“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, no. 2 (June 25, 2025): 1099–1110. Accessed September 5, 2025. https://competitor.idjournal.eu/index.php/competitor/article/view/66.