“The Effect of Resistance Training Using Used Car Tires On The Improvement of 100-Meter Sprint Speed”, Compet. J. Pendidik. Kepelatihan Olahraga, vol. 18, no. 1, pp. 1022–1031, Feb. 2026, Accessed: Feb. 21, 2026. [Online]. Available: https://competitor.idjournal.eu/index.php/competitor/article/view/596