Abstract Background Two-dimensional speckle tracking echocardiography (STE) is a relatively new method to detect regional myocardial dysfunction. To assess left ventricular (LV) regional myocardial dysfunction using STE in Duchenne muscular dystrophy model dogs (CXMDJ) without overt clinical signs of heart failure. Methods Six affected dogs. 8 copyright dogs with CXMDJ. https://unitedssports.shop/product-category/ball-softballs/