Fig. 4. Effects of halothane (A ) and sevoflurane (B ) on postrest potentiation in control (n = 6) and diabetic (n = 6) rats. AF = active isometric force normalized per cross-sectional area; B0 = last beat before rest; B1 = first beat after rest. Because baseline values were significantly different (P < 0.05), the between-group differences were significant (P < 0.05), but the interactions for halothane and sevoflurane were not significantly different, indicating that the response to halogenated anesthetic agents was not significantly modified between control and diabetic rats. Values are presented as mean ± SD. *P < 0.05 versus  baseline values.