SOD1 and gestational diabetes: HOMA-IR was positively correlated with weight gain, E, NE and cortisol (r = 0.249, 0.242, 0.663, 0.313, all p < 0.01), E and HOMA-IR were negatively correlated with SOD in GDM Intervention Group (r = −0.306, −0.213, both p < 0.01).