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Military Health System

Aerobic Fitness or Cardiorespiratory Endurance

Date of Publication:



The functional capacity of the heart, lungs, and blood vessels to deliver oxygen to the working muscles, and its use by the muscles to oxidize energy sources to generate energy over sustained periods of time. Essentially, it is the body’s capability to take and use oxygen and food to produce energy.

Source of Definition:

DoDI 1308.03: DoD Physical Fitness Body Composition Program

Last Updated: September 16, 2022
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