| Abstrakt: |
Background and Objectives Exercise-based cardiac rehabilitation (CR) programs increase physiological function. However, it is not yet clear which feature of exercise is most effective in improving important physiological performance indicators in heart patients. Therefore, this study aimed to compare the effects of high-intensity interval training (HIT) and moderate-intensity continuous training (MCT) on the metabolic equivalent of tasks (METs), submaximal myocardial oxygen consumption (MVO2submax), and heart rate recovery (HRR) of heart patients after coronary artery bypass graft (CABG) surgery. Subjects and Methods Twenty-four post-CABG patients (15 males and 9 females) with a mean age of 60.75 ± 3.16 years and a mean body mass index (BMI) of 28.40 ± 1.09 kg/m² were randomly divided into three groups of HIT, MCT, and control group (CG). The training groups (HIT and MCT) trained for eight weeks, three sessions per week, and 45 min per session. The research variables (METs, MVO2submax, and HRR) were measured and compared in two stages before and after eight-weeks of CR programs. Results After eight weeks of CR programs, patients in both training groups showed a significant improvement in METs, MVO2submax, and HRR (P<0.05), and the HIT group showed significantly greater improvement in METs (P=0.001) and HRR (P=0.001) compared to the MCT group. Moreover, the MCT group showed a significantly more improvement in MVO2submax (P=0.001) than the HIT group. In addition, no cardiovascular adverse events related to HIT or MCT occurred during the implementation of the study. Conclusion According to the results of the present study, HIT seems to be more effective than MCT in improving METs and HRR of post-CABG patients and is safe as well. [ABSTRACT FROM AUTHOR] |
