Tiaotrakul, A. ., and A. . Wangwonsin. “Improvement of Physical Fitness for Balancing and Fall Prevention in Elderly”. Academic Journal of Thailand National Sports University, vol. 11, no. 1, Jan. 2019, pp. 74-92, https://he02.tci-thaijo.org/index.php/TNSUJournal/article/view/246286.