Prediction of knee injury in professional soccer players using core endurance and strength

Although knee injury is common among soccer players, limited research on risk of injury exists. This study examined core endurance and strength in thirty-nine professional male soccer players and recorded knee injuries experienced throughout the following season. Prone-bridge, side-bridge, trunk flexion and horizontal back extension hold times were used as core endurance measures while peak isokinetic trunk flexor and extensor torques as well as hip abductor and external rotator torques were used as strength measures. Following the season, players were divided into injured and non-injured groups. Preseason endurance and strength were compared between both groups and used for risk of injury prediction. Non-injured players had significantly higher prone-bridge hold time compared to players that experienced injury. Both prone-bridge hold time and peak isokinetic hip abductor torque were significant predictors of injury (OR 1.033 & 13.62, respectively). Improving prone-bridge hold time and hip abductor strength can reduce the risk for injury.