RT - Journal Article T1 - The effects of interval exercise training on heart rate recovery and heart rate variability after coronary artery bypass grafting JF - RJMS YR - 2016 JO - RJMS VO - 23 IS - 147 UR - http://rjms.iums.ac.ir/article-1-4104-en.html SP - 91 EP - 98 K1 - heart rate recovery K1 - heart rate variability K1 - interval exercise training AB - Abstract: Background: Hear rate turbulence, Disturbances in Vagal activity and reduced heart rate variability (HRV) is observed in individuals after coronary artery bypass grafting. Exercise training is recommended to improve these failures. Therefore, the aim of this study was to investigate the effects of interval exercise training on heart rate recovery (HRR) and heart rate variability after coronary artery bypass grafting (CABG). Methods:The subjects of this study were those who had gone under CABGin 501 Artesh Hospital and had passed one month of recovery. The subjects were divided into two groups of training (n=12) and control (n=12) after preliminary evaluations and performing exercise test. The patients underwent 4 weeks of interval exercise training, 3 times a week, in Tehran heart center. T-test was used to evaluate the intra-group differences and independent t-test was used to evaluate the difference between groups (p < 0.05). Results:The result showed that parameters of HRV including TP, HF, LF and Lf/HF had been significantly affected by 4 weeks of interval exercise training. Interval exercise training had also significantly reduced the HRR in 1-3 min after exercise training. Conclusion:As the two important indicators of mortality (HRV and HRR) had improved after interval exercise training, this type of exercise training can be recommended to the patients who undergo CABG for better recovery. LA eng UL http://rjms.iums.ac.ir/article-1-4104-en.html M3 ER -