Erfita Anasha Wiraida and Sarah Handayani (2025) “The Effect of Caffeine on VO2max in Adolescent Athletes”, i-Core: International Journal of Sport Science, 1(2), pp. 53–60. Available at: https://journals.stokbinaguna.ac.id/index.php/i-core/article/view/5888 (Accessed: 14 August 2026).