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spelling pubmed-98793992023-01-27 Accuracy and repeatability of the Microsoft Azure Kinect for clinical measurement of motor function Bertram, Johannes Krüger, Theresa Röhling, Hanna Marie Jelusic, Ante Mansow-Model, Sebastian Schniepp, Roman Wuehr, Max Otte, Karen PLoS One Research Article Quantitative assessment of motor function is increasingly applied in fall risk stratification, diagnosis, and disease monitoring of neuro-geriatric disorders of balance and gait. Its broad application, however, demands for low-cost and easy to use solutions that facilitate high-quality assessment outside laboratory settings. In this study, we validated in 30 healthy adults (12 female, age: 32.5 [22 – 62] years) the performance and accuracy of the latest generation of the Microsoft RGB-D camera, i.e., Azure Kinect (AK), in tracking body motion and providing estimates of clinical measures that characterise static posture, postural transitions, and locomotor function. The accuracy and repeatability of AK recordings was validated with a clinical reference standard multi-camera motion capture system (Qualisys) and compared to its predecessor Kinect version 2 (K2). Motion signal quality was evaluated by Pearson’s correlation and signal-to-noise ratios while the accuracy of estimated clinical parameters was described by absolute and relative agreement based on intraclass correlation coefficients. The accuracy of AK-based body motion signals was moderate to excellent (RMSE 89 to 20 mm) and depended on the dimension of motion (highest for anterior-posterior dimension), the body region (highest for wrists and elbows, lowest for ankles and feet), and the specific motor task (highest for stand up and sit down, lowest for quiet standing). Most derived clinical parameters showed good to excellent accuracy (r .84 to .99) and repeatability (ICC(1,1) .55 to .94). The overall performance and limitations of body tracking by AK were comparable to its predecessor K2 in a cohort of young healthy adults. The observed accuracy and repeatability of AK-based evaluation of motor function indicate the potential for a broad application of high-quality and long-term monitoring of balance and gait in different non-specialised environments such as medical practices, nursing homes or community centres. Public Library of Science 2023-01-26 /pmc/articles/PMC9879399/ /pubmed/36701322 http://dx.doi.org/10.1371/journal.pone.0279697 Text en © 2023 Bertram et al https://creativecommons.org/licenses/by/4.0/This is an open access article distributed under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0/) , which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
spellingShingle Research Article
Bertram, Johannes
Krüger, Theresa
Röhling, Hanna Marie
Jelusic, Ante
Mansow-Model, Sebastian
Schniepp, Roman
Wuehr, Max
Otte, Karen
Accuracy and repeatability of the Microsoft Azure Kinect for clinical measurement of motor function
title Accuracy and repeatability of the Microsoft Azure Kinect for clinical measurement of motor function
title_full Accuracy and repeatability of the Microsoft Azure Kinect for clinical measurement of motor function
title_fullStr Accuracy and repeatability of the Microsoft Azure Kinect for clinical measurement of motor function
title_full_unstemmed Accuracy and repeatability of the Microsoft Azure Kinect for clinical measurement of motor function
title_short Accuracy and repeatability of the Microsoft Azure Kinect for clinical measurement of motor function
title_sort accuracy and repeatability of the microsoft azure kinect for clinical measurement of motor function
topic Research Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9879399/
https://www.ncbi.nlm.nih.gov/pubmed/36701322
http://dx.doi.org/10.1371/journal.pone.0279697
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