MULYADI, Hendri and INDAH, Debby. The Effect of Exercise Methods on Variations and Strengths of Explosive Muscle Power of The Power of 100 meters of Running Capability in State Middle School 1 Rambah Rokan Hulu Regency. Journal of Education, Health and Sport. Online. 28 July 2019. Vol. 9, no. 7, pp. 626-630. [Accessed 16 April 2025].