CanFitPro Personal Training Specialist Practice Test

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What factors contribute to cardiorespiratory capacity (VO2max)?

  1. Only the heart's ability to pump blood

  2. Only the muscles' ability to use oxygen

  3. Both the heart's and muscles' abilities in oxygen utilization

  4. The lungs' ability to intake air

The correct answer is: Both the heart's and muscles' abilities in oxygen utilization

Cardiorespiratory capacity (VO2max) is determined by both the heart's ability to pump oxygen-rich blood and the muscles' ability to use that oxygen effectively. This means that options A and B are incorrect because they only focus on one aspect of cardiorespiratory capacity. Option D is also incorrect because while the lungs play a role in oxygen intake, they are not the only contributing factor to VO2max.

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