Table 2

Pulmonary function, cardiorespiratory fitness variables and haemoglobin concentration before and 4–6 weeks after surgery

	Before surgery		After surgery		Change from baseline (95% CI)
	Lobectomy n=58	Pulmonectomy n=12	Lobectomy n=51	Pulmonectomy n=8	Lobectomy n=51	Pulmonectomy n=8
FEV₁, L	2.4±0.8	2.6±0.7	2.0±0.6	1.7±0.3	−0.4 (−0.5 to −0.3)	−0.9 (−1.3 to −0.5)
DL_CO, mmol/min/kPa	6.7±2.1	7.2±2.3	5.5±1.6	4.8±1.2	−1.3 (−1.6 to −1.0)	−2.7 (−4.1 to −1.3)
V̇O_2peak, mL/kg/min	23.4±5.5	26.2±6.9	19.5±5.4	17.8±6.6	−4.3 (−5.4 to −3.3)*	−9.2 (−14.3 to −4.2)*
V_Epeak, L/min	59.8±18.0	67.3±16.0	47.4±14.0	44.4±16.6	−11.3 (−14.8 to −7.8)*	−21.6 (−32.8 to −10.3)*
Breathing reserve, %	35.3±14.9	34.8±11.0	41.8±13.0	41.0±15.3	5.8 (3.0 to 8.6)*	2.5 (−12.0 to 16.9)
SpO_2peak, %	93.4±4.1	90.3±6.7	93.3±3.3	92.9±3.4	−0.6 (−0.2 to 1.5)	0.9 (−3.3 to 1.5)
Oxygen pulse, mL/beat	11.8±3.5	13.1±3.9	10.0±2.8	9.9±4.6	−1.7 (−2.4 to −1.0)*	−2.7 (−4.3 to −1.0)*
HR_peak,beat/min	146.9±21.1	152.4±21.3	137.4±18.0	127.5±18.6	−9.5 (−12.8 to −6.1)*	−24.9 (−40.2 to −9.5)*
Haemoglobin, g/dL	14.7±1.6	14.2±1.8	13.9±1.3	13.6±2.4	−0.7 (−1.1 to −0.2)*	−1.1 (−2.4 to −0.3)

Data are presented as mean±SD; for pulmonary function, n=63 4–6 weeks after surgery.
*Change from baseline is significant at the 0.01 level
DL_CO, carbon monoxide lung diffusion capacity; FEV₁, forced expiratory volume after 1 s; HR_peak, peak heart rate; SpO₂, oxygen saturation; V_Epeak, peak minute ventilation; V̇O_2peak, peak oxygen uptake.