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Response to Exercise - Answers

 

  • Explain the lactate threshold

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


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

    • 3-5 minutes


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

    • 60%

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

    • Carbohydrates


  • What happens when carbohydrate stores and depleted?

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



 


 

   
 


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