N. P. . Nugroho, D. N. Riyadi, and A. . Haqiyah, “Predictors of cardiorespiratory endurance in martial arts athletes: A path analysis of body composition, hemoglobin, and motivation”, Phys. Educ. Sport. Stud. Res., vol. 4, no. 2, pp. 83-94, Jul. 2025.