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Home > A Level Revision > Response to Exercise > Flash Cards


Electronic Quiz Flash Cards


1. Explain the lactate threshold











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1. Explain the lactate threshold



  • The point where lactate build-up interferes with muscle function






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2. How long can high intensity (sub-maximal) exercise be maintained under the anaerobic system









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2. How long can high intensity (sub-maximal) exercise be maintained under the anaerobic system



  • 3-5 minutes





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3. Fat metabolism can only be used as an energy source below what percentage of VO2 max?










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3. Fat metabolism can only be used as an energy source below what percentage of VO2 max?



  • 60%





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4. During prolonged high intensity exercise up to 80% VO2 max, what is the predominant fuel source?










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4. During prolonged high intensity exercise up to 80% VO2 max, what is the predominant fuel source?



  • Carbohydrates





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5. What happens when carbohydrate stores and depleted?










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5. What happens when carbohydrate stores and depleted?



  • The body must use fat stores and subsequently reduce exercise intensity





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