The stiffness of the field surface, its quality and the friction between surface and shoe are believed to be key factors involved in surface-related football injuries. There are an increasing number of artificial turfs under construction, although the injury risk on artificial turf is poorly documented. The aim of this prospective cohort study is to analyze risk of injury between grass and artificial turf among young female football players. Young female players (120 teams, 2 100 players, 14-16 years) will participate in the registration of the 2005 season. All injuries, training and match activities will be recorded throughout an eight month period, including data on injuries and exposure on the different turf types.
This study will contribute to the knowledge on injury risk on artificial turf versus natural grass. Secondary effect variables will be the total injury frequency of certain injury types of interest, as ankle and knee sprains, on both turfs during the same period.