2025. Utilization of an Inclined Plane to Increase the Efficiency of Forward Roll on Class IV Students at Paringin 2 State Elementary School. COMPETITOR: Jurnal Pendidikan Kepelatihan Olahraga. 17, 2 (Jun. 2025), 1099–1110. DOI:https://doi.org/10.26858/cjpko.v17i2.74120.