Fig. 5. Muscle glucose (A) and glucose-6-phosphate (B) concentrations in fish
treated with metyrapone or saline prior to exercise or cortisol after 5 min of
exercise. R, pre-exercise, post-injection value. Values are means ± 1
S.E.M.. (N=8 for each group). *Significant
difference (P<0.05) from the pre-exercise value;
significant difference (P<0.05) from the corresponding
control value.