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Effects of flexibility and strength training on peak hamstring musculotendinous strains during sprinting

BACKGROUND: Hamstring injury is one of the most common injuries in sports involving sprinting. Hamstring flexibility and strength are often considered to be modifiable risk factors in hamstring injury. Understanding the effects of hamstring flexibility or strength training on the biomechanics of the...

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Autores principales: Wan, Xianglin, Li, Shangxiao, Best, Thomas M., Liu, Hui, Li, Hanjun, Yu, Bing
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Shanghai University of Sport 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7987790/
https://www.ncbi.nlm.nih.gov/pubmed/32795623
http://dx.doi.org/10.1016/j.jshs.2020.08.001
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author Wan, Xianglin
Li, Shangxiao
Best, Thomas M.
Liu, Hui
Li, Hanjun
Yu, Bing
author_facet Wan, Xianglin
Li, Shangxiao
Best, Thomas M.
Liu, Hui
Li, Hanjun
Yu, Bing
author_sort Wan, Xianglin
collection PubMed
description BACKGROUND: Hamstring injury is one of the most common injuries in sports involving sprinting. Hamstring flexibility and strength are often considered to be modifiable risk factors in hamstring injury. Understanding the effects of hamstring flexibility or strength training on the biomechanics of the hamstring muscles during sprinting could assist in improving prevention strategies and rehabilitation related to these injuries. The purpose of this study was to determine the effects of altering hamstring flexibility or strength on peak hamstring musculotendinous strain during sprinting. METHODS: A total of 20 male college students (aged 18–24 years) participated and were randomly assigned to either a flexibility intervention group or a strength intervention group. Each participant executed exercise training 3 times a week for 8 weeks. Flexibility, sprinting, and isokinetic strength testing were performed before and after the 2 interventions. Paired t tests were performed to determine hamstring flexibility or strength intervention effects on optimal hamstring musculotendinous lengths and peak hamstring musculotendinous strains during sprinting. RESULTS: Participants in the flexibility intervention group significantly increased the optimal musculotendinous lengths of the semimembranosus and biceps long head (p ≤ 0.026) and decreased peak musculotendinous strains in all 3 bi-articulate hamstring muscles (p ≤ 0.004). Participants in the strength-intervention group significantly increased the optimal musculotendinous lengths of all 3 hamstring muscles (p ≤ 0.041) and significantly decreased their peak musculotendinous strain during sprinting (p ≤ 0.017). CONCLUSION: Increasing hamstring flexibility or strength through exercise training may assist in reducing the risk of hamstring injury during sprinting for recreational male athletes.
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spelling pubmed-79877902021-03-26 Effects of flexibility and strength training on peak hamstring musculotendinous strains during sprinting Wan, Xianglin Li, Shangxiao Best, Thomas M. Liu, Hui Li, Hanjun Yu, Bing J Sport Health Sci Original Article BACKGROUND: Hamstring injury is one of the most common injuries in sports involving sprinting. Hamstring flexibility and strength are often considered to be modifiable risk factors in hamstring injury. Understanding the effects of hamstring flexibility or strength training on the biomechanics of the hamstring muscles during sprinting could assist in improving prevention strategies and rehabilitation related to these injuries. The purpose of this study was to determine the effects of altering hamstring flexibility or strength on peak hamstring musculotendinous strain during sprinting. METHODS: A total of 20 male college students (aged 18–24 years) participated and were randomly assigned to either a flexibility intervention group or a strength intervention group. Each participant executed exercise training 3 times a week for 8 weeks. Flexibility, sprinting, and isokinetic strength testing were performed before and after the 2 interventions. Paired t tests were performed to determine hamstring flexibility or strength intervention effects on optimal hamstring musculotendinous lengths and peak hamstring musculotendinous strains during sprinting. RESULTS: Participants in the flexibility intervention group significantly increased the optimal musculotendinous lengths of the semimembranosus and biceps long head (p ≤ 0.026) and decreased peak musculotendinous strains in all 3 bi-articulate hamstring muscles (p ≤ 0.004). Participants in the strength-intervention group significantly increased the optimal musculotendinous lengths of all 3 hamstring muscles (p ≤ 0.041) and significantly decreased their peak musculotendinous strain during sprinting (p ≤ 0.017). CONCLUSION: Increasing hamstring flexibility or strength through exercise training may assist in reducing the risk of hamstring injury during sprinting for recreational male athletes. Shanghai University of Sport 2021-03 2020-08-11 /pmc/articles/PMC7987790/ /pubmed/32795623 http://dx.doi.org/10.1016/j.jshs.2020.08.001 Text en © 2020 Published by Elsevier B.V. on behalf of Shanghai University of Sport. http://creativecommons.org/licenses/by-nc-nd/4.0/ This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).
spellingShingle Original Article
Wan, Xianglin
Li, Shangxiao
Best, Thomas M.
Liu, Hui
Li, Hanjun
Yu, Bing
Effects of flexibility and strength training on peak hamstring musculotendinous strains during sprinting
title Effects of flexibility and strength training on peak hamstring musculotendinous strains during sprinting
title_full Effects of flexibility and strength training on peak hamstring musculotendinous strains during sprinting
title_fullStr Effects of flexibility and strength training on peak hamstring musculotendinous strains during sprinting
title_full_unstemmed Effects of flexibility and strength training on peak hamstring musculotendinous strains during sprinting
title_short Effects of flexibility and strength training on peak hamstring musculotendinous strains during sprinting
title_sort effects of flexibility and strength training on peak hamstring musculotendinous strains during sprinting
topic Original Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7987790/
https://www.ncbi.nlm.nih.gov/pubmed/32795623
http://dx.doi.org/10.1016/j.jshs.2020.08.001
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