MUSLIM, Kalimasada Akbar; HIMAWAN, Agus; HANDAYANI, Heni Yuli; PURWOTO, Septyaningrum Putri; WIDODO, Haryo Mukti. The Impact of Fartlek Training on Endurance and Speed Development in Amateur Futsal Players. Journal of Sport and Exercise Science, [S. l.], v. 8, n. 1, p. 18–24, 2025. DOI: 10.26740/jses.v8n1.p18-24. Disponível em: https://journal.unesa.ac.id/index.php/jses/article/view/39133. Acesso em: 11 dec. 2025.