article 2025 17 pages The Effect of Varied Fartlek Method Exercises on VO2max and Specific Endurance in Young Football Players Ahmed Qasim Kadhim JournalPubmedia Jurnal Pendidikan OlahragaDOI10.47134/jpo.v2i4.1949Study typeexperimentalPopulationyoung football players View on DOI ↗