Fig. 1From: Effect of altering breathing frequency on maximum voluntary ventilation in healthy adultsRelationship between the average maximum voluntary ventilation (MVV) across subjects and average breathing frequency (fR). MVV values are presented as a percentage (%) of the maximum. A polynomial regression analysis of the preselected fRs yielded a third-order relationship (R2 = 0.982, P < 0.001)Back to article page