Table 2.

Cardiorespiratory parameters at rest and during exercise

	Means ± SD
Rest
V̇E, L/min	12.44 ± 2.64
VT, L	0.75 ± 0.15
Fb, breaths/min	17.11 ± 4.06
V̇o2, L/min	0.33 ± 0.07
V̇co2, L/min	0.26 ± 0.06
$\text{P}{\text{E}}_{\text{C}{\text{O}}_2}$, Torr	18.1 ± 2.9
RER	0.79 ± 0.05
PCWP, mmHg	5.9 ± 2.4
Constant-load exercise at 20 W
V̇E, L/min	31.31 ± 3.98
VT, L	1.13 ± 0.25
Fb, breaths/min	28.98 ± 6.37
V̇o2, L/min	0.88 ± 0.17
V̇co2, L/min	0.77 ± 0.16
$\text{P}{\text{E}}_{\text{C}{\text{O}}_2}$, Torr	21.2 ± 2.8
RER	0.87 ± 0.05
PCWP, mmHg	20.5 ± 6.6
Peak exercise
WR, W	79 ± 29
V̇E, L/min	61.34 ± 18.78
VT, L	1.50 ± 0.59
Fb, breaths/min	43.56 ± 11.24
V̇o2, L/min	1.30 ± 0.41
V̇o2, %predicted	71 ± 17
V̇o2, mL/min/kg	11.85 ± 3.59
V̇co2, L/min	1.44 ± 0.57
$\text{P}{\text{E}}_{\text{C}{\text{O}}_2}$, Torr	20.2 ± 3.4
RER	1.10 ± 0.11
PCWP, mmHg	32.6 ± 6.7

F_b, breathing frequency; PCWP, pulmonary capillary wedge pressure; $\text{P}{\text{E}}_{\text{C}{\text{O}}_2}$, partial pressure of mixed expired CO₂; RER, respiratory exchange ratio; V̇E, minute ventilation; V̇co₂, carbon dioxide elimination; V̇o₂, oxygen consumption; V_T, tidal volume; WR, work rate.