Reducing waist circumference by at least 3cm is recommended for improving metabolic syndrome in obese Japanese men

Results After a 1-year follow-up, the parameters of metabolic syndrome were significantly improved. The prevalence of metabolic syndrome was significantly reduced in subjects with at least 3 cm of waist circumference reduction (Group R). However, in subjects without such reduction (Group C), the prevalence of metabolic syndrome was similar to baseline levels. The prevalence of abdominal obesity, hypertension and dyslipidemia was also significantly reduced in Group R. In addition, there were remarkable differences of delta triglyceride (delta represents positive changes in parameters) and delta HDL cholesterol between Group R and Group C. Conclusion At least 3 cm of waist circumference reduction may be beneficial for improving metabolic syndrome in obese Japanese men. Keywords Metabolic syndrome Waist circumference Hypertension Dyslipidemia Impaired glucose tolerance