The Relationship between Physical Fitness Level and Pulse Rate, and Blood Pressure in 8th Grade Students of MTS Nurul Ulum Welahan. Compet. J. Pendidik. Kepelatihan Olahraga. 2025;17(2):1743-1753. Accessed March 19, 2026. https://competitor.idjournal.eu/index.php/competitor/article/view/254