Significant differences in change in fasting serum insulin of -5.9 pmol/L ( 95 % CI = -11.4 , -0.5 , p = 0.03 ) ; homeostasis model assessment-estimated insulin resistance of -0.28 ( 95 % CI = -0.53 , -0.03 , p = 0.03 ) ; and waist circumference of -1.42 cm ( 95 % CI = -2.54 , -0.29 , p = 0.01 ) were observed in favor of the intervention group .