How Poor Posture May Increase Shoulder Injury Risk
October 13, 2010
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“An ounce of prevention is worth a pound of cure.” – Henry de Bracton

In an effort to help screen baseball players for shoulder injuries, a study in the American Journal of Sports Medicine:

Used a "double square" measurement shown here:

and found that the further away the throwing shoulder was from the wall, the tighter the back of the shoulder was and the greater the risk for injury.

Specifically:

Players with a throwing shoulder 170-189 millimeters forward from the wall
"had higher amounts of posterior shoulder tightness".

Because tightness in the back of the shoulder may increase injury risk:

Having proper posture can help prevent shoulder tightness and may decrease injury risk.

How Can I Maintain Proper Posture and Shoulder Position?