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Information Journal Paper

Title

The effects of low-volume high-intensity interval versus moderate intensity continuous training on heart rate variability, and hemodynamic and echocardiography indices in men after coronary artery bypass grafting: A randomized clinical trial study

Pages

  260-271

Abstract

 BACKGROUND: Heart rate variability (HRV) declines after coronary artery bypass grafting (CABG). The purpose of this study was to evaluate the effect of low-volume High-Intensity Interval Training (LV-HIIT) and moderate-intensity Continuous Training (MICT) on HRV as well as, hemodynamic and echocardiography indices. METHODS: Forty-two men after CABG (55. 12 ± 3. 97 years) were randomly assigned into LVHIIT, MICT, and control (CTL) groups. The exercise training in LV-HIIT consisted of 2-minute interval at 85-95 percent of maximal heart rate (HRmax), 2-minute interval at 50% of HRmax and 40-minute interval at 70% of HRmax in MICT for three sessions in a week, for 6-weeks. HRV parameters were evaluated by 24-hour Holter electrocardiography (ECG) recording, and echocardiography parameters at baseline and end of intervention were measured in all 3 groups. RESULTS: At the end of the intervention, left ventricular ejection fraction (LVEF) significantly increased in LV-HIIT group (58. 53 ± 7. 26 percent) compared with MICT (52. 26 ± 7. 91 percent) and CTL (49. 68 ± 7. 27 percent) groups (P < 0. 001). Furthermore, mean R-R interval, root mean square successive difference (RMSSD) of R-R interval, and standard deviation of R-R interval (SDRR) in LV-HIIT group considerably increased compared with MICT group (P < 0. 001). High-frequency power (HF) significantly increased in LV-HIIT and MICT groups compared with CTL group (P < 0. 001). On the other hand, low frequency (LF) and LF/HF ratio significantly decreased in LV-HIIT group in comparison with MICT group (P < 0. 010). CONCLUSION: These results suggest that LV-HIIT has a greater effect on improvement of cardiac autonomic activities by increasing R-R interval, SDRR, RMSSD, and HF, and decreasing LF and LF/HF ratio in patients after CABG.

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    APA: Copy

    GHARDASHI AFOUSI, ALIREZA, Holisaz, Mohammad Taghi, SHIRVANI, HOSSEIN, & PISHGOO, BAHRAM. (2018). The effects of low-volume high-intensity interval versus moderate intensity continuous training on heart rate variability, and hemodynamic and echocardiography indices in men after coronary artery bypass grafting: A randomized clinical trial study. ARYA ATHEROSCLEROSIS, 14(6), 260-271. SID. https://sid.ir/paper/726959/en

    Vancouver: Copy

    GHARDASHI AFOUSI ALIREZA, Holisaz Mohammad Taghi, SHIRVANI HOSSEIN, PISHGOO BAHRAM. The effects of low-volume high-intensity interval versus moderate intensity continuous training on heart rate variability, and hemodynamic and echocardiography indices in men after coronary artery bypass grafting: A randomized clinical trial study. ARYA ATHEROSCLEROSIS[Internet]. 2018;14(6):260-271. Available from: https://sid.ir/paper/726959/en

    IEEE: Copy

    ALIREZA GHARDASHI AFOUSI, Mohammad Taghi Holisaz, HOSSEIN SHIRVANI, and BAHRAM PISHGOO, “The effects of low-volume high-intensity interval versus moderate intensity continuous training on heart rate variability, and hemodynamic and echocardiography indices in men after coronary artery bypass grafting: A randomized clinical trial study,” ARYA ATHEROSCLEROSIS, vol. 14, no. 6, pp. 260–271, 2018, [Online]. Available: https://sid.ir/paper/726959/en

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