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ACSM Personal Trainer

Category - Exercise Programming and Implementation

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What does the Frank-Starling Law state about cardiac physiology?
  1. That the left and right atria contract in unison, as do the left and right ventricles
  2. That end-diastolic volume significantly affects stroke volume by causing greater stretch and greater contractile force on the myocardium
  3. That cardiac output is a result of stroke volume and heart rate
  4. That maximal effort can increase cardiac output by five to six-fold than at rest
Explanation
Answer: B - The Frank-Starling Law states that end-diastolic volume significantly affects stroke volume by causing greater stretch and greater contractile force on the myocardium. Endurance training can amplify the heart's pumping ability by simply the repeated increase in the amount of blood being pumped out and returned to the heart, as this affects the end-diastolic volume.
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