Marathon Physiology Quiz
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Questions and Answers

As the race begins, what energy system would Clara use primarily?

  • ATP-PC & anaerobic glycolytic systems (correct)
  • oxidative phosphorylation system
  • fatty acid system
  • all of the above are used immediately and to the same level
  • The initial 2-4 minute period of exercise has been referred to as the:

  • lactate threshold period
  • oxygen debt period
  • steady rate period
  • oxygen deficit period (correct)
  • While warming up, Clara’s minute ventilation increases from 10 L/min to 40 L/min, based on the normal gas exchange response to exercise you would predict that:

  • Alveolar O2 must decrease
  • Arterial-venous CO2 difference gets smaller
  • Arterial CO2 is normal
  • Alveolar CO2 must increase (correct)
  • Venous CO2 decreases
  • At mile 16, what would be used primarily for energy assuming that Clara is in steady state?

    <p>muscle glycogen and free fatty acids</p> Signup and view all the answers

    During the Boston marathon, at what point would Clara primarily rely on muscle glycogen and free fatty acids for energy assuming she is in steady state?

    <p>Mile 16</p> Signup and view all the answers

    What is the primary energy system that Clara would use at the beginning of the race?

    <p>ATP-PC &amp; anaerobic glycolytic systems</p> Signup and view all the answers

    During the initial 2-4 minute period of exercise, what is this period commonly referred to as?

    <p>Oxygen deficit period</p> Signup and view all the answers

    As Clara warms up, her minute ventilation increases. Based on the normal gas exchange response to exercise, what would you predict about the alveolar O2?

    <p>Alveolar O2 must decrease</p> Signup and view all the answers

    For an individual to run a 26.1 mile marathon, which energy systems must the body adapt to the stress?

    <p>All of the above</p> Signup and view all the answers

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