Anwarudin, Muhammad, Muhammad Iqbal, and Tri Bayu Norito. 2020. “Correlation of Blood Muscle Strength and Waist Flexibility to students’ Roundhouse Kick Skills in Putera Sekar (Pencak Silat) Academy”. ETUDE: Journal of Educational Research 1 (1):7-12. https://doi.org/10.56724/etude.v1i1.16.