The effect of different intensities of rehabilitation exercise on patients with cardiac dysfunction after acute myocardial infarction
Objective To compare the benefits of different intensities of rehabilitation exercise in patients with cardiac insufficiency after acute myocardial infarction,to provide a clinical basis for guiding rehabilitation exercise for these patients.Method The patients with cardiac dysfunction after emergency operation of acute myocardial infarction admitted to the 908 Hospital of the Joint Support Force of the Chinese People's Liberation Army from June 2021 to February 2023 were selected as the research objects,they were randomly di-vided into the resting(REST)group,low-intensity training(LICT)group,moderate-intensity training(MICT)group and intermittent high-intensity training(HIIT)group,who were given with rehabilitation exercises at different intensities for 24 weeks,three times a week.LVEF,LVEDv,E peak,LA-ap,NT-proBNP and 6-minute walking distance was compared,and the follow-up on the occur-rence of major adverse cardiovascular events was performed.Results A total of 75 patients were included in the study,including 18 pa-tients in the REST group,19 patients in the LICT group,17 patients in the MICT group,and 21 patients in the HIIT group.There was no significant difference between the four groups in terms of general clinical data such as gender and age,as well as cardiac function in-dexes,including LVEDv,NT-proBNP and 6-minute walking distance(P>0.05).After 24 weeks of rehabilitation training,compared with the REST group,LVEDv,LA-ap and NT-proBNP was significantly reduced in the rehabilitation exercise group-MICT group and HIIT group(P<0.05);the LVEF,E peaks and 6-minute walking distance was significantly increased(P<0.05);compared with HI-IT group and MICT group,the LVEDv was further significantly decreased(P<0.05),LVEF and 6-minute walking distance was further significantly increased(P<0.05).Compared with the REST group,the 6-minute walking distance increased in the LICT group.Ad-verse cardiovascular events occurred in 7 cases in the REST group,6 cases in the LICT group,2 cases in the MICT group,and 1 case in the HIIT group.Conclusion In this study,it preliminarily demonstrates that both MICT and HIIT intensive rehabilitation training can improve the cardiac function of patients with cardiac insufficiency after acute myocardial infarction,especially HIIT,which suggests that the intermittent high-intensity rehabilitation training is appropriate for these patients.
Acute myocardial infarctionCardiac rehabilitation exercisesStrength trainingCardiac function