Kathrin Steffen

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OBJECTIVE To examine the effect of a comprehensive warm-up programme designed to reduce the risk of injuries in female youth football. DESIGN Cluster randomised controlled trial with clubs as the unit of randomisation. SETTING 125 football clubs from the south, east, and middle of Norway (65 clusters in the intervention group; 60 in the control group)(More)
A set of exercises--the "11"--have been selected to prevent football injuries. The purpose of this cluster-randomized controlled trial was to investigate the effect of the "11" on injury risk in female youth football. Teams were randomized to an intervention (n=59 teams, 1091 players) or a control group (n=54 teams, 1001 players). The intervention group was(More)
Protecting the health of the athlete is a goal of the International Olympic Committee (IOC). The IOC convened an expert panel to update the 2005 IOC Consensus Statement on the Female Athlete Triad. This Consensus Statement replaces the previous and provides guidelines to guide risk assessment, treatment and return-to-play decisions. The IOC expert working(More)
BACKGROUND A protective effect on injury risk in youth sports through neuromuscular warm-up training routines has consistently been demonstrated. However, there is a paucity of information regarding the quantity and quality of coach-led injury prevention programmes and its impact on the physical performance of players. OBJECTIVE The aim of this(More)
BACKGROUND Injury prevention programme delivery on adherence and injury risk, specifically involving regular supervisions with coaches and players on programme execution on field, has not been examined. AIM The objective of this cluster-randomised study was to evaluate different delivery methods of an effective injury prevention programme (FIFA 11+) on(More)
BACKGROUND Artificial turf is becoming increasingly popular, although the risk of injury on newer generations of turf is unknown. AIM To investigate the risk of injury on artificial turf compared with natural grass among young female football players. STUDY DESIGN Prospective cohort study. METHODS 2020 players from 109 teams (mean (SD) 15.4 (0.8)(More)
BACKGROUND The incidence of lower extremity injuries in female soccer players is high, but the risk factors for injuries are unknown. PURPOSE To investigate risk factors for lower extremity injuries in elite female soccer players. STUDY DESIGN Cohort study; Level of evidence, 3. METHODS Players in the Norwegian elite female soccer league (N = 12(More)
BACKGROUND Participants' compliance, attitudes and beliefs have the potential to influence the efficacy of an intervention greatly. OBJECTIVE To characterise team and player compliance with a comprehensive injury prevention warm-up programme for football (The 11+), and to assess attitudes towards injury prevention among coaches and their association with(More)
The injury rate in football is high, and effective injury prevention methods are needed. An exercise program, the "11," has been designed to prevent the most common injury types in football. However, the effect of such a program on performance is not known. The aim of this randomized-controlled trial was to investigate the effect of the "11" on performance(More)