Effect of an 8-week training program on the rebalancing of functional asymmetry in young footballers

Background. Functional asymmetries in youth football players represent significant performance limitations and injury risk factors requiring targeted intervention strategies. Elite youth athletes frequently demonstrate bilateral imbalances across multiple neuromuscular domains. Objective. This st...

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Main Authors: Walid Bouzid, Omar Ben Rakaa, Aziz Chokri, Aziz Eloirdi, Abdelmoujoud Elhaboussi, Mohamed Barkaoui
Format: Article
Language:English
Published: FEADEF 2025-08-01
Series:Retos: Nuevas Tendencias en Educación Física, Deportes y Recreación
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Online Access:https://www.revistaretos.org/index.php/retos/article/view/117056
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author Walid Bouzid
Omar Ben Rakaa
Aziz Chokri
Aziz Eloirdi
Abdelmoujoud Elhaboussi
Mohamed Barkaoui
author_facet Walid Bouzid
Omar Ben Rakaa
Aziz Chokri
Aziz Eloirdi
Abdelmoujoud Elhaboussi
Mohamed Barkaoui
author_sort Walid Bouzid
collection DOAJ
description Background. Functional asymmetries in youth football players represent significant performance limitations and injury risk factors requiring targeted intervention strategies. Elite youth athletes frequently demonstrate bilateral imbalances across multiple neuromuscular domains. Objective. This study evaluated the effectiveness of an individualized 8-week neuromuscular training program in reducing functional asymmetries among elite youth football players across different age categories (U16, U17, U18). Methods. This 8-week experimental intervention aimed to reduce functional asymmetries in balance, unilateral strength, and jump performance among elite youth footballers. Conducted in addition to their regular weekly schedule (five sessions, 8–10 hours football-specific practice + 2–3 hours strength and conditioning), the program comprised two 30–40 min neuromuscular sessions per week. Each session included four blocks: activation & mobility, unilateral strengthening, plyometrics & single-leg jumps, and balance & postural control. Progression was applied systematically through increased load, instability, movement complexity, and football-specific demands, following the principle of progressive overload. Individualization strategies targeted the weaker limb when interlimb differences exceeded 10%, with adjustments based on RPE, mid-term, and final assessments. Results. Significant reductions in functional asymmetries were observed across all variables and age groups. Y-Balance Test asymmetries decreased by 46-60%, Single Leg Hop Test asymmetries reduced by 39-46%, and quadriceps strength asymmetries diminished by 42-47%. Younger players (U16) demonstrated greater magnitude improvements compared to older athletes. Strong correlations existed between different asymmetry measures, supporting multidimensional assessment approaches. Effect sizes ranged from moderate to large across all variables. Conclusion. The individualized neuromuscular training intervention effectively reduced functional asymmetries in youth football players, with age-related response variations supporting developmentally appropriate program design for optimizing athletic performance and injury prevention.
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institution Kabale University
issn 1579-1726
1988-2041
language English
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series Retos: Nuevas Tendencias en Educación Física, Deportes y Recreación
spelling doaj-art-e7c8a3fa1f794a27a95f55864f2c3b0a2025-08-21T01:37:31ZengFEADEFRetos: Nuevas Tendencias en Educación Física, Deportes y Recreación1579-17261988-20412025-08-017010.47197/retos.v70.117056Effect of an 8-week training program on the rebalancing of functional asymmetry in young footballersWalid Bouzid0Omar Ben Rakaa1https://orcid.org/0000-0002-2181-5247Aziz Chokri2Aziz Eloirdi3https://orcid.org/0000-0003-1061-7787Abdelmoujoud Elhaboussi4https://orcid.org/0000-0003-2138-4966Mohamed Barkaoui5Sports Science Research Team, Institute of Sports Science, Hassan 1st University, Settat, MoroccoMultidisciplinary Laboratory in Education Sciences and Training Engineering (LMSEIF). Sport Science Assessment and Physical Activity Didactic. Normal Higher School (ENS-C), Hassan II University of Casablanca, MoroccoSports Science Research Team, Institute of Sports Science, Hassan 1st University, Settat, MoroccoSports Science Research Team, Institute of Sports Science, Hassan 1st University, Settat, MoroccoSports Science Research Team, Institute of Sports Science, Hassan 1st University, Settat, MoroccoSports Science Research Team, Institute of Sports Science, Hassan 1st University, Settat, Morocco Background. Functional asymmetries in youth football players represent significant performance limitations and injury risk factors requiring targeted intervention strategies. Elite youth athletes frequently demonstrate bilateral imbalances across multiple neuromuscular domains. Objective. This study evaluated the effectiveness of an individualized 8-week neuromuscular training program in reducing functional asymmetries among elite youth football players across different age categories (U16, U17, U18). Methods. This 8-week experimental intervention aimed to reduce functional asymmetries in balance, unilateral strength, and jump performance among elite youth footballers. Conducted in addition to their regular weekly schedule (five sessions, 8–10 hours football-specific practice + 2–3 hours strength and conditioning), the program comprised two 30–40 min neuromuscular sessions per week. Each session included four blocks: activation & mobility, unilateral strengthening, plyometrics & single-leg jumps, and balance & postural control. Progression was applied systematically through increased load, instability, movement complexity, and football-specific demands, following the principle of progressive overload. Individualization strategies targeted the weaker limb when interlimb differences exceeded 10%, with adjustments based on RPE, mid-term, and final assessments. Results. Significant reductions in functional asymmetries were observed across all variables and age groups. Y-Balance Test asymmetries decreased by 46-60%, Single Leg Hop Test asymmetries reduced by 39-46%, and quadriceps strength asymmetries diminished by 42-47%. Younger players (U16) demonstrated greater magnitude improvements compared to older athletes. Strong correlations existed between different asymmetry measures, supporting multidimensional assessment approaches. Effect sizes ranged from moderate to large across all variables. Conclusion. The individualized neuromuscular training intervention effectively reduced functional asymmetries in youth football players, with age-related response variations supporting developmentally appropriate program design for optimizing athletic performance and injury prevention. https://www.revistaretos.org/index.php/retos/article/view/117056Functional asymmetryNeuromuscular trainingBilateral deficitY-Balance TestInterlimb asymmetry
spellingShingle Walid Bouzid
Omar Ben Rakaa
Aziz Chokri
Aziz Eloirdi
Abdelmoujoud Elhaboussi
Mohamed Barkaoui
Effect of an 8-week training program on the rebalancing of functional asymmetry in young footballers
Retos: Nuevas Tendencias en Educación Física, Deportes y Recreación
Functional asymmetry
Neuromuscular training
Bilateral deficit
Y-Balance Test
Interlimb asymmetry
title Effect of an 8-week training program on the rebalancing of functional asymmetry in young footballers
title_full Effect of an 8-week training program on the rebalancing of functional asymmetry in young footballers
title_fullStr Effect of an 8-week training program on the rebalancing of functional asymmetry in young footballers
title_full_unstemmed Effect of an 8-week training program on the rebalancing of functional asymmetry in young footballers
title_short Effect of an 8-week training program on the rebalancing of functional asymmetry in young footballers
title_sort effect of an 8 week training program on the rebalancing of functional asymmetry in young footballers
topic Functional asymmetry
Neuromuscular training
Bilateral deficit
Y-Balance Test
Interlimb asymmetry
url https://www.revistaretos.org/index.php/retos/article/view/117056
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