Lecture 31 - Kin 110Lecture 31 Monday April 26th 2010 In addition to exercise/diet many products available to control body weight and fat o Low

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Kin 110—Lecture # 31 Monday April 26 th , 2010 In addition to exercise/diet, many products available to control body weight and fat o Low energy alternatives o Block nutrient absorption Most dietary supplements sold to “burn fat” Idea is to raise the metabolic rate = thermogenesis Caffeine is a stimulant: raises metabolic rate o Heart rate, blood pressure and energy expenditure all go up with caffeine use. o Especially in people who are NOT habitual users No product shows promise and perils of thermogenic supplements more than ephedra The “fight or flight” response is due to the hormone epinephrine (adrenaline) Sudden stress (fear, surprise) causes released of epinephrine Binding to receptors causes increase in Heart rate, increased in BP, and breakdown of glycogen and fat Enzymes quickly go back to less active state so effects do not last too long Effects of epinephrine lasts only 10-15 minutes o Ephedrine (synthetic or extracted from ephedra plant) mimics epinephrine but it
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This note was uploaded on 10/19/2011 for the course KIN 110 taught by Professor Lass during the Spring '08 term at UMass (Amherst).

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Lecture 31 - Kin 110Lecture 31 Monday April 26th 2010 In addition to exercise/diet many products available to control body weight and fat o Low

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