Matrix Science Medica (MSM)

Objectives: The aim of the study was to explore the association between different time periods and acute myocardial infarction; Methods: In the study, 124 patients with coronary heart disease were selected and evenly divided into an observation group and a control group with 62 patients each, the control group did not exercise, the observation group exercised and was further divided into morning and evening exercise groups, exercise information was collected by questionnaire, and the relationship between different exercise intensities, frequencies, durations, and different time periods and acute myocardial infarction was compared; Results: The corrected odds ratio (OR) between the observation group and the control group was 0.68, indicating a lower incidence of acute myocardial infarction with exercise, different exercise intensities, frequencies, durations, and time periods had an important impact on the occurrence of acute myocardial infarction, high intensity, high frequency, and long duration exercise reduced the risk, the corrected OR values for the morning and evening exercise groups compared with the control group were 0.61 and 0.57, respectively, with statistically significant differences (P < 0.05), and compared with the morning exercise group, the risk of acute myocardial infarction was 0.92; Conclusions: Patients with coronary heart disease with high exercise intensity, high frequency, and long duration had a lower risk of acute myocardial infarction, and both morning and evening exercise had a similar protective effect on preventing acute myocardial infarction.