INS and polycystic ovary syndrome: In the overweight PCOS group, the serum levels of LH, LH/FSH ratio, and ISI index were decreased, whereas the FBG levels, INS (namely INS_0min, INS_30min, INS_60min, INS_90min, INS_120min, and INS_180min), and the HOMA-IR and, IAUC indices were evidently increased.