Table 4 Correlation of clinical and functional variables with VO ₂ peak in CF patients

  Female

  ∆F508 homozygous mutation

  Exocrine pancreatic insufficiency

  Pseudomonas aeruginosa

Quantitative variables

  Age, years

  BMI, kg/m^2*

  Leukocytosis, 10⁹/mm³

  CRP, mg/L

  Serum albumin, g/L

  FEV₁ ^a*

  FVC^a*

  RV^a

  DLCO^a

  PaO₂, mm Hg

  PaCO₂, mm Hg

Cardiopulmonary exercise parameters

  V_E peak, L

  V_E/VCO₂ peak*

  BR, %*

  V_D/V_T peak*

  PaCO₂ peak, mm Hg*

  P(A-a)O₂ peak, mm Hg*

  Lactatemia peak, mmol/L*

  HR peak^a