M. Mas’adah, D. Tinduh, N. Sulastri, and S. W. Mudjanarko, “The Effects of Moderate Intensity Treadmill Exercise with Gradual Increase of Speed and Inclination on VO2max in Men with Type 2 Diabetes Mellitus”, SPMRJ, vol. 3, no. 2, pp. 53–59, Aug. 2021.