Abstract: Objective To analyze the effect of exercise rehabilitation in the elderly patients with mild to moderate chronic heart failure(CHF). Methods From January 2020 to December 2022, 104 elderly patients with mild to moderate CHF (New York Heart Association cardiac function classification Ⅱ-Ⅲ grade) were randomly divided into two groups, with 52 cases in each group. The control group was given conventional anti-heart failure therapy, and the observation group was given standardized exercise load rehabilitation guidance based on the conventional anti-heart failure therapy. The changes of cardiac function, sleep quality, exercise tolerance, quality of life and the incidence rate of cardiovascular adverse events were observed and compared 6 months after discharge. Results The levels of left ventricular ejection fraction (LVEF), cardiac output (CO) and stroke volume (SV), the score of Minnesota Living with heart failure questionnaire (MLHFQ) and the 6-minute walk distance (6MWD) were significantly higher, while the score of Pittsburgh Sleep Quality Inventory (PSQI) and the incidence of adverse events 6 months after discharge were significantly lower in the observation group than those in the control group(P<0.05). The treadmill exercise time in the observation group was longer than that in the control group. With the extension of treadmill exercise time, acceleration of speed and increase of slope, the heart rate in the two groups was significantly increased, especially in the control group (P<0.05). Conclusions Standardized exercise load rehabilitation guidance can improve exercise tolerance and sleep quality of the elderly patients with mild to moderate CHF, which is worthy of clinical promotion.

Key words: exercise rehabilitation, aged, chronic heart failure, efficacy evaluation