Anik Maryani, Fahmy Fachrezzy, and Ramdan Pelana. 2021. “The Effectiveness of Mix Impact Aerobic Gymnastics Exercises With SKJ 2000 On Improvement of Physical Freshness”. Gladi : Jurnal Ilmu Keolahragaan 12 (03):39-44. https://doi.org/10.21009/GJIK.123.06.