Fig. 3.

Individual differences between age- and sex-matched CON and CF pairs for CPET-derived variables. All plots are calculated as CON minus CF, i.e. bars underneath y = 0 on x-axis indicate participant with CF has a greater value than CON counterpart. a Differences in allometrically scaled $\dot{V}{\text{O}}_{2\text{peak}}$ between pairs. b Differences in OUEP between pairs, independent of differences in $\dot{V}{\text{O}}_{2\text{peak}}$. c Differences in $\dot{V}{\text{O}}_{2\text{peak}}$ (mL kg^−0.86.min⁻¹) between pairs, plotted alongside within-pair differences in OUEP (mL L⁻¹). Black bars represent $\dot{V}{\text{O}}_{2\text{peak}}$ and grey bars indicate OUEP