PEDS200 Lecture : Environment and Exercise

• School: University of Alberta
• Department: Physical Education and Sport
• Course: PEDS200
• Professor: Dan Syrotuik

Document Summary

In response to heat: y general peripheral vasodilation y. Increase sweating mechanism to promote evaporation y conscious acts (lighter clothing, seeking shade) y acclimatization. In response to cold: y general peripheral vasoconstriction y shivering and non shivering induced increase in metabolic heat production y good bumps y conscious acts (warmer clothing) y acclimatization. Skin temp: skin thermistors y accuracy of skin temperature varies depending on location, exposure and movement y how do we gain heat during exercise: metabolic heat and heat gain from environment. How do we lost heat during exercise? y primarily as a result of exercising in a cold environment y cold ambient temp, wind chill, inadequate clothing can decrease core temp y ex. Cold water swims (triathlon), winter sports, living in e-town. The 4 heat exchange mechanisms where the body gains or loses heat: radiation y the transfer of heat between 2 objects via energy waves (usually electromagnetic) y all objects emit electromagnetic waves y ex.