Medical Overview

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Medical Overview

Controlled by the muscles of the abdomen, back, pelvis and hip, the core is the body's center of gravity and provides a stable platform for key athletic maneuvers: running, jumping, stopping, accelerating and pivoting. Whenever an athlete jumps and lands, for example, his or her core strength exerts significant influence on knee-joint position. Research has shown that core weakness increases the risk of ACL tears and other lower-extremity injuries, especially for female athletes who generally have less core stability than male athletes.

Athletes with delayed trunk-muscle function or hip weakness have increased potential for core instability. If the core is unstable, the knee joint at landing is more likely to be in an "at-risk" position for ACL injury. The primary reason females tend to land differently than males, in a more upright, "knock-kneed" posture, may be core instability. Proper intervention and core stability training from a qualified instructor can optimize correct landing position, enhance neuromuscular control and reduce the risk of ACL tear. Optimal landing position– head over chest, chest over knees and knees over feet with a neutral spine–is proper athletic posture and serves as the starting point for a quick, athletic response in any direction.