RT journal article T1 Acute Hamstring Injury Prevention Programs in Eleven-a-Side Football Players Based on Physical Exercises: Systematic Review A1 Rosado-Portillo, Adolfo A1 Chamorro-Moriana, Gema A1 González Medina, Gloria A1 Pérez Cabezas, Verónica A2 Enfermería y Fisioterapia K1 physical exercises K1 physical therapy K1 health K1 eccentric contraction K1 strength training K1 muscular diseases K1 prevention K1 hamstring muscles K1 football K1 soccer AB Objective: To analyze the exercise programs used to prevent of acute hamstring injuries in eleven-a-side football players, and their effectiveness. (2) Methods: A systematic review (PRISMA) was conducted (2008-2020), including RCTs, that exclusively used physical exercises as a prevention method. (3) Results: Ten studies were selected considering 14 interventions, including nine different programs: FIFA11+ (11+), Harmoknee, eccentric Nordic Hamstring Exercise (NHE) exclusively, with eccentric exercises, with stretching or with proprioceptive, New Warm-up Program (NWP), Bounding Exercise Program (BEP), the only one with no positive results, and proprioceptive exercises. Incidence of injuries and strength were the most considered variables, both with favorable evidences. Programs including NHE, which assessed injury incidence, were always effective. The 11+ program was effective in injury incidence and strength; NWP was effective in balance, stability, and strength. (4) Conclusions: The exercise programs discussed were effective to prevent acute hamstring injuries in football players except BEP and partially Harmoknee. Exercises mostly used to reduce the risk of hamstring injuries are those of eccentric force due to its functionality, especially NHE. Only concentric contractions and isometric contractions obtained significant favorable results. The most complete and promising programs were 11+ (in injury incidence and strength) and NWP (strength, balance, and stability). NWP was the best in strength. PB MDPI SN 2077-0383 YR 2021 FD 2021-05 LK http://hdl.handle.net/10498/25150 UL http://hdl.handle.net/10498/25150 LA eng DS Repositorio Institucional de la Universidad de Cádiz RD 07-nov-2026