The Effect Of Anaerobic Ability Training On Some Metabolic Stress Outcomes (Urea, Ammonia) And Complex Skill Performance Endurance In Young Boxers. JPKO [Internet]. 2026 Aug. 24 [cited 2026 Oct. 24];2(3):75-86. Available from: http://journalpejuang.web.id/index.php/jurnalpkopejuang/article/view/160