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GOHEAVY.COM Olympic Weightlifting Forum
Re: Hey Greg
Posted By: Greg Ernst (79.63.uthscsa.edu)
In Response To: Hey Greg (TIM SWORDS)
Date: Friday, December 8, 2006, @ 1:03 p.m.
Tim:
I'll try to explain briefly, but it is much easier looking at some pictures or a model. Basically, impingement sydrome of the shoulder involves inflammation of the rotator cuff tendons, biceps tendon, or bursa around the shoulder as a result of intermittent/repetitve compression of these structures. These structures are typically compressed between the greater tuberosity of the humerous (a bump on the "ball" part of the ball and socket joint) and the structures that lay over the top of the humerous (the acromion process and coracoacromial arch). If the space between these structures (the subacromial space), is large and the head of the humerous is well stabilized, there should not be impingement with most activities. A combined motion of shoulder internal rotation with shoulder flexion (elevation) results in this subacromial space being smaller. This is the precise position the upright row puts one in. If one does not have good stabilization of the head of the humerous (possibly due to weak rotator cuff muslces) or this space is compromised by an unusally shaped acromian ("tip" of the shoulder), or tight pect muscles that cause a forward shoulder posture, this space can be compromised putting one at risk for impingement syndrome.To prevent impingement sydrome one should have a strong rotator cuff, strong scapular muscles, flexible pects (no forward shoulder posture), and minimize the flexion/internal rotation position. Doing upright rows with a wider grip is probably better than a narrow grip. But any position where the the elbow is at or above the shoulder with the hand lower than the elbow, is an at risk position.
There are other factors, but this is probably enough for now. We can talk about it over a beer at the Juniors.
Greg
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