The purpose of this clinical trial is to explore whether Phase I cardiac rehabilitation can treat elderly patients with coronary heart disease complicated by sarcopenia. It will also investigate the mechanism of Phase I cardiac rehabilitation. The main questions it aims to answer are:
* Can Phase I cardiac rehabilitation enhance muscle strength ? * Can Phase I cardiac rehabilitation reduce in vivo inflammatory indicators? Researchers will compare the experimental group (Phase I cardiac rehabilitation + drug therapy + general treatment) with the control group (drug therapy + general treatment) to see if Phase I cardiac rehabilitation can treat elderly patients with coronary heart disease complicated by sarcopenia and reduce inflammatory indicators.
Participants will:
* Receive Phase I cardiac rehabilitation training（mainly includes low-intensity resistance training, breathing training and bedside cycling） or conventional drug therapy for 3 consecutive months. * Undergo examinations 10 days after training, 1 month after discharge, and 3 months after discharge respectively. * Record changes in their muscle strength and blood inflammatory indicators.
Age ≥ 60 years;
Coronary heart disease confirmed by coronary CTA or coronary angiography, with stable condition within the past 8 hours, including: ① no new or recurrent chest pain; ② no further elevation of troponin level; ③ no new signs of decompensated heart failure (dyspnea at rest accompanied by moist rales); ④ no new malignant arrhythmias or dynamic changes in electrocardiogram. Basic vital signs are normal, including: ① resting heart rate of 50-100 beats per minute; ② resting blood pressure of 90-150/60-100 mmHg (1 mmHg = 0.133 kPa); ③ oxygen saturation > 95%.
Meeting the diagnostic criteria for sarcopenia (2024 Edition of Chinese Guidelines for the Diagnosis and Treatment of Sarcopenia);
Having good compliance to ensure the completion of this study;
Severe arrhythmia, decompensated heart failure, severe respiratory failure, untreated severe aortic stenosis, acute aortic dissection, resting hypertension with systolic and/or diastolic blood pressure > 200/110 mmHg;
Mental disorders with limited cooperation ability; severe cognitive or behavioral disorders; end-stage diseases; acute diseases (e.g., acute infections, injuries) that restrict physical activity;
Poor compliance and inability to cooperate with the completion of this study.