The Effect of Interval Training and Fartlek Training on VO2Max of MA Syekh Yusuf Futsal Extracurricular Participants in Motivation. (2025). COMPETITOR: Jurnal Pendidikan Kepelatihan Olahraga, 17(3), 2185-2195. https://doi.org/10.26858/cjpko.v17i3.421