Fig. 3

Determination of the 1^st ventilatory threshold (VT) and the respiratory compensation point (RCP) from Subject 8. a VT is at the minimal value of P_ETO₂ and RCP at the turning point of P_ETCO₂, b VT is at the minimal value of V'E/V'O₂ and RCP at the minimal value of V'E/V'CO₂, c VT is at the deflection point of V'CO₂ vs. V'O₂ ('V-slope method'), d RCP is at the deflection point of V'E vs. V'CO₂