“The Effect of Uphill Running And Ladder Drill Training On 50 M Sprint Running Speed of Grade VII Students At SMPN 2 Palu”. COMPETITOR: Jurnal Pendidikan Kepelatihan Olahraga 17, no. 2 (August 6, 2025): 1617–1627. Accessed August 24, 2025. https://competitor.idjournal.eu/index.php/competitor/article/view/238.