Swandana, Atika, Sugiharto Sugiharto, and Imam Ciptaning Wahyu. “Development of Reaction Speed and Endurance Training Tools for Taekwondo Kick Speeds Using Pyongyo”. Journal of Physical Education and Sports 10, no. 1 (March 31, 2021): 8-16. Accessed November 22, 2024. https://journal.unnes.ac.id/sju/jpes/article/view/44385.