exercise induced cramps

Exercise-associated muscle cramps

Exercise-associated muscle cramps

As a masters squad swimmer I have found myself and many of my fellow squad swimmers suffer from painful leg and foot cramps towards the end of a training session. Exercise-associated muscle cramps (EAMC) are painful and disruptive for those who experience them, and can become debilitating if they occur regularly.  

Cramping during exercise is very common, cramping is more likely to occur when muscles are in a shortened and contracted state. But why do they occur and what triggers them?