Janprakhon, Theerasak, and Napasakorn Chuensiri. 2023. “EFFECTS OF SPEED LADDER TRAINING ON BALANCE AND VARIOUS ASPECTS OF PHYSICAL FITNESS IN OLDER”. Journal of Sports Science and Health 24 (3). Bangkok, Thailand:78-92. https://he02.tci-thaijo.org/index.php/spsc_journal/article/view/265972.