Training Frequency, Weight, and Mental Well-being During COVID-19 Lockdown in Professional Mixed Martial Arts Fighters. Research in Health and Medicine, [S. l.], v. 1, n. 1, 2021. Disponível em: https://mail.researchdirects.com/index.php/healthsciences/article/view/4. Acesso em: 21 apr. 2026.