RT info:eu-repo/semantics/article T1 Is a maximal strength-training program effective on physical fitness, injury incidence, and injury burden in semi-professional soccer players? A randomized controlled trial A1 Durán Custodio, Roberto A1 Castillo Alvira, Daniel A1 Raya González, Javier A1 Yanci Irigoyen, Javier K1 Football K1 Fútbol K1 Sports injuries - Prevention K1 Lesiones deportivas - Prevención K1 Deportes - Accidentes y lesiones K1 Performance K1 Physical fitness K1 Aptitud física K1 Strength training K1 Entrenamiento (Deportes) K1 Health K1 Salud K1 Sports medicine K1 Medicina deportiva K1 Public health K1 32 Ciencias Médicas K1 3212 Salud Publica K1 3204.03 Salud Profesional AB The aims of the study were to analyze the effects of a 12-week maximal strength- training program on injury incidence, injury burden, and physical fitness in semi-professional soccer players and to compare the perceived exertion load and well-being state between injured and non-injured soccer players. Twenty semi-professional male soccer players participated in this study. Participants were randomly allocated to an experimental group (EG, n = 10 players), who performed a maximal strength-training program, or to a control group (CG, n = 10 players), who only performed their regular soccer training. Physical fitness was measured at baseline and after the training program. In addition, the injury incidence, burden, training/match load, and the state of well-being of the players were recorded. The EG showed significant improvements in vertical jumps, change in direction ability, linear sprints, repeated sprint ability, isometric strength (p < 0.003; effect size = 1.78–11.86), and quadriceps–hamstring imbalance in both legs (p < 0.001; effect size = 2.37–3.71) in comparison to the CG. In addition, the EG players showed a significantly (p < 0.05) lower injury burden (p < 0.001, relative risk = 5.05, 95% confidence interval = 3.27–7.79). This study demonstrated the beneficial effects of a 12-week maximal strength-training program on physical fitness attributes and injury burden in semi-professional soccer players. PB MDPI SN 2227-9032 YR 2023 FD 2023 LK https://uvadoc.uva.es/handle/10324/67183 UL https://uvadoc.uva.es/handle/10324/67183 LA eng NO Healthcare, 2023, Vol. 11, Nº. 24, 3195 NO Producción Científica DS UVaDOC RD 21-may-2024