The relative age effect in young athletes: A countywide analysis of 9–14-year-old participants in all competitive sports

• Susana M. Gil ,

  Roles Conceptualization, Data curation, Formal analysis, Funding acquisition, Investigation, Methodology, Project administration, Supervision, Visualization, Writing – original draft, Writing – review & editing

  * E-mail: susana.gil@ehu.eus

  Affiliation Department of Physiology, Faculty of Medicine and Nursing, University of the Basque Country (UPV/EHU), Leioa, Spain

  https://orcid.org/0000-0003-0596-7627

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• Iraia Bidaurrazaga-Letona,

  Roles Conceptualization, Data curation, Formal analysis, Investigation, Methodology, Writing – review & editing

  Affiliation Department of Physiology, Faculty of Medicine and Nursing, University of the Basque Country (UPV/EHU), Leioa, Spain

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• Jon Larruskain,

  Roles Conceptualization, Data curation, Formal analysis, Methodology, Writing – review & editing

  Affiliation Medical Services, Athletic Club, Lezama, Spain

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• Izaro Esain,

  Roles Data curation, Formal analysis, Methodology, Writing – original draft, Writing – review & editing

  Affiliation Department of Physiology, Faculty of Medicine and Nursing, University of the Basque Country (UPV/EHU), Leioa, Spain

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• Jon Irazusta

  Roles Conceptualization, Formal analysis, Investigation, Methodology, Supervision, Visualization, Writing – original draft, Writing – review & editing

  Affiliation Department of Physiology, Faculty of Medicine and Nursing, University of the Basque Country (UPV/EHU), Leioa, Spain

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