Fig. 4. The effect of repeated high-intensity exercise and recovery on plasma fatty acids, glycerol, ß-hydroxybutyrate and acetoacetate levels. On the x-axis, E refers to exercise and Rec to recovery. The values shown represent means ± S.E.M. (N=8). Identical superscripts on different columns indicate the absence of significant differences, whereas columns without a superscript differ significantly between each other and from any column bearing a superscript (ANOVA followed by Fisher PLSD a posteriori test; P<0.05).