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Muscle synergies in joystick manipulation

Extracting muscle synergies from surface electromyographic signals (sEMGs) during exercises has been widely applied to evaluate motor control strategies. This study explores the relationship between upper-limb muscle synergies and the performance of joystick manipulation tasks. Seventy-seven subject...

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Autores principales: Cai, Liming, Yan, Shuhao, Ouyang, Chuanyun, Zhang, Tianxiang, Zhu, Jun, Chen, Li, Ma, Xin, Liu, Hui
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Frontiers Media S.A. 2023
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10611508/
https://www.ncbi.nlm.nih.gov/pubmed/37900948
http://dx.doi.org/10.3389/fphys.2023.1282295
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author Cai, Liming
Yan, Shuhao
Ouyang, Chuanyun
Zhang, Tianxiang
Zhu, Jun
Chen, Li
Ma, Xin
Liu, Hui
author_facet Cai, Liming
Yan, Shuhao
Ouyang, Chuanyun
Zhang, Tianxiang
Zhu, Jun
Chen, Li
Ma, Xin
Liu, Hui
author_sort Cai, Liming
collection PubMed
description Extracting muscle synergies from surface electromyographic signals (sEMGs) during exercises has been widely applied to evaluate motor control strategies. This study explores the relationship between upper-limb muscle synergies and the performance of joystick manipulation tasks. Seventy-seven subjects, divided into three classes according to their maneuvering experience, were recruited to perform the left and right reciprocation of the joystick. Based on the motion encoder data, their manipulation performance was evaluated by the mean error, standard deviation, and extreme range of position of the joystick. Meanwhile, sEMG and acceleration signals from the upper limbs corresponding to the entire trial were collected. Muscle synergies were extracted from each subject’s sEMG data by non-negative matrix factorization (NMF), based on which the synergy coordination index (SCI), which indicates the size of the synergy space and the variability of the center of activity (CoA), evaluated the temporal activation variability. The synergy pattern space and CoA of all participants were calculated within each class to analyze the correlation between the variability of muscle synergies and the manipulation performance metrics. The correlation level of each class was further compared. The experimental results evidenced a positive correlation between manipulation performance and maneuvering experience. Similar muscle synergy patterns were reflected between the three classes and the structure of the muscle synergies showed stability. In the class of rich maneuvering experience, the correlation between manipulation performance metrics and muscle synergy is more significant than in the classes of trainees and newbies, suggesting that long-term training and practicing can improve manipulation performance, stability of synergy compositions, and temporal activation variability but not alter the structure of muscle synergies determined by a specific task. Our approaches and findings could be applied to 1) reduce manipulation errors, 2) assist maneuvering training and evaluation to enhance transportation safety, and 3) design technical support for sports.
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spelling pubmed-106115082023-10-28 Muscle synergies in joystick manipulation Cai, Liming Yan, Shuhao Ouyang, Chuanyun Zhang, Tianxiang Zhu, Jun Chen, Li Ma, Xin Liu, Hui Front Physiol Physiology Extracting muscle synergies from surface electromyographic signals (sEMGs) during exercises has been widely applied to evaluate motor control strategies. This study explores the relationship between upper-limb muscle synergies and the performance of joystick manipulation tasks. Seventy-seven subjects, divided into three classes according to their maneuvering experience, were recruited to perform the left and right reciprocation of the joystick. Based on the motion encoder data, their manipulation performance was evaluated by the mean error, standard deviation, and extreme range of position of the joystick. Meanwhile, sEMG and acceleration signals from the upper limbs corresponding to the entire trial were collected. Muscle synergies were extracted from each subject’s sEMG data by non-negative matrix factorization (NMF), based on which the synergy coordination index (SCI), which indicates the size of the synergy space and the variability of the center of activity (CoA), evaluated the temporal activation variability. The synergy pattern space and CoA of all participants were calculated within each class to analyze the correlation between the variability of muscle synergies and the manipulation performance metrics. The correlation level of each class was further compared. The experimental results evidenced a positive correlation between manipulation performance and maneuvering experience. Similar muscle synergy patterns were reflected between the three classes and the structure of the muscle synergies showed stability. In the class of rich maneuvering experience, the correlation between manipulation performance metrics and muscle synergy is more significant than in the classes of trainees and newbies, suggesting that long-term training and practicing can improve manipulation performance, stability of synergy compositions, and temporal activation variability but not alter the structure of muscle synergies determined by a specific task. Our approaches and findings could be applied to 1) reduce manipulation errors, 2) assist maneuvering training and evaluation to enhance transportation safety, and 3) design technical support for sports. Frontiers Media S.A. 2023-10-13 /pmc/articles/PMC10611508/ /pubmed/37900948 http://dx.doi.org/10.3389/fphys.2023.1282295 Text en Copyright © 2023 Cai, Yan, Ouyang, Zhang, Zhu, Chen, Ma and Liu. https://creativecommons.org/licenses/by/4.0/This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.
spellingShingle Physiology
Cai, Liming
Yan, Shuhao
Ouyang, Chuanyun
Zhang, Tianxiang
Zhu, Jun
Chen, Li
Ma, Xin
Liu, Hui
Muscle synergies in joystick manipulation
title Muscle synergies in joystick manipulation
title_full Muscle synergies in joystick manipulation
title_fullStr Muscle synergies in joystick manipulation
title_full_unstemmed Muscle synergies in joystick manipulation
title_short Muscle synergies in joystick manipulation
title_sort muscle synergies in joystick manipulation
topic Physiology
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10611508/
https://www.ncbi.nlm.nih.gov/pubmed/37900948
http://dx.doi.org/10.3389/fphys.2023.1282295
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