The Influence of Age and Maturation on Trajectories of Stretch-Shortening Cycle Capability in Male Youth Team Sports.
Pediatr Exerc Sci
; 33(1): 16-22, 2021 03 14.
Article
em En
| MEDLINE
| ID: mdl-33721841
ABSTRACT
PURPOSE:
To examine the influence of growth and maturation in the trajectory of stretch-shortening cycle capability.METHOD:
Using a mixed-longitudinal design, absolute and relative leg stiffness and reactive strength index (RSI) were measured 3 times over a 3-year period in 44 youth team-sport players. Maturation was determined as maturity offset and included within the Bayesian inference analysis as a covariate alongside chronological age.RESULTS:
Irrespective of age and maturation, there was no change in absolute leg stiffness, however relative leg stiffness decreased over time. Maturation and age reduced this decline, but the decline remained significant (Bayesian factor [10] = 5097, model averaged R2 = .61). The RSI increased over time and more so in older more mature youth players (Bayesian factor [10] = 9.29e8, model averaged R2 = .657).CONCLUSION:
In youth players who are at/post peak height velocity, relative leg stiffness appears to decline, which could have an impact on both performance and injury risk. However, RSI increases during this period, and these data reinforce that leg stiffness and RSI reflect different components of stretch-shortening cycle capability. Practitioners should consider these differences when planning training to maximize stretch-shortening cycle capability during growth and maturation in athletes on the developmental performance pathway.Palavras-chave
Texto completo:
1
Base de dados:
MEDLINE
Assunto principal:
Músculo Esquelético
/
Atletas
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Perna (Membro)
/
Contração Muscular
Tipo de estudo:
Observational_studies
/
Prognostic_studies
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Risk_factors_studies
Limite:
Adolescent
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Humans
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Male
Idioma:
En
Revista:
Pediatr Exerc Sci
Ano de publicação:
2021
Tipo de documento:
Article