Consumption of a synbiotic food did not show any significant change regarding the impact of insulin actions in the synbiotic group ; nonetheless , compared to the control food , it resulted in a significant decrease in serum insulin levels ( -@ vs. @ IU/mL , P = @ ) and HOMA-IR ( -@ vs. @ , P = @ ) , a significant difference in HOMA-B ( @ vs. @ , P = @ ) and a significant rise in QUICKI score ( @ vs. -@ , P = @ ) .