After dietary intervention for half a year on the IFG population , BMI ( ( @ @ ) kg/m ( @ ) ) , FBG ( ( @ @ ) mmol/L ) , FINS ( ( @ @ ) mU/L ) , HOMA-IR ( @ @ ) , leptin ( ( @ @ ) g / L ) , LCN-@ ( ( @ @ ) g/L ) of intervention group were decreased significantly compared to the levels of BMI ( ( @ @ ) kg/m ( @ ) ) , FBG ( ( @ @ ) mmol/L ) , FINS ( ( @ @ ) mU/L ) , HOMA-IR ( @ @ ) , leptin ( ( @ @ ) g/L ) , LCN-@ ( ( @ @ ) g/L ) before dietary intervention , t values were @ , @ , @ , @ , @ and @ , respectively , and all P values were < @ , while ADP ( ( @ @ ) mg/L ) of intervention group after dietary intervention was increased significantly compared to the level of ADP ( ( @ @ ) mg/L ) before dietary intervention , t = -@ and P < @ .