Explain how to assess if your fitness routine is improving your cardiorespiratory health.

Explanation:

Cardiorespiratory endurance is measured by maximum oxygen uptake (VO2 max) and how it's used during intense exercise.

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If you're physically fit or an athlete, you can measure your cardiorespiratory fitness using:

1.the Astrand treadmill test.

2.the 2.4 km run test.

3.the multistage bleep test.

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