Inclusion criteria:
The criteria for entering the plan are: at least 18 years of age, left ventricular ejection fraction (LVEF) below 55% that will be measured by echocardiography, and no recent surgery of the heart or chest, and no musculoskeletal disorders and Asthma and Chronic Obstructive Pulmonary Disease
Exclusion criteria:
Exit criteria for a patient include: recent surgery of the heart or chest, musculoskeletal disorders, asthma, chronic obstructive pulmonary disease (COPD), chronic pulmonary disease, such as bronchitis, recent pulmonary infections, use of suppressing drugs and Disagreement with the patient entering the plan and the terms of the consent form