The Relationship Between Aerobic Endurance and Haemoglobin of Junior High School Football Players 26 Makassar. Compet. J. Pendidik. Kepelatihan Olahraga [Internet]. 2025 Feb. 28 [cited 2025 Jul. 18];17(1):138-44. Available from: https://competitor.idjournal.eu/index.php/competitor/article/view/174