Prasetyo, Yudik, Muchsin Doewes, Noer Rahma, and Sapja Anantanyu. 2017. “Effects of Aerobic Exercise and Weight Training-Aerobic towards Physical Fitness of Elderly Hajj Candidates”. International Journal on Advanced Science, Engineering and Information Technology 7 (1):106-17. https://doi.org/10.18517/ijaseit.7.1.1446.