“Comparison of Flight Time Based on Jump Amplitude in the 540° Back-Turn Technique in Taekwondo: Técnica De Giro Hacia atrás En Taekwondo”. Revista Ecos de la Academia 11, no. 21 (June 12, 2025): e1228. Accessed April 2, 2026. //ojs.devsoftec.com/index.php/ecosacademia/article/view/1228.