Fig. 2

Correlation between observed and predicted values of CPET submaximal parameters using the Z-score model. The “underweight” group was represented by blue points, the “normal weight” group by green points, and the “overweight/obesity” group by red points. The correlation between measured and predicted values using the Z-score model for VAT (panel A), VE/VCO₂ slope (panel B) and OUES (panel C)