Distinguish between different kinds of cardiorespiratory fitness assessments and explain why different tests provide different information about fitness levels.

Answer:

Cardiorespiratory fitness can be assessed with tests such as a timed run or walk, a step test, or a shuttle run. These tests use different activities and protocols and may measure distance completed, the ability to sustain effort, or heart-rate response and recovery. Because each emphasizes different demands and measurements, they provide different estimates of a person's fitness level rather than identical information.