Lung capacity
Lung capacity was the maximum  of air an individual's lung(s) could hold at any given time. Having a greater lung capacity could be an advantage for some individuals, such as athletes and warriors. ()

In 2371, The Doctor assured Kes that her lightheadedness following her donation of a lung to Neelix would soon pass as she adapted to her newly diminished lung capacity. ()

In 2377, The Doctor determined that Fantome had an unusually large lung capacity. ()

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Medical measurements