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Related Flashcards
Cards In This Set
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What 5 factors determine the ratio of CHO to FAT use during excercise?
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Intensity, duration, gender, environmental conditions, diet/supplements
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What is the most important factor that determines the ration of CHO to FAT use during excercise?
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Intensity of excercise
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What happens to CHO use and fat use as exercise intensity goes up?
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The % energy from oxidation of CHO gets up sharply while the % energy from fat goes down.
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What happens to CHO use and fat use as exercise duration goes up?
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The % of energy coming from fat goes up while the % of energy from CHO goes down.
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What is the effect of the change in the contribution from fat on the ability to maintain the desired exercise intensity?
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There's a trade of between exercise intesity and duration.
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Why does the contribution from fat change as exercise progresses?
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Glycogen lessens and the use of fat goes up.
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How does Gender affect CHO and Fat use?
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Women tend to use more fat and less CHO than equally trained men.
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What factor is most critical in causing the difference between men and women?
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Estrogen alone shifts fuel toward more fat and less CHO
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How does lower- CHO diet affect carbohydrates use during excercise?
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Shifts fuel use to more fat & less CHO-- after 60% of maximal capacity in exercise the dietary effects go away.
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How does caffeine use affect carbohydrate use during exercise?
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Increases the breakdown of triglycerides to free fatty acids. --> better on those who don't use caffeine.
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