Table 3.

CPET before and after bariatric surgery versus healthy matched controls

	Pre-surgery	Post-surgery	Controls
Workloadmax, Watt	124±32	135±44$	167±34°°
VO2peak, L min−1	1.9±0.5	1.8±0.5	2.1±0.5***
RERmax	1.07±0.10	1.25±0.13$$	1.21±0.15°
HRmax, bpm	143±18	147±22	161±16°°
VEmax, L min−1	70±20	78±28	82±20
VEmax/MVV, %	71±16	72±20	65±22
VE/VO2peak	37±7	44±8$$$	40±7
O2 pulse max, mLO2 beat−1	13.7±2.7	12.1±3.4	14.2±4.1
O2 pulse max/LMlegs, mLO2 beat−1 kg	0.64±0.1	0.66±0.1	0.83±0.2°°
Maximal SpO2, %	96±2.8	96±1.2	94±5
VO2 @VT, L min−1	1.4±0.3	1.1±0.4$	1.4±0.4***
VO2/LMlegs @VT, mL kg−1 min−1	64±14	59±13	80±18°, **
VE/VCO2 slope	33±6	33±6	32±4
VO2/W slope, L min−1 W−1	10.8±1.9	9.9±2.5	10.0±2.0
HR/VO2 slope, beat L−1	40±14	52±15$	48±14
HR/VO2 slope, beat L−1 kg−1	5.0±1.2	4.7±1.5	3.2±1.0°°°, *

MVV, maximum ventilatory ventilation; SpO₂, pulse oxygen saturation; VCO₂, carbon dioxide output; W, workload.

^°p < 0.05

^°°p < 0.01

^°°°p < 0.001: pre-surgery versus controls.

^*p < 0.05

^**p < 0.01

^***p < 0.001: post-surgery versus controls.

^$p<0.05

^$$p<0.01

^$$$p < 0.001: pre-surgery versus post-surgery.