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Old 07-20-2010, 07:38 PM   #2
Steven Low
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Join Date: Mar 2007
Posts: 3,091
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Popliteus muscle is used to lock the knee into extension... so if your tensing your leg straight all of the time it;'s easy for it to cramp up and get tight.

Read this for information on how you can release the stuff in that area (has a lot of other stuff as well):

http://www.eatmoveimprove.com/2009/1...ysfunctions/4/
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