Originally Posted by Graal
The body defends itself against increases (or decreases) in temperature by accelerating blood circulation. I’ve always been convinced that it’s impossible to reach the temperature at which collagen becomes highly deformable (42 ° C-108°C- according to my sources). To check, I decided to measure the temperature inside the urethra (thanks howardson) before and during a warm up with IR. This is te warm up method I use since a few weeks.
Before the session: 34.1 ° C (93°F) ; 37°C (98.6°F°) is the internal body temperature
Maximum reached (after about 20 minutes of exposure): 38.0°C (100°F).
I thought about doing the same measurement after heating under a stream of hot water (this is the method I used before). Big surprise :
Maximum reached (much faster than the IR) : 40.0°C (104°F).
From now on I will use the IR to slow the decrease of temperature during exercises but nevermore as a method of heating.
What would happen if blood circulation is temporarly halted? Clamping could work here as an example.
-Clamp off hard.(if you are conditioned)
-increase temperature to (42 °C-108°F) for typical clamp time.(no more then 10 minutes)
-release clamp and repeat.
I have no means to check for temperature inside the urethrea.
Circulation is also kind of halted/slowed down with pumping I think.