Table 3.

Mean $\dot{V}$, HR, MAP and $P_{\mathrm{ETC}{\mathrm{O}}_2}$ values recorded during the 2 min baseline period in the Control and PECO trials for the Healthy and COPD patients

	Trial	$\dot{V}$ (l min−1)	f (breaths min−1)	HR (beats min−1)	MAP (mmHg)	$P_{\mathrm{ETC}{\mathrm{O}}_2}$ (mmHg)
Healthy	Control	8.72 ± 0.92	12.3 ± 2.3	68 ± 1.3	93 ± 3.1	39 ± 1.6
	PECO	9.09 ± 1.02	13.4 ± 2.8	69 ± 1.4	95± 3.8	39 ± 0.9
COPD	Control	9.94 ± 0.6	14.5 ± 3.9	71 ± 1.6	89 ± 1.6	45 ± 2.2
	PECO	10.37 ± 0.54	15.2 ± 3.1	72 ± 1.6	90 ± 1.9	44 ± 2.3