Originally Posted by
FLvector
After a long, hard ride I sometimes experience cramps in the hamstrings a few hours later. It usually occurs after resting, then bending the leg to engage the muscle. If I catch it immediately I can straighten the leg and stretch the muscle, making it quickly dissipate. Fortunately, it doesn't happen very often.
So long ago that I'd forgotten, I used to get these, fixed that by taking a 500/250 cal/mag pill with my recovery drink immediately after riding. Never happened again. My doc said it was the magnesium rather than the calcium, but they go well together.
Here's the reading you want:
Neuromuscular fatigue leads to exercise-associated muscle cramping not dehydration and a salt deficit | Biestmilch's Seven
http://www.ku.ac.ke/images/stories/d...ce-Runners.pdf