“The Relationship Between Aerobic Endurance and Haemoglobin of Junior High School Football Players 26 Makassar”, Compet. J. Pendidik. Kepelatihan Olahraga, vol. 17, no. 1, pp. 138–144, Feb. 2025, Accessed: Mar. 19, 2026. [Online]. Available: https://competitor.idjournal.eu/index.php/competitor/article/view/174