Anxiety in Jiu-Jitsu athletes: differences according to age and competitive level. Research, Society and Development, [S. l.], v. 9, n. 8, p. e743986488, 2020. DOI: 10.33448/rsd-v9i8.6488. Disponível em: https://www.rsdjournal.org/rsd/article/view/6488. Acesso em: 14 dec. 2025.