GCG and heart failure: They found that patients treated with GLP-1 infusion had significantly better LV systolic function (LVEF changed from 21 ± 3% to 27 ± 3%  P < 0.01), exercise tolerance (VO2 max changed from 10.8 ±  .9 mL/O2/min/kg to 13.9 ±  .6 mL/O2/min/kg; P < 0.001, as well as the 6-minute walk distance, from 232 ± 15 m to 286 ± 12 m; P < 0.001), and quality of life (Minnesota Living with Heart Failure quality of life score (MNQOL) score: from 64 ± 4 to 44 ± 5; P < 0.01).