Comparison of competitive anxiety and self-confidence in Brazilian Jiu-Jitsu skills levels : A cross-sectional in-event study

Ido Movement for Culture : journal of martial arts anthropology : theory of culture, psychophysical culture, cultural tourism, anthropology of martial arts, combat sports, Tom 20, Numer 1 (2020) s. 30-39
Heloiana K. C. Faro, Marilia P. M. Tavares, Petrus M. D. Gantois, Daniel C. Pereira, Mayra N. M. de Lima, Dalton de Lima-Junior, Daniel G. da S. Machado, Leonardo S. Fortes