METHODOLOGY FOR DEVELOPING FLEXIBILITY IN MIDDLE SCHOOL GIRLS (GRADES 5–9) WITHIN THE FRAMEWORK OF DIFFERENTIATED PHYSICAL TRAINING. Scientific journal of the Fergana State University, [S. l.], v. 30, n. 6, p. 31, 2025. Disponível em: https://journal.fdu.uz/index.php/sjfsu/article/view/5981. Acesso em: 9 jan. 2026.