Chul Yoon, and Jae-Woong Yang. “Heart Rate Recovery (HRR%) Variation by Position and Measurement Time After Imitation Sparring in Male Jiu-Jitsu Trainees With White Belt”. Revista de Psicología del Deporte (Journal of Sport Psychology) 32, no. 4 (October 15, 2023): 287–297. Accessed November 27, 2024. https://rpd-online.com/index.php/rpd/article/view/1423.