In the spirometry class, you measured Peak Inspiratory Flow (PIF).
Which one of the following is most correct?
In a healthy subject, PIF:

Question

In the spirometry class, you measured Peak Inspiratory Flow (PIF). 
Which one of the following is most correct?
In a healthy subject, PIF:

Answer

is the airflow generated during a maximal inspiration

Answer

is the airflow generated during tidal breathing

Answer

is always larger than Peak Expiratory Flow (PEF)

Answer

is the amount of air you can inspire on top of tidal breathing

Answer

is the amount of air you can inspire upon forced expiration

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