Figure 10.

The sensitivity of HyperKPP (A) EDL and (B) soleus did not change between the ages of 1–12 months. Vertical bars represent the SE of five muscles. *Mean tetanic force of HyperKPP muscle significantly different from that of wild type. ^§Mean tetanic force at 11 mmol/L K⁺ significantly different from that at 4.7 mmol/L K⁺. ^†Mean tetanic force at 1.3 mmol/L Ca²⁺ significantly different from that at 2.4 mmol/L Ca²⁺. ANOVA and LSD, P < 0.05. LSD, least square difference; ANOVA, analyses of variance; HyperKPP, hyperkalemic periodic paralysis.