Evaluation of adaptation based on biological variability and substantial changes (SCC) in young rhythmic gymnasts. - Rashid Xamidovich, Kadirov; Mehriddin Junaydulloyevich, Abdullayev; Nodir Nuriddinovich, Xusenov; Makhasti Zokir kizi, Djuraeva; Akbar Askarovich, Rustamov; Feruzjon Ilxomovich, Moʻminov (Frontiers in Sports & Active Living, 2026)