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The effects of trunk kinematics and EMG activity of wheelchair racing T54 athletes on wheelchair propulsion speeds

BACKGROUND: The purpose of this study is to examine the impact of trunk kinematic characteristics and trunk muscle electromyography (EMG) activity on propulsion speeds in wheelchair racing T54 athletes. METHOD: The Vicon infrared high-speed 3D motion capture system was utilized to acquire kinematic...

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Autores principales: Guo, Wei, Liu, Qian, Huang, Peng, Wang, Dan, Shi, Lin, Han, Dong
Formato: Online Artículo Texto
Lenguaje:English
Publicado: PeerJ Inc. 2023
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10423560/
https://www.ncbi.nlm.nih.gov/pubmed/37581118
http://dx.doi.org/10.7717/peerj.15792
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author Guo, Wei
Liu, Qian
Huang, Peng
Wang, Dan
Shi, Lin
Han, Dong
author_facet Guo, Wei
Liu, Qian
Huang, Peng
Wang, Dan
Shi, Lin
Han, Dong
author_sort Guo, Wei
collection PubMed
description BACKGROUND: The purpose of this study is to examine the impact of trunk kinematic characteristics and trunk muscle electromyography (EMG) activity on propulsion speeds in wheelchair racing T54 athletes. METHOD: The Vicon infrared high-speed 3D motion capture system was utilized to acquire kinematic data of the shoulders, elbows, wrists, and trunk from twelve T54 athletes at four different speeds (5.55 m/s, 6.94 m/s, 8.33 m/s, and personal maximum speed). Additionally, the Trigno Wireless EMG system was employed to collect synchronous surface electromyography (EMG) data from the rectus abdominis and erector spinae muscles. The kinematics and EMG data of the trunk were compared across various wheelchair propulsion speeds while also examining the correlation coefficient between wheelchair propulsion speeds and: (1) the range of motion of upper limb joints as well as the trunk; (2) the maximum angular velocities of the upper limbs joints as well as the trunk; and (3) rectus abdominis and erector spinae EMG activity. Two multiple linear stepwise regression models were utilized to examine the impact of variables that had been identified as significant through correlation coefficient tests (1) and (2) on propulsion speed, respectively. RESULTS: There were significant differences in the range of motion (p<0.01) and angular velocity (p<0.01) of the athlete’s trunk between different propulsion speeds. The range of motion (p<0.01, r = 0.725) and angular speed (p<0.01, r = 0.882) of the trunk showed a stronger correlation with propulsion speed than did upper limb joint movements. The multiple linear stepwise regression model revealed that the standardized β values of trunk motion range and angular velocity in athletes were greater than those of other independent variables in both models. In terms of the EMG variables, four of six variables from the rectus abdominis showed differences at different speeds (p<0.01), one of six variables from the erector spinae showed differences at different speeds (p<0.01). All six variables derived from the rectus abdominis exhibited a significant correlation with propulsion speed (p<0.05, r>0.3), while one variable derived from the erector spinae was found to be significantly correlated with propulsion speed (p<0.01, r = 0.551). CONCLUSION: The movement of the trunk plays a pivotal role in determining the propulsion speed of wheelchair racing T54 athletes. Athletes are advised to utilize trunk movements to enhance their wheelchair’s propulsion speed while also being mindful of the potential negative impact on sports performance resulting from excessive trunk elevation. The findings of this study indicate that it would be beneficial for wheelchair racing T54 athletes to incorporate trunk strength training into their overall strength training regimen, with a specific emphasis on enhancing the flexion and extension muscles of the trunk.
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spelling pubmed-104235602023-08-14 The effects of trunk kinematics and EMG activity of wheelchair racing T54 athletes on wheelchair propulsion speeds Guo, Wei Liu, Qian Huang, Peng Wang, Dan Shi, Lin Han, Dong PeerJ Kinesiology BACKGROUND: The purpose of this study is to examine the impact of trunk kinematic characteristics and trunk muscle electromyography (EMG) activity on propulsion speeds in wheelchair racing T54 athletes. METHOD: The Vicon infrared high-speed 3D motion capture system was utilized to acquire kinematic data of the shoulders, elbows, wrists, and trunk from twelve T54 athletes at four different speeds (5.55 m/s, 6.94 m/s, 8.33 m/s, and personal maximum speed). Additionally, the Trigno Wireless EMG system was employed to collect synchronous surface electromyography (EMG) data from the rectus abdominis and erector spinae muscles. The kinematics and EMG data of the trunk were compared across various wheelchair propulsion speeds while also examining the correlation coefficient between wheelchair propulsion speeds and: (1) the range of motion of upper limb joints as well as the trunk; (2) the maximum angular velocities of the upper limbs joints as well as the trunk; and (3) rectus abdominis and erector spinae EMG activity. Two multiple linear stepwise regression models were utilized to examine the impact of variables that had been identified as significant through correlation coefficient tests (1) and (2) on propulsion speed, respectively. RESULTS: There were significant differences in the range of motion (p<0.01) and angular velocity (p<0.01) of the athlete’s trunk between different propulsion speeds. The range of motion (p<0.01, r = 0.725) and angular speed (p<0.01, r = 0.882) of the trunk showed a stronger correlation with propulsion speed than did upper limb joint movements. The multiple linear stepwise regression model revealed that the standardized β values of trunk motion range and angular velocity in athletes were greater than those of other independent variables in both models. In terms of the EMG variables, four of six variables from the rectus abdominis showed differences at different speeds (p<0.01), one of six variables from the erector spinae showed differences at different speeds (p<0.01). All six variables derived from the rectus abdominis exhibited a significant correlation with propulsion speed (p<0.05, r>0.3), while one variable derived from the erector spinae was found to be significantly correlated with propulsion speed (p<0.01, r = 0.551). CONCLUSION: The movement of the trunk plays a pivotal role in determining the propulsion speed of wheelchair racing T54 athletes. Athletes are advised to utilize trunk movements to enhance their wheelchair’s propulsion speed while also being mindful of the potential negative impact on sports performance resulting from excessive trunk elevation. The findings of this study indicate that it would be beneficial for wheelchair racing T54 athletes to incorporate trunk strength training into their overall strength training regimen, with a specific emphasis on enhancing the flexion and extension muscles of the trunk. PeerJ Inc. 2023-08-10 /pmc/articles/PMC10423560/ /pubmed/37581118 http://dx.doi.org/10.7717/peerj.15792 Text en ©2023 Guo 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, reproduction and adaptation in any medium and for any purpose provided that it is properly attributed. For attribution, the original author(s), title, publication source (PeerJ) and either DOI or URL of the article must be cited.
spellingShingle Kinesiology
Guo, Wei
Liu, Qian
Huang, Peng
Wang, Dan
Shi, Lin
Han, Dong
The effects of trunk kinematics and EMG activity of wheelchair racing T54 athletes on wheelchair propulsion speeds
title The effects of trunk kinematics and EMG activity of wheelchair racing T54 athletes on wheelchair propulsion speeds
title_full The effects of trunk kinematics and EMG activity of wheelchair racing T54 athletes on wheelchair propulsion speeds
title_fullStr The effects of trunk kinematics and EMG activity of wheelchair racing T54 athletes on wheelchair propulsion speeds
title_full_unstemmed The effects of trunk kinematics and EMG activity of wheelchair racing T54 athletes on wheelchair propulsion speeds
title_short The effects of trunk kinematics and EMG activity of wheelchair racing T54 athletes on wheelchair propulsion speeds
title_sort effects of trunk kinematics and emg activity of wheelchair racing t54 athletes on wheelchair propulsion speeds
topic Kinesiology
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10423560/
https://www.ncbi.nlm.nih.gov/pubmed/37581118
http://dx.doi.org/10.7717/peerj.15792
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