Table 1

Change in end-expiratory lung volume (ΔEELV) following application of continuous positive airway pressure (CPAP) during wakefulness

	Subjects n	ΔEELV mL·s⁻¹				ΔEELV % SVC
		CPAP pressure cmH₂O			p‐value^#	CPAP pressure cmH₂O			p‐value^#
		3	5	7		3	5	7
Elderly	9	125.8±34.9	240.6±87.5	388.0±162.6	0.001	4.1±0.9	7.7±1.8	12.3±3.8	0.001
Young	9	120.4±47.4	242.9±81.3	343.7±108.8	0.001	2.3±0.8	4.4±1.5	6.7±1.9	0.001
p‐value^¶		0.79	0.95	0.51		0.001	0.001	0.001

Data are presented as mean±sd unless otherwise stated
SVC: slow vital capacity
^#: p‐value from analysis of variance
^¶: p‐value from unpaired t‐tests