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Table 5 Univariate Correlations with VO2peak expressed in L/min and ml/kg/min

From: Influence of resting lung diffusion on exercise capacity in patients with COPD

N = 32 VO2peak ml/kg/min p-value VO2peak L/min p-value
SB DLCO 0.18 0.312 0.51 0.002
SB DLCO (%Pred) 0.49 0.004 0.48 0.006
IB DLCO 0.20 0.277 0.51 0.002
IB DLCO (% Pred) 0.41 0.020 0.49 0.004
IB/SB 0.01 0.974 0.37 0.039
SB DLCO/Qc 0.63 0.000 0.59 0.000
IC (L) 0.40 0.020 0.60 0.000
VT/IC −0.42 0.017 −0.55 0.001
FVC 0.41 0.018 0.54 0.001
FEV1 (% Pred) 0.38 0.030 0.22 0.217
FEF 25-75 (L/min) 0.49 0.004 0.48 0.006
FEF 75 (L/min) 0.47 0.006 0.41 0.018
Wt (kg) −0.30 0.092 0.55 0.001
BMI −0.42 0.017 0.32 0.078
BSA 0.16 0.370 0.64 0.000
QOL −0.23 0.200 −0.05 0.773
GOLD classification −0.27 0.140 −0.20 0.275
  1. SB single breath method, IB intra-breath method. Values in columns 2 through 5 that are most significantly linked to exercise capacity based on VO2 peak are in bold and italics. In column 1, only the variables that predict VO2 peak in ml/kg/min in a multiple regression analysis, are in bold.