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This study aimed to improve the prediction accuracy of age at peak height velocity (APHV) from anthropometric assessment using nonlinear models and a maturity ratio rather than a maturity offset. The dataset used to develop the original prediction equations was used to test a new prediction model, utilizing the maturity ratio and a polynomial prediction equation. This model was then applied to a sample of male youth academy soccer players ( n  = 1330) to validate the new model in youth athletes. A new equation was developed to estimate APHV more accurately than the original model (new model: Akaike information criterion: −6062.1, R ²  = 90.82%; original model: Akaike information criterion = 3048.7, R ²  = 88.88%) within a general …