Vital capacity - this is the maximum volume of air that can be breathed in or out in one breath, Tidal volume - this is the volume of air that is breathed in or out during normal breathing (at rest), Breathing rate - this is the number of breaths taken in one minute (one breath = taking air in and breathing it back out again), Oxygen uptake - this is the volume of oxygen used up by someone in a given time,

Measuring breathing

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