Sopyan M, Raharjo BB, Kusuma DWY. The Effect Of High-Intensity Interval Training And Fartlek On Vo2max Players U15 And U23 Pamoso Football School. JUARA [Internet]. 2023Apr.8 [cited 2024Nov.21];8(1):556-68. Available from: https://jurnal.upmk.ac.id/index.php/juara/article/view/2813