Table 4

Multivariate Analyses to Explore the Contribution of Different Parameters on Maximal Exercise Capacity (Vo2max)

Vo2 by Rest p ValueVo2 by Unloaded p ValueVo2 by AT ValueVo2 by Max p Value
Age, yrs0.60.50.10.4
Height0.30.10.30.4
EDV index, cc/m20.10.10.50.5
ESV index, cc/m20.30.30.60.6
SPAP0.30.0010.10.3
FEV10.00030.10.10.4
S'0.70.50.10.3
E'0.50.50.0080.3
Stroke volume0.10.30.50.1
Heart rate0.10.30.40.01
VT0.20.090.00080.0001
VE0.60.50.50.5
RVESA0.10.40.50.6
EF0.60.60.60.1
Mean mitral gradient0.50.50.10.3
Mitral valve area0.10.20.10.3
A-Vo2 difference stress0.30.30.40.03
p Value0.010.00010.0001<0.0001
R20.610.860.880.95

AT = anaerobic threshold; EDV = end-diastolic volume; ESV = end-systolic volume; R2 = coefficient of determination of the entire model; RVESA = right ventricular end systolic area; other abbreviations as in Tables 12, and 3.