Predominance and effect of graduation belt on rapid weight loss in Brazilian Jiu-jitsu athletes - De Albuquerque Mauricio, C.; Fraga Vilardo, I. D.; Goncalves, A. F.; Pereira Azevedo Teixeira, R.; Valenzuela Perez, D. I.; Brito, C. J.; Merino-Munoz, P.; Miarka, B. (Journal of Physical Education and Sport, 2023)