Fig. 5.

Soleus muscles rates of tension development at 20 °C and 42 °C. Rates of tension development (dP/dt) were calculated at 5-min intervals from soleus twitch tensions. At 5 min, no significant differences were observed between groups stimulated at 20 °C and 42 °C, but by 30 min significant decreases were observed between the 5 and 30 min values in all groups stimulated at 42 °C. Error bars denote SEM. A number sign denotes significant difference (p < 0.05) between 5 and 30 min with groups