breathing reserve in CPET


  • normal breathing reserve

BR=MVVVemaxBR = MVV - V_emax

  • VeV_e: minute ventilation
  • MVVMVV: maximum voluntary ventilation, either FEV1×40FEV_1 \times 40 or 12 seconds rapid deep breathing, x 5

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Footnotes

  1. Principles of Exercise Testing and Interpretation