Harvina Mukrim, and Muslim Bin Ilyas. “A Comprehensive Review: The Correlation Between Intensive Aerobix Exercise and Maximum Heart Rate in Athletes”. Journal Physical Health Recreation (JPHR) 5, no. 2 (May 31, 2025): 430–434. Accessed August 18, 2026. https://jurnal.stokbinaguna.ac.id/index.php/JPHR/article/view/3962.