I am a certified Crossfit coach. Dark urine or no urine output in conjunction with extreme muscle soreness and muscle tenderness which occurred after certain exercises involving high count repetitive movements can cause (exertional) rhabdo. I PERSONALLY know coaches who have had clients who had the same symptoms and were taken to the ER. It was determined they had rhabdo and their clients required 4 to 7 days of hospitalization. These clients got rhabdo from push ups.
You may not care for the health of that OP and may be dismissive of what I'm saying and that's fine. However I prefer to give my own personal experience and knowledge just in case that person is in danger.
Here's some good reading for you hckynt. These are only 3 cases of many.
CASE REPORTS FROM Stan Reents PharmD www.athleteinme.com
• Case #1: A 19-year old college freshman experienced 2 episodes of rhabdomyolysis while playing competitive ultimate frisbee. The first episode occurred following a 5-hr frisbee tournament (her actual playing time was estimated to be 3 hours).
At the end of the tournament, she developed severe, diffuse muscle soreness. She was unable to straighten her elbows and knees and had difficulty standing because of soreness in her back muscles. Her urine became brown-colored but she did not seek medical attention. The muscle soreness resolved after 3 days.
Her second episode of rhabdomyolysis occurred 2 weeks later. This time, she participated in a 2-hr frisbee scrimmage followed by a 2-hr karate class. Shortly thereafter, she experienced severe muscle cramping and sought medical attention.
The following day, her CK (creatine kinase, an enzyme found in muscle cells) levels peaked at 59,000 U/L. Over the following week, the CK level fell to 266.
She did not recall any illness or fever preceding these 2 episodes and was not taking any medication. Until this point in her life, this young woman had no history of rhabdomyolysis. In high school, she played tennis and ran track. She tolerated workouts of up to 2 hours without difficulty. She was a sprinter, but could run 2 miles with no problem. It was subsequently determined that she had a genetic predisposition for rhabdomyolysis (Krivickas LS. 2006).
• Case #2: A 40-year old black male developed rhabdomyolysis in his biceps after doing several sets of "negative curls". These are exercises where a spotter helps lift a heavy barbell up (concentric phase), and then the weight-lifter lowers the barbell (without assistance) until his arms are in an extended position (eccentric phase). Roughly 18 hours after doing negative curls, this athlete experienced severe biceps pain and could not fully extend his arms. His CK levels reached 76,000 U/L (normal range: 60-320 U/L) (Bolgiano EB. 1994).
• Case #3: A 21-year old inmate participated in a prison hazing ritual where he had to move 10 chess pieces on the floor. (I won't mention which part of his anatomy was used to pick up the chess pieces, but, suffice to say it wasn't his hands!) The chess pieces were lined up on the floor and the prisoner had to squat to first pick them up, then had to squat again to put them down. This required approximately 110 deep knee bends.
Within 12 hours, he was unable to leave his bed because of severe pain in his anterior thighs. Three days later, he was taken to the hospital with complaints of brown urine and nocturia.
On physical exam, his thighs were mildly swollen and his quadriceps were exquisitely tender. He was unable to flex his knees. He had protein in his urine, and his CK level was greater than 160,000 U/L. With treatment, the CK levels returned to normal after 12 days (Frucht M. 1994).
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