The effect of alternating transitional speed, agility and motor speed exercises in the training unit on some harmonious abilities of soccer players, Al-Baraem category (U12 years). Journal of Hama University , [S. l.], v. 6, n. الخامس عشر, 2024. Disponível em: https://journal.hama-univ.edu.sy/huj/article/view/1570. Acesso em: 6 jun. 2026.