The Effects of Exercise on the Sympathovagal Regulation of Heart and Functional Capacity in Patients Following Coronary Artery Bypass Grafting.

The autonomic dysfunction of heart and persistent tachycardiais seen with reduced functional capacity following surgical revascularization. Evidence on the role of exercise training is limited in sympathovagal dysfunctions. This Randomized controlled trail included stable post coronary bypass surgery patients in control (13) and study group (12). The study group received thrice/week training for 12 weeks after discharge and the control group received a routine care. The R-R Interval Variability and the functional capacity (6-minute walk test) assessed before and after 12 weeks of the training. The study group had increase in functional capacity and a positive correlation between the RRIV analysis and functional capacity after training (p<0.05). Phase II exercise training after coronary bypass surgery had a significant improvement of the functional capacity. There was a significant positive correlation between R-R interval variability and the functional capacity in the training group. [ABSTRACT FROM AUTHOR]