This preview has intentionally blurred sections. Sign up to view the full version.View Full Document
Unformatted text preview: Human Performance 33 15:36 Critical factors: radiation and perspiration methods of loss heat. Radiative heat loss depends on ambient temperature, SFA to mass ratio, color of skin clothing color and ability to sweat. When someone doesn’t sweat in heat the person will not prevail. People who are at risk is children (sweat is limited) and elderly (they don’t sweat very much) and also those with low cardio vascular health in high temperatures especially in high temperatures. Hypothalamus gland is believe to responsible for thirst and hunger and thermostat of the body. 37C=98.6F body temperature. The body response AC METHODS: Peripheral Vasodilation (blushing,radiative heat loss) then Sweating (Vaporize cooling). Assuming temp. goes below 78 degrees the response is: Peripheral vasoconstriction (reduce methods of heat loss). Alcohol: increases peripheral blood flow. The body tries not to do that. It is also a depressant. If you fall asleep blood flow....
View Full Document
- Spring '07
- 1.5hr, 78 degrees, 24hr, 20min, 6hr, 3cal