THEORETICAL FOUNDATIONS OF TRIATHLON AND THE SYSTEM OF MESOCYCLES IN THE TRAINING PROCESS. World Bulletin of Physical Education and Sports Science, [S. l.], v. 1, n. 1, p. 74–78, 2025. Disponível em: https://worldbulletin.org/index.php/2/article/view/43. Acesso em: 12 nov. 2025.