Tuesday, September 24, 2013

CrossFit’s Dirty Little Secret — Health & Fitness

 

A Tale of Rhabdomyolysis

One day, a very fit, young, physical therapist colleague of mine went to CrossFit. She had been many times before. On this warm Texas evening, she performed a partner workout, where each would trade off performing sets of 10 for each exercise. The workout consisted of pushups. Lots of them. Copious amounts of overhead press were also included.


So what is rhabdomyolysis exactly? Under extreme conditions your muscles cells explode. They die. They leach protein out into the blood stream, including one form called myoglobin. Ever stalwart, your kidneys take up the job of clearing these dangerous proteins from the blood. Why? It’s just what they do. Unfortunately, myoglobin proteins aren’t designed to be in the blood in the first place and they can easily overload the kidney. This can produce injury or death to all or part of the kidney in a short amount of time, and is potentially lethal. Locally, the muscles are left damaged and dying. Swelling ensues and weakness occurs as pressure builds around the remaining muscle cells. Your body’s systems that normally can assist with this local muscle damage are now offline trying to help you not die. If you get to this stage, you’re in serious trouble.


 

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