Fig. 4

Original data record and determination of VT1 and VT2 thresholds for the DLP 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. \(\dot {V}\text {CO}_{2}\)