Fig. 5.

Original data record and determination of VT1 and VT2 thresholds for the CE data in Fig. 3 (participant 8). a VT1 is at the minimum point of P _ETO₂ and VT2 is at the turning point of P _ETCO₂. b VT1 is at the minimum point of $\dot{V}\mathrm{E}/\dot{V}{\text{O}}_2$ and VT2 is the minimum point of $\dot{V}\mathrm{E}/\dot{V}{\text{CO}}_2$. c VT1 is at the deflection point of $\dot{V}{\text{CO}}_2$ vs. $\dot{V}{\text{O}}_2$ (V-slope method). d VT2 is at the deflection point of $\dot{V}\mathrm{E}$ vs. $\dot{V}{\text{CO}}_2$