EX and T2D group showed higher (EX effect) (f1, 20 = 539.2, P < 0.0001) and lower (T2D effect) (f1, 20 = 662.0, P < 0.0001) MCT1 content in soleus muscle and showed lower levels than CO group. The gene discussed is SLC16A1; the disease is type 2 diabetes mellitus.