2025. 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, 2 (Aug. 2025), 1617–1627. DOI:https://doi.org/10.26858/cjpko.v17i2.238.