1. What is a possible explanation for the change in FEF associated with age? 2.

Question

1. What is a possible explanation for the change in FEF associated with age?

2. Will the PIFR and PEFR data be the same? Why or why not?

3. Explain what you would expect to see happen to the FEF in someone who has asthma.

4. Can you come up with a scenario where the PIFR and PEFR are comparable and explain why they would be comparable in this situation?

5. Suppose you have two people, one who is active and one who is not. They have the same resting respiratory rate. What would you expect the respiratory rate to be after two minutes of exercise?

6. Will there be a difference in flow rates between someone who runs marathons and someone who is a sprinter?

Explanation / Answer

1) FEF stands for forced expiratory flow. It is the amount of air that comes out of the lungs during middle part of the forced expiration. It represents the middle 25%-75% of the forced forced vital capacity. It decreases with advancing age due to increased collapsibility of the peripheral airways.

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