Mohammd Fathan Mubina et al. 2021. The Effect of Plyometric Training up and downstairs and obstacle jumping on the improvement of squat style long jump results for male participants in the DKI Jakarta Athletic Club. Gladi : Jurnal Ilmu Keolahragaan. 12, 03 (Jul. 2021), 25–33. DOI:https://doi.org/10.21009/GJIK.123.04.