syah, Fais, 		Febriani, Ayu, 		Aggraeni, Dewi, 		Kusuma, Mohammad Nanang, AND 		Mulyani, Jajang.
" The Effect of Fartlek Training on the Increase of Cardiorespiratory Endurance in Kumite Karateka of the Gokasi  Student Activity Unit Unsoed" <em>Physical Activity Journal (PAJU)</em> [Online], Volume 7 Number 1 (30 April 2025)