Abstract:Objective To explore the role of physical activity, weight gain rate, and adiponectin (APN) in the development of gestational diabetes mellitus (GDM) in the second trimester.Methods From January 2019 to July 2022, 120 cases of GDM parturients treated in our hospital (GDM group) were selected, and 360 cases of normal parturients were selected as the control group (control group). The differences in clinical data, physical activity, weight gain rate, APN, and other indicators between the two groups were compared.Results Age, body mass index (BMI) before pregnancy, family history of diabetes, and the dessert prone ratio in pregnancy in the GDM group were higher than the control group, the difference was statistically significant (P < 0.05). The comparison of physical activity degree between GDM group and control group was statistically significant (P < 0.05), and GDM group was lower than control group. Difference of weight gain rate between GDM group and control group was statistically significant (P < 0.05), and GDM group was higher than control group. The comparison of triglyceride (TG), total bilirubin (TBIL), direct bilirubin (DBIL), and APN between GDM group and control group showed statistically significant differences (P < 0.05). TG in GDM group was higher than that in control group, while TBIL, DBIL, and APN were lower than that in control group (P < 0.05). Multivariate Logistic regression analysis showed that: age [O^R = 2.440 (95% CI: 1.401, 4.249) ], BMI before pregnancy [O^R = 2.748 (95% CI: 1.704, 4.434) ], family history of diabetes [O^R = 1.759 (95% CI: 1.232, 2.514) ], physical activity degree [O^R = 0.513 (95% CI: 0.343, 0.767) ], weight gain rate [O^R = 2.059 (95% CI: 1.222, 3.467) ],and APN [O^R = 0.509 (95% CI: 0.332, 0.778) ] were influence factors of GDM (P < 0.05).Conclusion Physical activity, weight gain rate, APN are independent influencing factors of GDM, which should be paid attention to during pregnancy.