The definition of cardiorespiratory fitness is _____.
a. the maximal force that a muscle or muscle group can generate in a single effort
b. the coordinated capacity of the heart, blood vessels, respiratory system, and tissue metabolic systems to take in, deliver, and use oxygen
c. the ability to sustain a held maximal force or to continue repeated submaximal contractions
d. the functional ROM about a joint
Answer: b. the coordinated capacity of the heart, blood vessels, respiratory system, and tissue metabolic systems to take in, deliver, and use oxygen