Sitting for extended periods of time on a consistent basis, like at work or home (or both) could be the root cause of many running injuries that manifest themselves through running and any other fitness activities. According to Matt Fitzgerald in his book “Brain Training for Runners”, sitting causes major muscle imbalances whereby some muscles become extremely tight and others extremely weak. According to Fitzgerald and sportsinjurybulletin.com, these imbalances can cause pain in the lower back, reduce fitness performance, and promote injuries like runner’s knee and IT band syndrome among many others.
Our muscles work constantly to maintain balance with one another. To explain it simply, let’s use the bicep/triceps pair as an example. If you bend your arm to a 90 degree position you will notice that your bicep tightens while your triceps relax to allow that movement. Now relax and straighten your arm. Your bicep relaxes while your triceps tighten and contract to straighten your arm out. Now, take that example and apply it to every movement you make in your body. That same thing occurs while running and explains our natural disposition for movement.
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