KINE 2490 Lecture Notes - Lecture 13: Frostbite, Wind Chill, Hypothermia
10 Apr 2017
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Document Summary
Different times of the year it is riskier (fall soccer, rugby, marathoners, winter time event and conditions can create hypothermic cases) Outside is colder that core the heat will be lost. Wind chill accelerates hear loss because of the convection process. When you are loosing heat, general metabolic activity increases fat is used less as a body source, when exposed to cold for long period of times thyroxin levels may increase (hormone to increase metabolic rate) Intrinsic lack of preparation (exposed to environments not prepared for) Lack of proper clothing (adding layers of clothing creating more vasoconstriction, best strategy: a pair of wool socks) Body type ectomorph: low body fat. Alcohol and tobacco: cns stimulant, vaso-constriction, hypertension. Core temperature may be maintained while shell temperature drops drastically. Deep frost bite tissue damage not reversed, superficial can be reversible. Systemic body cooling wind increases the loss of body temperature.
