Multiple linear regression analysis with HOMA-IR as the dependent variable.

HOMA-IR was log-transformed for analysis.Model 1: adjusted for gender, age, study location, mean blood pressure, triglycerides, HDL cholesterol, smoking status, and BMI.Model 2: As model 1 plus CRF × birth weight.Model 3: adjusted for gender, age, study location, mean blood pressure, triglycerides, HDL cholesterol, smoking status, and abdominal circumference.Model 4: As model 3 plus CRF × birth weight.B, unstandardized regression coefficient; β, standardized regression coefficient; R2, coefficient of determination; VO2max, maximal oxygen uptake.