Andriana, Laily Mita, and Arif Rahman Nurdianto. “Tai Chi Exercise Is Better Than Low-Intensity Steady-State Cardio for Improving Physical Fitness and Sleep Quality in the Elderly”. Jurnal SPORTIF : Jurnal Penelitian Pembelajaran 8, no. 4 (December 27, 2022): 405-425. Accessed May 3, 2024. https://ojs.unpkediri.ac.id/index.php/pjk/article/view/18921.