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Influence of Core Training on Fatigue, Balance and Performance in Adolescent Football Players

6 de maio de 2026 atualizado por: Ahmed Rageh Saber Ali, Cairo University

Influence of Core Training on Fatigue, Balance and Performance in Adolescent Football Players (Randomized Controlled Trial)

Background:

Adolescent football players are exposed to high physical and psychological demands due to intensive training, frequent matches, travel, and limited recovery time. These factors can lead to early fatigue, reduced balance, and lower technical performance, all of which may increase the risk of non-contact injuries. The muscles of the trunk (core muscles) help stabilize the spine and pelvis, transfer forces between the upper and lower limbs, and maintain postural control during sport-specific movements. Weak core stability has been linked to poorer balance, reduced fatigue resistance, and suboptimal performance. Although core training is widely used in sports, there is limited evidence on its combined effects on fatigue, balance, and football-specific performance in adolescent players.

Objectives:

This randomized controlled trial aims to examine whether an 8-week core training program can improve fatigue resistance, balance, and football performance in adolescent football players compared with usual training alone.

Methods:

This is a pre-post, parallel-group randomized controlled trial conducted at Wadi Degla Football Club. Eligible participants are male adolescent football players aged 14-18 years from the 2005, 2006, and 2007 teams, who train regularly (at least 6 hours per week), have a body mass index between 18.5 and 24.9 kg/m², and have been free from lower-limb injury or surgery for at least 6 months. Players with recent major lower-limb injuries, surgery, or irregular training will be excluded.

Participants will be randomly allocated into two groups using computer-generated random numbers: (1) a core-training group, which receives an 8-week structured core exercise program in addition to their usual football training, and (2) a control group, which continues usual football training without additional core exercises. Both groups will be assessed before and after the intervention period. Outcome measures will include fatigue-related performance, static and/or dynamic balance, and football-specific performance tests.

Potential Benefits and Risks:

The study may help clarify whether adding core training to routine football practice can enhance fatigue resistance, balance, and functional performance in adolescent football players and potentially reduce injury risk. The exercises are commonly used in sports settings and are considered low risk for healthy athletes; no significant risks beyond normal football training are anticipated. Participation is voluntary, and players may withdraw from the study at any time without any consequences for their team status or medical care.

Visão geral do estudo

Descrição detalhada

Background and Rationale:

Adolescent football players are exposed to increasing physical and psychological demands due to intensive training schedules, frequent competition, and limited recovery. These demands may contribute to early fatigue, impaired balance, and reduced technical performance, potentially increasing the risk of non-contact musculoskeletal injuries. Additionally, growth-related changes and ongoing neuromuscular development during adolescence may further affect movement control and performance consistency.

The core musculature, including the abdominal, lumbar, pelvic, and hip muscles, plays a fundamental role in trunk stabilization, force transmission, and postural control during football-specific activities such as sprinting, cutting, kicking, and landing. Adequate core stability is considered important for maintaining movement efficiency and performance, particularly under conditions of fatigue. Conversely, insufficient core control has been associated with impaired balance and suboptimal functional performance.

Although core training is widely implemented in sports conditioning programs, current evidence regarding its effectiveness in adolescent football players remains limited and inconclusive. In particular, the combined effects of core training on fatigue resistance, balance, and football-specific performance are not well established in this population. Therefore, further research is needed to determine whether integrating structured core exercises into routine football training provides meaningful additional benefits.

Study Design Overview This study is a randomized controlled trial designed to investigate the effects of an 8-week structured core training program in adolescent football players. The intervention is integrated within a real-world club training environment, allowing for practical applicability of the findings.

Participants will be allocated to either a core training group or a control condition involving routine football training. The study follows a pre-post design to evaluate changes over time and to compare outcomes between groups.

Significance:

The findings of this study are expected to contribute to the evidence base guiding training and injury prevention strategies in youth football. Clarifying the role of core training may support coaches, physiotherapists, and strength and conditioning professionals in optimizing performance development and reducing injury risk in adolescent players.

Tipo de estudo

Intervencional

Inscrição (Real)

40

Estágio

  • Não aplicável

Contactos e Locais

Esta seção fornece os detalhes de contato para aqueles que conduzem o estudo e informações sobre onde este estudo está sendo realizado.

Locais de estudo

    • Giza Governorate
      • Giza, Giza Governorate, Egito, 12613
        • Cairo University

Critérios de participação

Os pesquisadores procuram pessoas que se encaixem em uma determinada descrição, chamada de critérios de elegibilidade. Alguns exemplos desses critérios são a condição geral de saúde de uma pessoa ou tratamentos anteriores.

Critérios de elegibilidade

Idades elegíveis para estudo

  • Filho
  • Adulto

Aceita Voluntários Saudáveis

Não

Descrição

Inclusion Criteria:

  • Male adolescent football players aged 14-18 years
  • Registered players from Wadi Degla football teams
  • Free from lower limb injuries for at least 6 months before the start of the study
  • Body mass index between 18.5 and 24.9 kg/m²
  • Regular participation in football training for at least 6 hours per week

Exclusion Criteria:

  • Not regularly participating in football training for at least 6 hours per week
  • History of major lower limb injury within the last 6 months
  • History of lower limb surgery before the study period

Plano de estudo

Esta seção fornece detalhes do plano de estudo, incluindo como o estudo é projetado e o que o estudo está medindo.

Como o estudo é projetado?

Detalhes do projeto

  • Finalidade Principal: Prevenção
  • Alocação: Randomizado
  • Modelo Intervencional: Atribuição Paralela
  • Mascaramento: Solteiro

Armas e Intervenções

Grupo de Participantes / Braço
Intervenção / Tratamento
Experimental: Core Training Group
Adolescent football players receiving an 8-week structured core training program in addition to their usual football training.
An 8-week core stability training program including trunk strengthening and stabilization exercises performed in addition to the players' usual football training, three sessions per week under supervision.
Sem intervenção: Control Group
Adolescent football players continuing their usual football training without the additional core training program.

O que o estudo está medindo?

Medidas de resultados primários

Medida de resultado
Descrição da medida
Prazo
Change in fatigue-related performance
Prazo: Baseline and after 8 weeks of training
Change in fatigue-related performance of adolescent football players from baseline to 8 weeks, assessed using a standardized field-based fatigue protocol fatigue index appropriate for youth football. Higher post-training scores indicate better fatigue resistance.
Baseline and after 8 weeks of training

Medidas de resultados secundários

Medida de resultado
Descrição da medida
Prazo
Change in balance performance
Prazo: Baseline and after 8 weeks of training
Change in balance performance from baseline to 8 weeks, assessed using standardized balance tests suitable for adolescent football players. Balance will be measured before and after the 8-week core training period to determine the effect of core training on balance in adolescent football players.
Baseline and after 8 weeks of training

Colaboradores e Investigadores

É aqui que você encontrará pessoas e organizações envolvidas com este estudo.

Patrocinador

Investigadores

  • Investigador principal: Ahmed Torad, Phd, Departement of basic sciences, faculty of physical therapy, kafrelsheikh university
  • Diretor de estudo: Ahmed Saber Rageh, PhD, Department of Physical Therapy, School of Health, Sport and Bioscience, University of East London branch at European Universities in Egypt (EUE).

Datas de registro do estudo

Essas datas acompanham o progresso do registro do estudo e os envios de resumo dos resultados para ClinicalTrials.gov. Os registros do estudo e os resultados relatados são revisados ​​pela National Library of Medicine (NLM) para garantir que atendam aos padrões específicos de controle de qualidade antes de serem publicados no site público.

Datas Principais do Estudo

Início do estudo (Real)

7 de novembro de 2025

Conclusão Primária (Real)

11 de fevereiro de 2026

Conclusão do estudo (Real)

21 de abril de 2026

Datas de inscrição no estudo

Enviado pela primeira vez

24 de abril de 2026

Enviado pela primeira vez que atendeu aos critérios de CQ

24 de abril de 2026

Primeira postagem (Real)

1 de maio de 2026

Atualizações de registro de estudo

Última Atualização Postada (Real)

11 de maio de 2026

Última atualização enviada que atendeu aos critérios de controle de qualidade

6 de maio de 2026

Última verificação

1 de maio de 2026

Mais Informações

Termos relacionados a este estudo

Plano para dados de participantes individuais (IPD)

Planeja compartilhar dados de participantes individuais (IPD)?

NÃO

Descrição do plano IPD

There is no current plan to share individual participant data (IPD) from this trial. Aggregated results will be reported in scientific publications and conference presentations.

Informações sobre medicamentos e dispositivos, documentos de estudo

Estuda um medicamento regulamentado pela FDA dos EUA

Não

Estuda um produto de dispositivo regulamentado pela FDA dos EUA

Não

Essas informações foram obtidas diretamente do site clinicaltrials.gov sem nenhuma alteração. Se você tiver alguma solicitação para alterar, remover ou atualizar os detalhes do seu estudo, entre em contato com register@clinicaltrials.gov. Assim que uma alteração for implementada em clinicaltrials.gov, ela também será atualizada automaticamente em nosso site .

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