HEART RATE VARIABILITY IN ASSESSING THE FUNCTIONAL STATE OF THE BODY IN YOUNGER SCHOOL-AGED CHILDREN. SOUTH ARAL SEA MEDICAL JOURNAL, [S. l.], v. 1, n. 3, p. 81–85, 2025. Disponível em: https://jurnal.urgfiltma.uz/index.php/SASRSMJ/article/view/43. Acesso em: 15 nov. 2025.