Clinical characteristics of study population.

Data are presented as mean ± SE or as % (SE). SBP, systolic blood pressure; DBP, diastolic blood pressure; BMI, body mass index; ASM, appendicular skeletal muscle mass; HDL, high-density lipoprotein; HOMA-IR, homeostasis model assessment-insulin resistance; WBC, white blood cell; AST, aspartate aminotransferase; ALT, alanine aminotransferase; CHD, coronary heart disease. aRegular physical activity was indicated as yes when the subject does severe exercise on a regular basis (for more than 20 min at a time and more than three times per week).