“The Effect Of Anaerobic Ability Training On Some Metabolic Stress Outcomes (Urea, Ammonia) And Complex Skill Performance Endurance In Young Boxers”. Jurnal Pendidikan Kepelatihan Olahraga: PEJUANG, vol. 2, no. 3, Aug. 2026, pp. 75-86, https://doi.org/10.66968/pejuang.