Skip to main content
. Author manuscript; available in PMC: 2014 Jan 1.
Published in final edited form as: Exerc Sport Sci Rev. 2013 Jan;41(1):11–18. doi: 10.1097/JES.0b013e318267c0d2

Figure 5.

Figure 5

Maximal and tidal expiratory flow-volume curves. Calculated maximal minute ventilation (V̇EL/min) with utilization of greater portions of the maximal expiratory flow curve. If all expiratory reserve was utilized a maximum V̇E of 129 L/min could be obtained. However, except for extreme circumstances or voluntary breathing maneuvers such as the maximal voluntary ventilation (MVV), this is never observed. The curves yielding 114 or 106 L/min are more realistic. Thus, at 90 L/min, ventilatory output is very close to ventilatory capacity. Ex = exercise, R = rest. [Adapted from (11). Copyright © 1993. The American Physiological Society. Used with permission.]