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Heart Rate Variability-Based Subjective Physical Fatigue Assessment
Accurate assessment of physical fatigue is crucial to preventing physical injury caused by excessive exercise, overtraining during daily exercise and professional sports training. However, as a subjective feeling of an individual, physical fatigue is difficult for others to objectively evaluate. Hea...
Autores principales: | , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2022
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9100264/ https://www.ncbi.nlm.nih.gov/pubmed/35590889 http://dx.doi.org/10.3390/s22093199 |
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author | Ni, Zhiqiang Sun, Fangmin Li, Ye |
author_facet | Ni, Zhiqiang Sun, Fangmin Li, Ye |
author_sort | Ni, Zhiqiang |
collection | PubMed |
description | Accurate assessment of physical fatigue is crucial to preventing physical injury caused by excessive exercise, overtraining during daily exercise and professional sports training. However, as a subjective feeling of an individual, physical fatigue is difficult for others to objectively evaluate. Heart rate variability (HRV), which is derived from electrocardiograms (ECG) and controlled by the autonomic nervous system, has been demonstrated to be a promising indicator for physical fatigue estimation. In this paper, we propose a novel method for the automatic and objective classification of physical fatigue based on HRV. First, a total of 24 HRV features were calculated. Then, a feature selection method was proposed to remove useless features that have a low correlation with physical fatigue and redundant features that have a high correlation with the selected features. After feature selection, the best 11 features were selected and were finally used for physical fatigue classifying. Four machine learning algorithms were trained to classify fatigue using the selected features. The experimental results indicate that the model trained using the selected 11 features could classify physical fatigue with high accuracy. More importantly, these selected features could provide important information regarding the identification of physical fatigue. |
format | Online Article Text |
id | pubmed-9100264 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2022 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-91002642022-05-14 Heart Rate Variability-Based Subjective Physical Fatigue Assessment Ni, Zhiqiang Sun, Fangmin Li, Ye Sensors (Basel) Article Accurate assessment of physical fatigue is crucial to preventing physical injury caused by excessive exercise, overtraining during daily exercise and professional sports training. However, as a subjective feeling of an individual, physical fatigue is difficult for others to objectively evaluate. Heart rate variability (HRV), which is derived from electrocardiograms (ECG) and controlled by the autonomic nervous system, has been demonstrated to be a promising indicator for physical fatigue estimation. In this paper, we propose a novel method for the automatic and objective classification of physical fatigue based on HRV. First, a total of 24 HRV features were calculated. Then, a feature selection method was proposed to remove useless features that have a low correlation with physical fatigue and redundant features that have a high correlation with the selected features. After feature selection, the best 11 features were selected and were finally used for physical fatigue classifying. Four machine learning algorithms were trained to classify fatigue using the selected features. The experimental results indicate that the model trained using the selected 11 features could classify physical fatigue with high accuracy. More importantly, these selected features could provide important information regarding the identification of physical fatigue. MDPI 2022-04-21 /pmc/articles/PMC9100264/ /pubmed/35590889 http://dx.doi.org/10.3390/s22093199 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 Ni, Zhiqiang Sun, Fangmin Li, Ye Heart Rate Variability-Based Subjective Physical Fatigue Assessment |
title | Heart Rate Variability-Based Subjective Physical Fatigue Assessment |
title_full | Heart Rate Variability-Based Subjective Physical Fatigue Assessment |
title_fullStr | Heart Rate Variability-Based Subjective Physical Fatigue Assessment |
title_full_unstemmed | Heart Rate Variability-Based Subjective Physical Fatigue Assessment |
title_short | Heart Rate Variability-Based Subjective Physical Fatigue Assessment |
title_sort | heart rate variability-based subjective physical fatigue assessment |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9100264/ https://www.ncbi.nlm.nih.gov/pubmed/35590889 http://dx.doi.org/10.3390/s22093199 |
work_keys_str_mv | AT nizhiqiang heartratevariabilitybasedsubjectivephysicalfatigueassessment AT sunfangmin heartratevariabilitybasedsubjectivephysicalfatigueassessment AT liye heartratevariabilitybasedsubjectivephysicalfatigueassessment |