Low-volume Nordic hamstring training improves change-of-direction performance more than higher volumes in youth soccer players. - Hammami, Raouf; Gene-Morales, Javier; Jiménez-Martínez, Pablo; Mahmoudi, Abdelkader; Rebai, Haithem; Alix-Fages, Carlos; García-Ramos, Amador; Janicijevic, Danica; Colado, Juan C. (Frontiers in Sports & Active Living, 2026)