AUTHOR=Aliberti Sara , D’Elia Francesca , Giardullo Giuseppe , Raiola Gaetano TITLE=Agonism and performance in adolescent football players in informal physical education settings JOURNAL=Frontiers in Sports and Active Living VOLUME=7 YEAR=2025 URL=https://www.frontiersin.org/journals/sports-and-active-living/articles/10.3389/fspor.2025.1511719 DOI=10.3389/fspor.2025.1511719 ISSN=2624-9367