M. A. E. Fahrudin, S. Wahyudati, and R. I. A. Putri, “Effectiveness of Adding Lower Extremity Strengthening Exercises on Cardiorespiratory Fitness Improvement of Hajj Pilgrims Candidate”, J Indon Med Assoc, vol. 75, no. 2, pp. 88 - 94, Jun. 2025.