Figure 5. Respiratory exchange ratio (RER) during and after exercise at 60%VO_2max and Fat_max in the morning (a) and evening (b) trials. Data represent the means ± standard errors. * p < 0.05, ** p < 0.01, significantly different from the 60%VO₂max values of the morning Fatmax trial. ## p < 0.01, ### p < 0.001, significantly different from 60%VO₂max values in the evening Fatmax trial.