1. Illinois State University Thermal Regulation and Exercise Chapter 14

2. Illinois State University Normal Temperature l 36.1 to 37.8 C (97.0 to 100.0 F).

3. Illinois State University Evaporation l Sweat must evaporate to provide cooling. l Sweat that drips off the skin provides little or no cooling.

4. Illinois State University Humidity l Humidity - water saturation level of the air.

5. Illinois State University Temperature l Temperature –Aural –Sublingual –Esophageal –Rectal

6. Illinois State University

7. Hypothalamus l Houses your thermoregulatory center. l Acts like a thermometer, monitoring your temperature and causing heat loss or production as needed.

8. Illinois State University Temperature Sensors l Peripheral receptors - skin. l Central receptors - core temperature.

9. Illinois State University Exercise in the heat: l Heat fatigue and heat cramps l Heat exhaustion l Heat stroke

10. Illinois State University Heat Stress Index

11. Illinois State University Exercise in the heat l Repeated exposure to heat stress causes a gradual improvement in your ability to lose excess heat. l Acclimatization.

12. Illinois State University Exercise in the cold l Shivering l Hormonal warming (sympathetic nervous system) l Peripheral vasoconstriction

13. Illinois State University Exercise in the cold l Surface area and subcutaneous fat. l Wind chill. l Immersion in water.

14. Illinois State University Wind Chill Index

15. Illinois State University Exercise in the cold l Hypothermia (34.5 or 94.1). l Frostbite. l Layering.