Changes after 1 year between the control group and the intervention group.

BMI = Body mass index, HbA1c = haemoglobin A1c, HDL = high-density lipoprotein, LDL = low-density lipoprotein, N/A = not applicable, 95%CI = 95% confidence interval, HOMA-IR = homeostasis model assessment- insulin resistance. Data in parentheses are standard deviations following means. aAny weight loss = weight loss >1 kg; weight gain = weight gain >1 kg. bThe differences with corresponding 95%CI's in changes over time between control group and intervention group were determined with independent sample t-tests for continuous measures and chi-square tests for categorical measures. cP<0.05 for differences between baseline and follow-up measurements of metabolic characteristics determined with paired t-tests. dHOMA-IR was calculated as (fasting plasma glucose * fasting plasma insulin)/22.5 [26].