The increase in hydric volume is associated to contractile impairment in the calf after the world’s most extreme mountain ultra‑marathon In ultra-curls, it is known that it comes to an inflammatory reaction, muscle damage, reduced performance and swelling of lower extremity. A recent study on an ultramarathon examined a possible relationship between swelling of lower extremity and power loss.
It showed an increase in extracellular water, an increase in the scope of the calf and a connection between the swelling of the calf with a reduced contractility of the calf muscles. The very insightful work can be found under https://extremephysiolmed.biomedcentral.com/articles/10.1186/s13728-015-0037-6