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    This study found that balance, jumping power, and reactive strength significantly predict agility in young boys. Bilateral side jumps were the strongest indicator across multiple agility tests.

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    Area of Science:

    • Sports Science
    • Pediatric Physiology
    • Motor Control

    Background:

    • Agility is crucial for athletic performance in early pubescent boys.
    • Understanding the key physical predictors of agility can inform training programs.
    • Previous research has explored various factors, but specific relationships in this age group require further elucidation.

    Purpose of the Study:

    • To investigate the influence of balance, jumping power, reactive strength, speed, and morphological variables on agility performance.
    • To identify the most significant predictors of five distinct agility tests in early pubescent males.
    • To establish predictive models for agility performance in this demographic.

    Main Methods:

    • Seventy-one early pubescent boys participated in the study.
    • Predictor variables included anthropometrics, jump tests (countermovement, broad, bilateral side jumps), stability index, and sprint tests.
    • Forward stepwise regression analysis was used to determine the relationship between predictors and agility performance.

    Main Results:

    • Predictive models explained between 44% and 62% of the variance in agility performance across five tests.
    • The bilateral side jumps test emerged as the single best predictor of agility.
    • Cross-validation showed significant predictive power, though with limitations for continuous-movement tests like the zig-zag.

    Conclusions:

    • Physical attributes like reactive strength, particularly demonstrated by bilateral side jumps, are strong determinants of agility in young boys.
    • The findings suggest that targeted training focusing on these physical qualities could enhance agility.
    • Further research is recommended to explore additional predictors and refine agility assessment in this population.