Age-Related Differences in Hamstring Flexibility in Prepubertal Soccer Players: An Exploratory Cross-Sectional Study

This study aimed to investigate the hamstring flexibility rate among prepubertal soccer players from U8 to U12 and the role of age and soccer years of practice on the course of hamstring flexibility. Six hundred eleven young Italian soccer players from a local soccer school in Turin were recruited f...

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Main Authors: Federico Abate Daga, Marco Panzolini, Ruben Allois, Luca Baseggio, Samuel Agostino
Format: Article
Language:English
Published: Frontiers Media S.A. 2021-11-01
Series:Frontiers in Psychology
Subjects:
Online Access:https://www.frontiersin.org/articles/10.3389/fpsyg.2021.741756/full
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author Federico Abate Daga
Federico Abate Daga
Marco Panzolini
Ruben Allois
Ruben Allois
Luca Baseggio
Samuel Agostino
author_facet Federico Abate Daga
Federico Abate Daga
Marco Panzolini
Ruben Allois
Ruben Allois
Luca Baseggio
Samuel Agostino
author_sort Federico Abate Daga
collection DOAJ
description This study aimed to investigate the hamstring flexibility rate among prepubertal soccer players from U8 to U12 and the role of age and soccer years of practice on the course of hamstring flexibility. Six hundred eleven young Italian soccer players from a local soccer school in Turin were recruited for this research and assigned to each group according to their chronological age (U8 = 124 players; U9 = 130 players; U10 = 151 players; U11 = 89 players; and U12 = 120 players). Hamstring flexibility was measured using the Sit and Reach Test (SAR), while data analysis was run using a one-way analysis of variance (one-way ANOVA). Furthermore, Tuckey’s post hoc was used to determine differences among the classes of age. Finally, a bivariate ordinal regression analysis was used to evaluate a potential association between age categories and hamstrings flexibility. In addition, multivariable ordinal regression was used to analyze this relationship adjusted for the Body Mass Index (BMI). The one-way ANOVA showed significant differences in flexibility among groups (F = 32.76, P < 0.0001). Tuckey’s post hoc identified significant differences between U8 and U10 (p < 0.01; −2,39 cm of hamstring stretching), U8 and U11 (p < 0.05; −2.19 cm), U8 and U12 (p < 0.0001; −5.90), U9 and U12 (p < 0.0001; −4.98 cm), U10 and U12 (p < 0.0001; −3.5 cm), U11 and U12 (p < 0,001; −3.70 cm). In the bivariate ordinal regression analysis, there was a negative association between the age categories and hamstrings flexibility (R2 = 0.137; p < 0.0001). The association persisted in multivariable ordinal regression analysis adjusted for BMI (R2 = 0.138; p < 0.0001). This study underlines changes in hamstring flexibility across different age groups of prepubertal soccer players. The older and more experienced in soccer are less flexible than the younger, considering the hamstring muscles. Thus, appropriate stretching protocols should be included in prepubertal soccer training to avoid the risk of lead players to excess hamstring tightness.
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spelling doaj.art-18ff2519fb5c4d58b950370ac3d242dd2022-12-21T20:37:10ZengFrontiers Media S.A.Frontiers in Psychology1664-10782021-11-011210.3389/fpsyg.2021.741756741756Age-Related Differences in Hamstring Flexibility in Prepubertal Soccer Players: An Exploratory Cross-Sectional StudyFederico Abate Daga0Federico Abate Daga1Marco Panzolini2Ruben Allois3Ruben Allois4Luca Baseggio5Samuel Agostino6Department of Clinical and Biological Sciences, University of Turin, Turin, ItalySchool of Exercise and Sport Sciences, University of Turin, Turin, ItalySchool of Exercise and Sport Sciences, University of Turin, Turin, ItalyDepartment of Clinical and Biological Sciences, University of Turin, Turin, ItalySchool of Exercise and Sport Sciences, University of Turin, Turin, ItalySchool of Exercise and Sport Sciences, University of Turin, Turin, ItalySchool of Exercise and Sport Sciences, University of Turin, Turin, ItalyThis study aimed to investigate the hamstring flexibility rate among prepubertal soccer players from U8 to U12 and the role of age and soccer years of practice on the course of hamstring flexibility. Six hundred eleven young Italian soccer players from a local soccer school in Turin were recruited for this research and assigned to each group according to their chronological age (U8 = 124 players; U9 = 130 players; U10 = 151 players; U11 = 89 players; and U12 = 120 players). Hamstring flexibility was measured using the Sit and Reach Test (SAR), while data analysis was run using a one-way analysis of variance (one-way ANOVA). Furthermore, Tuckey’s post hoc was used to determine differences among the classes of age. Finally, a bivariate ordinal regression analysis was used to evaluate a potential association between age categories and hamstrings flexibility. In addition, multivariable ordinal regression was used to analyze this relationship adjusted for the Body Mass Index (BMI). The one-way ANOVA showed significant differences in flexibility among groups (F = 32.76, P < 0.0001). Tuckey’s post hoc identified significant differences between U8 and U10 (p < 0.01; −2,39 cm of hamstring stretching), U8 and U11 (p < 0.05; −2.19 cm), U8 and U12 (p < 0.0001; −5.90), U9 and U12 (p < 0.0001; −4.98 cm), U10 and U12 (p < 0.0001; −3.5 cm), U11 and U12 (p < 0,001; −3.70 cm). In the bivariate ordinal regression analysis, there was a negative association between the age categories and hamstrings flexibility (R2 = 0.137; p < 0.0001). The association persisted in multivariable ordinal regression analysis adjusted for BMI (R2 = 0.138; p < 0.0001). This study underlines changes in hamstring flexibility across different age groups of prepubertal soccer players. The older and more experienced in soccer are less flexible than the younger, considering the hamstring muscles. Thus, appropriate stretching protocols should be included in prepubertal soccer training to avoid the risk of lead players to excess hamstring tightness.https://www.frontiersin.org/articles/10.3389/fpsyg.2021.741756/fullbiological maturationmuscles flexibilitystretchingyouth soccerkids
spellingShingle Federico Abate Daga
Federico Abate Daga
Marco Panzolini
Ruben Allois
Ruben Allois
Luca Baseggio
Samuel Agostino
Age-Related Differences in Hamstring Flexibility in Prepubertal Soccer Players: An Exploratory Cross-Sectional Study
Frontiers in Psychology
biological maturation
muscles flexibility
stretching
youth soccer
kids
title Age-Related Differences in Hamstring Flexibility in Prepubertal Soccer Players: An Exploratory Cross-Sectional Study
title_full Age-Related Differences in Hamstring Flexibility in Prepubertal Soccer Players: An Exploratory Cross-Sectional Study
title_fullStr Age-Related Differences in Hamstring Flexibility in Prepubertal Soccer Players: An Exploratory Cross-Sectional Study
title_full_unstemmed Age-Related Differences in Hamstring Flexibility in Prepubertal Soccer Players: An Exploratory Cross-Sectional Study
title_short Age-Related Differences in Hamstring Flexibility in Prepubertal Soccer Players: An Exploratory Cross-Sectional Study
title_sort age related differences in hamstring flexibility in prepubertal soccer players an exploratory cross sectional study
topic biological maturation
muscles flexibility
stretching
youth soccer
kids
url https://www.frontiersin.org/articles/10.3389/fpsyg.2021.741756/full
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