I've been trying to stay out of this but can't anymore...there have been some serious cases of rhabdomyolysis I've seen over the years and well before the advent of CrossFit - they were simply as a result of poor supervision +/- lack of maturity on part of supervisors and sometimes lack of fitness on part of victims during all sorts of fitness events...BFT's, runs in high heat and humidity without proper hydration, silly people starting back into weight training at the levels they were doing it previously after a long hiatus, etc, ad nauseum. Any kind of high intensity exercise, and by that, I mean for the person actually doing it, can cause sufficient muscle breakdown to clog up your kidneys, especially if they're not hydrating properly...I can think of one in recent memory from a BFT who was ill enough to miss some work after spending a day in the ER hooked up to an IV and another from a run that resulted in them being in ICU for a month due to renal failure.
In the end, it comes down to the Command Teams being attuned to who is properly trained to lead a PT session and ensuring that, especially if they're new to it, are themselves supervised. There are courses out there to properly prepare PTI's for units...people have got to start using those assets more.
:2c:
MM