Fig. 5.
Activation and inactivation parameters for Ito. a Activation of Ito at +10 mV expressed as % conductance of that observed at +60 mV. There was no effect of region or training on the relative activation of Ito (P > 0.05, two-way ANOVA). b Time constant of inactivation of Ito at +60 mV. The inactivation of both EPI groups was significantly faster than both ENDO groups (*P < 0.05) but there was no effect of training on the inactivation of either EPI or ENDO myocytes (P > 0.05, two-way ANOVA, n = 13–23 myocytes)