Hamstring injury rehabilitation and prevention of reinjury using lengthened state eccentric training: a new concept.

Unlabelled: BACK GROUND AND PURPOSE: Hamstring injury is a common occurrence in sport and there has been limited success in reducing this rate of recurrence to date.

Description Of Topic With Related Evidence: High speed running requires eccentric strength when the hamstring muscles are in a lengthened state. The lengthened state occurs when the hip is in flexion and the lower leg moves into extension, thus lengthening the two joint hamstring muscle over both articulations upon which they act. There is evidence to suggest that athletes who have sustained a hamstring strain lack strength when the muscle is utilized during performance in a lengthened state.

Purpose: To examine the risk factors contributing to such a high recurrence rate and propose a unique rehabilitation strategy addressing these factors in order to decrease the rate of reinjury.

Discussion/relation To Clinical Practice: Failing to increase an athlete's eccentric strength in a lengthened position after a hamstring injury may predispose an athlete to subsequent reinjury. Incorporating lengthened state eccentric training may help reduce the rate of reinjury.

Level Of Evidence: Level 5.