The Effectiveness of High-Intensity Interval Training (HIIT) in Enhancing the Aerobic Endurance of Karate Specialization Students at PKO FIK UNIMED. JCES [Internet]. 2026 May 1 [cited 2026 May 3];7(1):22-30. Available from: https://ejurnal.ubharajaya.ac.id/index.php/JCESPORTS/article/view/5348