Sports engagement and mental toughness in high-performance: A study with tennis players from Ecuador and Portugal. E-balonmano com Journal Sports Science, [S. l.], v. 20, n. 1, p. 63–72, 2024. DOI: 10.17398/1885-7019.20.63. Disponível em: https://revista-ebalonmano.unex.es/index.php/ebalonmano/article/view/2314.. Acesso em: 21 may. 2024.