Outcome | Effect size and precision | Heterogeneity | ||||||||
Studies | n | Estimate | 95% CI | P value | Q value | df (Q) | P value | I2 | Fail-safe N | |
HbA1c (RT vs CON) | 20 | 1172 | −0.390 | −0.600 to −0.180 | <0.001 | 61.684 | 19 | <0.001 | 69.198 | 177 |
HbA1c (RT vs AE) | 13 | 640 | 0.077 | −0.110 to 0.264 | 0.419 |
AE, aerobic exercise; CON, control; HbA1c, glycosylated hemoglobin; RT, resistance training.