Dr.Hashim Shakir Abdulkareem, Dr. Abdullah Shanta Faraj, Dr. Imad Faraj Badrawi, Dr. Hussam mohamid jabber. THE EFFECT OF FARTLEK TRAINING ON SPECIAL ENDURANCE AND DIGITAL ACHIEVEMENT OF EFFECTIVENESS 4 X 400 RELAY. Euro. J. Hum. Edu. Adv. [Internet]. 2022Oct.23 [cited 2025Jan.9];3(10):144-8. Available from: https://scholarzest.com/index.php/ejhea/article/view/2823