IMPROVEMENT OF THE LONG-TERM TRAINING SYSTEM OF VOLLEYBALL PLAYERS BASED ON THE PRINCIPLES OF INDIVIDUALIZATION AND VARIABILITY OF TRAINING LOADS. World Bulletin of Physical Education and Sports Science, [S. l.], v. 1, n. 03, p. 70–81, 2025. Disponível em: https://worldbulletin.org/index.php/2/article/view/172. Acesso em: 1 may. 2026.