! I was under the impression that that vacuum was what made this effective, but difficult to do without professional equipment. If it’s not necessary, that significantly opens this up.
80% effectiveness is not quite right- you would need to subtract off the control cooling first, and I think it’s better to report it as “8 out of 12 did not see a benefit from vacuum cooling over non-vacuum cooling, and 4 out of 12 did not see a benefit from non-vacuum cooling over no cooling,” than the roughly equivalent “2/3rds effectiveness.” That’s really interesting; I wonder if they can directly measure blood flow and see what the underlying difference is. It might be that group A doesn’t alter blood flow in the presence of heat loss (which seems crazy), or that they only do it when it would push their temperature away from optimal.
I’m also curious what the cooling looks like in more benign circumstances. (The second paper had them sitting in a hot room with a ton of insulation, and still they managed to cool down without a heat sink!)
Ancestry plausibly affects how the cooling system is regulated and was uncontrolled for.
WRT the vacuum: Two sets of instructions for DIY implementations with costs around $150 exist on the internet. It would be nice if one could figure out whether one is a non responder without the time and cost of building one though.
! I was under the impression that that vacuum was what made this effective, but difficult to do without professional equipment. If it’s not necessary, that significantly opens this up.
80% effectiveness is not quite right- you would need to subtract off the control cooling first, and I think it’s better to report it as “8 out of 12 did not see a benefit from vacuum cooling over non-vacuum cooling, and 4 out of 12 did not see a benefit from non-vacuum cooling over no cooling,” than the roughly equivalent “2/3rds effectiveness.” That’s really interesting; I wonder if they can directly measure blood flow and see what the underlying difference is. It might be that group A doesn’t alter blood flow in the presence of heat loss (which seems crazy), or that they only do it when it would push their temperature away from optimal.
I’m also curious what the cooling looks like in more benign circumstances. (The second paper had them sitting in a hot room with a ton of insulation, and still they managed to cool down without a heat sink!)
Ancestry plausibly affects how the cooling system is regulated and was uncontrolled for.
WRT the vacuum: Two sets of instructions for DIY implementations with costs around $150 exist on the internet. It would be nice if one could figure out whether one is a non responder without the time and cost of building one though.