Comments on: Mammal Radiators https://www.isegoria.net/2012/09/mammal-radiators/ From the ancient Greek for equality in freedom of speech; an eclectic mix of thoughts, large and small Wed, 23 Sep 2026 17:58:19 +0000 hourly 1 http://wordpress.org/?v=3.6.1 By: T. Beholder https://www.isegoria.net/2012/09/mammal-radiators/comment-page-1/#comment-3728162 T. Beholder Sat, 21 Dec 2024 07:27:51 +0000 http://www.isegoria.net/?p=30062#comment-3728162 Yeah, heat exchange is wildly uneven. That’s why cold survival advice mostly revolves around reducing heat loss without reducing mobility too much. And one of the important points is that being submerged in cold water is bad enough already, but soaking wet head doubles heat loss in this situation.

When I studied exercise physiology years ago, fatigue was described through the three energy systems: ATP depletion, or lactic acid accumulation, or glycogen depletion, etc.

A quick search shows that pyruvate kinase participates in glycolysis, at the stage of ADP to ATP conversion, and has variation both for aerobic and anaerobic forms.

So it looks like the immediate cause is ATP depletion, which is going to happen sooner if replenishment starts to hiccup.

]]> By: Bruce https://www.isegoria.net/2012/09/mammal-radiators/comment-page-1/#comment-3728144 Bruce Sat, 21 Dec 2024 05:31:16 +0000 http://www.isegoria.net/?p=30062#comment-3728144 Mad scientists lose! Wah!

]]> By: Gunther https://www.isegoria.net/2012/09/mammal-radiators/comment-page-1/#comment-588891 Gunther Fri, 14 Sep 2012 13:49:58 +0000 http://www.isegoria.net/?p=30062#comment-588891 Interesting article at Slate.com covering the history of the cooling glove and questioning it’s effectiveness.

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