Insulin values in type 2 diabetic patients were lower in the experimental group than in the control group in both subgroups of outcome indicators after experiencing high intensity and low-medium-intensity resistance training, but this difference was not significant (MD = −1.05, 95% CI: [−3.14, 0.55], I2 = 0%, Test for overall effect p = 0.35; MD = −1.30, 95% CI: [−3.14, 0.55], I2 = 83%, Test for overall effect p = 0.17). Here, INS is linked to type 2 diabetes mellitus.