However, after GLP-1 infusion during hyperglycemia, myocardial performance was enhanced both at peak stress (11.9 ± 2.7 [GLP-1 HHC] versus 11.0 ± 2.9 cm/s [control HHC], p = 0.01) and at 30 min after dobutamine stress (6.7 ± 0.6 [GLP-1 HHC] versus 6.1 ± 0.7 cm/s [control HHC], p = 0.02) (Fig. 5b). This evidence concerns the gene GCG and Hyperglycemia.