Changes in body core and body surface temperatures during prolonged swimming in water of 10 °C–a case report In the spring of 2012, the German extreme swimmer Bruno Dobelmann sponge in preparation for the land crossing for 6 hours at a temperature of just under 10 degrees.Basically, one would expect to come to a pronounced hypothermia in such a cold water as a long time. Surprisingly, however, the body core temperature remained constant and what was much more amazing, she even rose at the beginning of swimming.After exiting the water, the body core temperature dropped a bit, which is generally known as ‘afterdrop’. By the way, the swimmers would have had to be dead of cold water after 2 hours and 55 minutes by a formula at just under 10 ° C.
We assume that the high body mass index, high body fat and the specific preparation in very cold water have allowed the float to endure so long. The Fall Report is published in https://extremephysiolmed.biomedCentral.com/Articles/10.1186/2046-7648-1-8