Special Issue "Sports Science in Children" by Diogo Coutinho, Bruno Travassos, Sara Santos, Pedro Figueiredo, Adam Leigh Kelly

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The Influence of Contextual Factors on the Relative Age Effect in Male International Rugby Union: The Impact of Sociocultural Influences and Playing Position by Paolo Riccardo Brustio, Adam Leigh Kelly, Corrado Lupo, Alexandru Nicolae Ungureanu

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Exploring the Effects of Tasks with Different Decision-Making Levels on Ball Control, Passing Performance, and External Load in Youth Football by Diogo Coutinho, Adam Leigh Kelly, Sara Santos, Pedro Figueiredo, David Pizarro, Bruno Travassos

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Special Issue "Talent Identification and Development in Youth Sports" by Adam Leigh Kelly, Alberto Lorenzo Calvo, Sara Diana Leal dos Santos, Sergio Lorenzo Jiménez Sáiz

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Career trajectories, transition rates, and birthdate distributions: the rocky road from youth to senior level in men's European football by Paolo Riccardo Brustio, Paolo Riccardo Brustio, Alexander B. T. McAuley, Alexandru Nicolae Ungureanu, Adam Leigh Kelly

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Relative Age Effects and Place of Early Development Constrain Male Youth Italian Swimmers' Developmental Experiences by Gabriele Morganti, Adam Leigh Kelly, Matteo Vitarelli, Francesca Strassoldo di Villanova, Bruno Ruscello, Francesca Campoli, Elvira Padua

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