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Impact of Plyometric Training Methods on Athletic Performance and Detraining Processes in Youth Female Soccer Players

10 de julho de 2026 atualizado por: Fatih GUR, Pamukkale University
Lower extremity strength, explosive power, dynamic balance, and functional range of motion are critical determinants of athletic performance and injury prevention in soccer (football). While plyometric training is widely used to improve these qualities, the comparative effects of bodyweight plyometric training versus externally loaded plyometric training, and the maintenance of these effects during detraining periods, remain unclear. This study aims to investigate the effects of two different plyometric training methods on athletic performance and subsequent detraining processes in young female soccer players. Participants will be randomly assigned to three groups: Bodyweight Plyometric Training Group (BW-PT), External Loading Plyometric Training Group (EL-PT, who will wear vests weighing 10% of their body weight), and Control Group (CG, who will only continue with routine soccer training). Training interventions will be conducted for 6 weeks, immediately followed by a 4-week detraining period. To comprehensively assess athletic performance, the following measurements will be taken at baseline (pre-test), immediately after the training period (post-test), and after the detraining period (maintenance test): Isokinetic muscle strength of knee extensors and flexors (peak torque and force development rate at 60°/s and 120°/s), Jumping performance (standing long jump, vertical jump height, and 15-second repeated jump test), Functional range of motion (via Functional Movement Screen - FMS), Dynamic balance (via Y-Balance Test). The primary objective is to determine which plyometric loading strategy, compared to traditional soccer training, provides superior and longer-lasting physiological and biomechanical adaptations in young female athletes.

Visão geral do estudo

Status

Ainda não está recrutando

Condições

Intervenção / Tratamento

Tipo de estudo

Intervencional

Inscrição (Estimado)

36

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.

Contato de estudo

Locais de estudo

  • Turquia (Türkiye)
    • Denizli
      • Denizli, Denizli, Turquia (Türkiye), 20160
        • Pamukkale University, Faculty of Sport Sciences
        • Contato:

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

Sim

Descrição

Inclusion Criteria:

  • No history of surgery due to musculoskeletal injuries within the past 6 months.
  • No use of ergogenic supplements within the past 3 months.
  • Regular participation in routine team training sessions for at least 2 months prior to the study.

Exclusion Criteria:

  • History of any recent injury requiring a recovery period of more than one week.
  • Use of ergogenic aids or nutritional supplements during the intervention period.
  • Missing two consecutive or four non-consecutive training sessions during the study period.
  • Participation in additional structured physical training or exercises outside of the routine team practices and the study protocol.

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: Ciência básica
  • Alocação: Randomizado
  • Modelo Intervencional: Atribuição Paralela
  • Mascaramento: Nenhum (rótulo aberto)

Armas e Intervenções

Grupo de Participantes / Braço
Intervenção / Tratamento
Experimental: Body-Weight Plyometric Training Group
Participants in this group will perform plyometric training using only their own body weight.
Outro: Body-Weight Plyometrics
A structured plyometric training program performed twice a week for six weeks. Exercises include various jumps and bounds using only the participant's body weight. Each session lasts approximately 30 minutes.
Experimental: Plyometric Training Group With Additional Load
Participants in this group will perform plyometric training while wearing a weighted vest equal to 10% of their body weight.
Outro: Additional Loaded Plyometric
A structured plyometric training program performed twice a week for six weeks. Participants will wear a weighted vest equivalent to 10% of their body weight during the exercises. Each session lasts approximately 30 minutes.
Comparador Ativo: Control Group
Participants in this group will continue their routine football training without any additional plyometric exercises.
Outro: Routine Football Training
Participants in this group will continue to perform their standard, routine football training sessions. They will not receive any additional or structured plyometric training program during the intervention period.

O que o estudo está medindo?

Medidas de resultados primários

Medida de resultado
Descrição da medida
Prazo
Absolute Peak Torque (APT) of Knee Extensors and Flexors
Prazo: Baseline (Week 0), immediately post-training (Week 6), and after the detraining period (2nd and 4th week).
Concentric isokinetic absolute peak torque (APT) of the knee extensors and flexors (dominant leg) will be evaluated at 60°/s and 120°/s angular velocities using a Cybex Humac Norm dynamometer during 5 maximal repetitions. (Unit of measure: Nm)
Baseline (Week 0), immediately post-training (Week 6), and after the detraining period (2nd and 4th week).
Relative Peak Torque (RPT) of Knee Extensors and Flexors
Prazo: Baseline (Week 0), immediately post-training (Week 6), and after the detraining period (2nd and 4th week).
Concentric isokinetic relative peak torque (RPT) of the knee extensors and flexors (dominant leg) will be evaluated at 60°/s and 120°/s angular velocities using a Cybex Humac Norm dynamometer during 5 maximal repetitions. (Unit of measure: Nm/kg)
Baseline (Week 0), immediately post-training (Week 6), and after the detraining period (2nd and 4th week).
Time to Peak Torque (TPT) of Knee Extensors and Flexors
Prazo: Baseline (Week 0), immediately post-training (Week 6), and after the detraining period (2nd and 4th week).
Concentric isokinetic time to peak torque (TPT) of the knee extensors and flexors (dominant leg) will be evaluated at 60°/s and 120°/s angular velocities using a Cybex Humac Norm dynamometer during 5 maximal repetitions. (Unit of measure: milliseconds)
Baseline (Week 0), immediately post-training (Week 6), and after the detraining period (2nd and 4th week).
Average Peak Torque (AvPT) of Knee Extensors and Flexors
Prazo: Baseline (Week 0), immediately post-training (Week 6), and after the detraining period (2nd and 4th week).
Concentric isokinetic average peak torque (AvPT) of the knee extensors and flexors (dominant leg) will be evaluated at 60°/s and 120°/s angular velocities using a Cybex Humac Norm dynamometer during 5 maximal repetitions. (Unit of measure: Nm)
Baseline (Week 0), immediately post-training (Week 6), and after the detraining period (2nd and 4th week).
Average Rate of Force Development (AvRFD) of Knee Extensors and Flexors
Prazo: Baseline (Week 0), immediately post-training (Week 6), and after the detraining period (2nd and 4th week).
Concentric isokinetic average rate of force development (AvRFD) of the knee extensors and flexors (dominant leg) will be evaluated at 60°/s and 120°/s angular velocities using a Cybex Humac Norm dynamometer during 5 maximal repetitions. (Unit of measure: Nm/s)
Baseline (Week 0), immediately post-training (Week 6), and after the detraining period (2nd and 4th week).
Vertical Jump Height (VJH)
Prazo: Baseline (Week 0), immediately post-training (Week 6), and after the detraining period (2nd and 4th week).
Vertical jump height calculated from flight time will be evaluated using an electronic contact mat system (Fusion SmartJump, Fusion Sport, Australia). Participants will perform a countermovement jump without arm swing. The best value from 3 repetitions, separated by 1-minute rest intervals, will be recorded. (Unit of measure: cm)
Baseline (Week 0), immediately post-training (Week 6), and after the detraining period (2nd and 4th week).
Standing Long Jump (SLJ) Distance
Prazo: Baseline (Week 0), immediately post-training (Week 6), and after the detraining period (2nd and 4th week).
Horizontal jump distance will be assessed. Participants will perform a maximum distance jump with two feet from behind a starting line. The best value from 3 repetitions will be recorded. (Unit of measure: cm)
Baseline (Week 0), immediately post-training (Week 6), and after the detraining period (2nd and 4th week).
15-Second Repeated Jump Test: Average Power (RJ15s-AP)
Prazo: Baseline (Week 0), immediately post-training (Week 6), and after the detraining period (2nd and 4th week).
Average power (RJ15s-AP) will be evaluated during 15 seconds of continuous maximal vertical jumps using an electronic contact mat system (Fusion SmartJump, Fusion Sport, Australia). Participants will jump with hands on hips and an upright trunk. The value is calculated using the Bosco equation. (Unit of Measure: W)
Baseline (Week 0), immediately post-training (Week 6), and after the detraining period (2nd and 4th week).
15-Second Repeated Jump Test: Flight Time (RJ15s-FT)
Prazo: Baseline (Week 0), immediately post-training (Week 6), and after the detraining period (2nd and 4th week).
Flight time (RJ15s-FT) will be evaluated during 15 seconds of continuous maximal vertical jumps using an electronic contact mat system (Fusion SmartJump, Fusion Sport, Australia). Participants will jump with hands on hips and an upright trunk. The value is calculated using the Bosco equation. (Unit of Measure: ms)
Baseline (Week 0), immediately post-training (Week 6), and after the detraining period (2nd and 4th week).
15-Second Repeated Jump Test: Number of Jumps (N-RJ15s)
Prazo: Baseline (Week 0), immediately post-training (Week 6), and after the detraining period (2nd and 4th week).
The number of jumps (N-RJ15s) will be evaluated during 15 seconds of continuous maximal vertical jumps using an electronic contact mat system (Fusion SmartJump, Fusion Sport, Australia). Participants will jump with hands on hips and an upright trunk. (Unit of Measure: Count)
Baseline (Week 0), immediately post-training (Week 6), and after the detraining period (2nd and 4th week).

Medidas de resultados secundários

Medida de resultado
Descrição da medida
Prazo
Functional Movement Capacity
Prazo: Baseline (Week 0), immediately post-training (Week 6), and after the detraining period (2nd and 4th week).
Functional movement capacity and potential asymmetries will be evaluated using the Functional Movement Screen (FMS) kit, which consists of 7 movement patterns scored from 0 to 3 (max total score: 21). (Unit of measure: Score on a scale from 0 to 21)
Baseline (Week 0), immediately post-training (Week 6), and after the detraining period (2nd and 4th week).
Dynamic Balance and Neuromuscular Control
Prazo: Baseline (Week 0), immediately post-training (Week 6), and after the detraining period (2nd and 4th week).
Dynamic balance will be measured using the Y-Balance Test kit. Reach distances in three directions will be normalized to the participant's leg length to assess lower extremity neuromuscular control and asymmetry. (Unit of measure: Percentage)
Baseline (Week 0), immediately post-training (Week 6), and after the detraining period (2nd and 4th week).

Colaboradores e Investigadores

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

Patrocinador

Pamukkale University

Investigadores

  • Investigador principal: GUR, Pamukkale University

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 (Estimado)

20 de julho de 2026

Conclusão Primária (Estimado)

19 de outubro de 2026

Conclusão do estudo (Estimado)

19 de outubro de 2026

Datas de inscrição no estudo

Enviado pela primeira vez

2 de julho de 2026

Enviado pela primeira vez que atendeu aos critérios de CQ

10 de julho de 2026

Primeira postagem (Real)

15 de julho de 2026

Atualizações de registro de estudo

Última Atualização Postada (Real)

15 de julho de 2026

Última atualização enviada que atendeu aos critérios de controle de qualidade

10 de julho de 2026

Última verificação

1 de julho de 2026

Mais Informações

Termos relacionados a este estudo

Palavras-chave

Outros números de identificação do estudo

  • E-60116787-020-811428
  • 2026TAP009 (Número de outro subsídio/financiamento: Pamukkale University Scientific Research Projects Coordination Unit)

Plano para dados de participantes individuais (IPD)

Planeja compartilhar dados de participantes individuais (IPD)?

NÃO

Descrição do plano IPD

Individual participant data (IPD) will not be shared. The informed consent obtained from the participants does not include provisions for public data sharing. Furthermore, preserving the privacy and complete anonymization of the participants in this small, cohort-specific sports science study is a priority, which restricts the feasibility of sharing individual-level data.

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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