Why Does My Thoracic Outlet Syndrome Get Worse When I Run?
Why does thoracic outlet syndrome flare up when you run? Chiropractors in La Cañada Flintridge explain the real cause and how to get lasting relief.
If your thoracic outlet syndrome gets noticeably worse when you run, you're not imagining it — and it's not random. There's a mechanical reason, and once you understand it, the fix becomes obvious.
Thoracic outlet syndrome is compression of the nerves and blood vessels between the collarbone and first rib — producing arm pain, numbness, or heaviness.
Why Running Makes Thoracic Outlet Syndrome Flare Up
When you run, your body loads the joints and muscles involved in thoracic outlet syndrome in a very specific way. If those joints already aren't moving well — restricted at one level, hypermobile at another — the load has nowhere good to go. It gets absorbed by the tissues that are already irritated, and the pain spikes.
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