How does a simulated soccer match affect regional differences in biceps femoris muscle architecture?

Soccer is played by thousands of athletes across the globe and its participation increases the overall risk of injury, in particular, hamstring strain injuries (HSI). Biceps femoris (BF) has been shown to be involved the in 5 out of 6 HSI cases and risk factors including fatigue and short BF fascicl...

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Main Author: Gonçalves, Basílio A. M.
Other Authors: Liikuntatieteellinen tiedekunta, Faculty of Sport and Health Sciences, Liikunta- ja terveystieteet, University of Jyväskylä, Jyväskylän yliopisto
Format: Master's thesis
Language:eng
Published: 2017
Subjects:
Online Access: https://jyx.jyu.fi/handle/123456789/55274
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author Gonçalves, Basílio A. M.
author2 Liikuntatieteellinen tiedekunta Faculty of Sport and Health Sciences Liikunta- ja terveystieteet University of Jyväskylä Jyväskylän yliopisto
author_facet Gonçalves, Basílio A. M. Liikuntatieteellinen tiedekunta Faculty of Sport and Health Sciences Liikunta- ja terveystieteet University of Jyväskylä Jyväskylän yliopisto Gonçalves, Basílio A. M. Liikuntatieteellinen tiedekunta Faculty of Sport and Health Sciences Liikunta- ja terveystieteet University of Jyväskylä Jyväskylän yliopisto
author_sort Gonçalves, Basílio A. M.
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description Soccer is played by thousands of athletes across the globe and its participation increases the overall risk of injury, in particular, hamstring strain injuries (HSI). Biceps femoris (BF) has been shown to be involved the in 5 out of 6 HSI cases and risk factors including fatigue and short BF fascicle length (FL) have been identified. Furthermore, previous studies suggest that different muscle regions may undergo different strains during dynamic tasks, which could contribute to injury risk. The primary aim of this study was to evaluate the effects of a soccer match on regional differences in the BF muscle architecture. A secondary aim was to assess the reliability of the extended field of view (EFOV) 2D ultrasound imaging to measure muscle architecture parameters. Muscle architecture was assessed, using ultrasound, in 9 amateur soccer players and 5 physically active men, before and after a 45 minutes soccer specific fatigue protocol (SAFT)or 20 mintues of rest, respectively. Significant muscle architecture changes were found after SAFT, however, these were smaller than the minimal detectable change associated with the scanning method. No correlations were found between force reductions and muscle architecture changes. Good reliability was found for FL measurements but poor reliability was found for pennation angle and muscle thickness. Muscle architecture changes after 45 minutes of a football match may not be a mechanism to explain the increased HSI rates. Furthermore, when using EFOV ultrasound, care must be taken when interpreting statistically significant results, since these can be below the minimal detectable change or not reliable for all the parameters.
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Biceps femoris (BF) has been shown to be involved the in 5 out of 6 HSI cases and risk factors including fatigue and short BF fascicle length (FL) have been identified. Furthermore, previous studies suggest that different muscle regions may undergo different strains during dynamic tasks, which could contribute to injury risk. The primary aim of this study was to evaluate the effects of a soccer match on regional differences in the BF muscle architecture. A secondary aim was to assess the reliability of the extended field of view (EFOV) 2D ultrasound imaging to measure muscle architecture parameters. \r\n \r\nMuscle architecture was assessed, using ultrasound, in 9 amateur soccer players and 5 physically active men, before and after a 45 minutes soccer specific fatigue protocol (SAFT)or 20 mintues of rest, respectively. \r\n\r\nSignificant muscle architecture changes were found after SAFT, however, these were smaller than the minimal detectable change associated with the scanning method. No correlations were found between force reductions and muscle architecture changes. Good reliability was found for FL measurements but poor reliability was found for pennation angle and muscle thickness. \r\n \r\nMuscle architecture changes after 45 minutes of a football match may not be a mechanism to \r\nexplain the increased HSI rates. 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spellingShingle Gonçalves, Basílio A. M. How does a simulated soccer match affect regional differences in biceps femoris muscle architecture? biceps femoris kaksipäinen reisilihas EFOV fatigue hamstring strain injury muscle architecture soccer Biomekaniikka Biomechanics 5012 urheiluvammat rasitusvammat jalkapalloilijat
title How does a simulated soccer match affect regional differences in biceps femoris muscle architecture?
title_full How does a simulated soccer match affect regional differences in biceps femoris muscle architecture?
title_fullStr How does a simulated soccer match affect regional differences in biceps femoris muscle architecture? How does a simulated soccer match affect regional differences in biceps femoris muscle architecture?
title_full_unstemmed How does a simulated soccer match affect regional differences in biceps femoris muscle architecture? How does a simulated soccer match affect regional differences in biceps femoris muscle architecture?
title_short How does a simulated soccer match affect regional differences in biceps femoris muscle architecture?
title_sort how does a simulated soccer match affect regional differences in biceps femoris muscle architecture
title_txtP How does a simulated soccer match affect regional differences in biceps femoris muscle architecture?
topic biceps femoris kaksipäinen reisilihas EFOV fatigue hamstring strain injury muscle architecture soccer Biomekaniikka Biomechanics 5012 urheiluvammat rasitusvammat jalkapalloilijat
topic_facet 5012 Biomechanics Biomekaniikka EFOV biceps femoris fatigue hamstring strain injury jalkapalloilijat kaksipäinen reisilihas muscle architecture rasitusvammat soccer urheiluvammat
url https://jyx.jyu.fi/handle/123456789/55274 http://www.urn.fi/URN:NBN:fi:jyu-201709053661
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