Table 2.

Echocardiographic data at rest and their corresponding exercise parameters.

Variable	IPF∗ (n = 20)	Control∗ (n = 10)	95% CI of difference	P
mPAP (at rest, mmHg)	21.8 ± 6.2	15.4 ± 4.5	−10.9 to −1.7	.008
mPAP (peak exercise, mmHg)	42.4 ± 16.0	28.0 ± 9.8	−25.7 to −2.9	.015
mPAP (peak – rest, mmHg)	20.6 ± 11.8	12.6 ± 7.6	−16.4 to 0.4	.001
RVLS % (at rest)	−21.1 ± 3.8	−23.6 ± 2.1	−5.1 to 0.2	.068
RVLS % (peak)	−17.0 ± 4.5	−26.8 ± 3.1	−13.1 to −6.5	<.001
RVLS % (peak) – GLS% (at rest)	4.1	−3.2	−10.2 to −4.4	<.001

IPF = idiopathic pulmonary fibrosis, mPAP = mean PA pressure, RVLS = right ventricle longitudinal strain.

^∗Data are presented as the mean ± standard deviation.