Effect of different exercise intensity on risk of death events in patients with coronary heart disease
Objective To investigate the effect of different exercise intensity on the risk of death events in patients with coronary heart disease(CHD).Methods A total of 3 215 CHD patients from 2007 to 2018 were selected from the National Health and Nutrition Ex-amination Survey database.The patients were divided into no exercise group(n=1 354),moderate exercise group(n=1 230)and high intensity exercise group(n=631)according to different exercise intensity.The baseline data of the three groups were recorded and compared.Kaplan-Meier survival analysis was used to describe the cumulative incidence of endpoint events in the 3 groups.Cox regres-sion model was used to analyze the risk factors of all-cause death and cardiac death in CHD patients.Results Albumin level and male ratio in the moderate exercise group and the high intensity exercise group were higher than those in the no exercise group,age,creati-nine,and the proportions of anemia,diabetes,chronic obstructive pulmonary disease,all-cause death,cardiac death and cancer death were lower than those in the no exercise group,with statistical significance(P<0.05).There were significant differences in family pov-erty index and depression degree among 3 groups(P<0.05).Kaplan-Meier survival curve showed that the incidence of all-cause death and cardiac death in the high intensity exercise group was lower than that in the no exercise group and the moderate intensity exercise group,and the differences were statistically significant(P<0.05).Cox regression analysis showed that inactivity was an independent risk factor for all-cause death and cardiogenic death in CHD patients(P<0.05).Conclusion Moderate to high intensity exercise is associated with a reduced risk of all-cause death and cardiac death in patients with CHD.
Coronary heart diseaseExercise intensityAll-cause deathCardiac death