| Outcome Measures: |
Primary: Liver fat content(%), MRS (magnetic resonance spectroscopy analysis): liver fat content (%)., 24 weeks | Secondary: Abdominal visceral fat area(cm2), MRI (magnetic resonance imaging): abdominal visceral fat area (cm2), 24 weeks|Abdominal subcutaneous fat area(cm2), MRI(Magnetic Resonance Imaging):abdominal subcutaneous fat content (cm2), 24 weeks|Lipid profiles, lipid profiles (total cholesterol, HDL-C, LDL-C, very low density lipoprotein and free fatty acids), 24 weeks|Liver enzymes, liver enzymes (Alanine aminotransferase(ALT), Aspartate aminotransferase(AST), Gamma-glutamyl transferase(GGT)), 24 weeks|Glucose metabolism, fasting plasma glucose(FPG), postprandial plasma glucose(PPG), HbA1c, fasting C-peptide and 2-hour postprandial C-peptide, 24 weeks|Body weight, Body weight, 24 weeks|Anthropometric test, waist and hip circumferences, 24 weeks|Muscle enzymes, MM isoenzyme of creatine kinase(CK-MM), MB isoenzyme of creatine kinase(CK-MB), 24 weeks
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