Aerobic exercise improves infarction-induced cardiac dysfunction.

(A) Survival curve of mice in different groups, n = 8–10. Systolic and diastolic function of the left ventricle is assessed by measuring small animal ultrasound parameters, including (B) LVIDd, (C) LVIDs, (D) EF and (E) Ultrasound image acquisition (n = 6). Light microscope capture of Masson stained image with collage in the blue area, normal myocardial myofibrils in the red area, and nuclei in the dark brown area (scale bar = 0.61 μm). (F) Masson stained image capture results (G) Collagen volume fraction (CVF %) determined by digital measurement of Matson staining (n = 3). SE, S+ exercise group; S, sham group; MI, myocardial infarct group; ME, MI+ exercise group. *P<0.05, **P<0.01.