Hanif, Nak Mas Ashim, and Januar Abdilah Santoso. 2026. “The Effect of Personal Challenge-Based Gamification on Physical Fitness Among Elementary School Students: A Quasi-Experimental Study: Studi Kuasi-Eksperimental”. Jurnal Porkes 9 (2):710–721. https://doi.org/10.29408/porkes.v9i2.31360.