Effect of Individualized Exercise in Elderly Patients With Coronary Heart Disease

Inclusion Criteria: * Coronary heart disease: coronary angiography confirmed patients with coronary heart disease. * Age is 60-75 years old, and the clinical sinus rhythm is stable. * Left ventricular ejection fraction was\> 40%. * Informed consent and voluntary participation. Exclusion Criteria: * Patients with severe organic cardiac and lung diseases. * Patients with hemiplegia and other physical action disorders. * A history of mental illness. * Uncontrolled hypertension, and hemodynamic instability. * Severe nephropathy and severe peripheral artery disease. * Patients with bone and joint diseases who are not suitable for exercise. * Uncontrolled endocrine system and other diseases. * Antibiotics and anti-diarrheal medications have not been used for at least 3 months.