Fig. 3

Bland–Altman plots showing the difference against the average circulating FABP4 concentrations between the venous and capillary blood in the resting (a) and exercising state (b). Solid lines represent the mean bias and the 95% limits of agreement. There was no significant bias in circulating FABP4 concentrations between the venous and capillary blood in the resting state (p = 0.453). A significant bias in circulating FABP4 concentrations between the venous and capillary blood was observed in the exercising state (p < 0.001). There was no correlation between the difference and average circulating FABP4 concentrations between the venous and capillary blood in both resting (p = 0.111) and exercising state (p = 0.170)