Objective
The purpose of this study is to evaluate the effectiveness and safety of aerobic exercise program in cardiac patients.

Method
Twenty patients participated in 6 weeks of aerobic exercise with telemetry monitoring as an outpatient rehabilitation program. For the comparison of physiologic changes, we used graded exercise test (GXT) by means of modified Bruce protocol before and in 6 weeks after aerobic exercise training. Exercise prescription for cardiac rehabilitation was composed of intensity, mode, frequency and duration. By use of EKG telemetry and monitoring of blood pressure and Borg RPE (ratings of perceived exertion) scale, we were monitored patients status during exercise.

Results
In six weeks after aerobic exercise training, the hemodynamic and metabolic responses were improved and statistically significant parameters were as follows: exercise time, maximal METs, resting heart rate, maximal heart rate, submaximal rate pressure product, maximal expired volume, maximal oxygen consumption rate and anaerobic threshold.

Conclusion
We concluded that six week cardiac rehabilitation program is useful and safe to improve the aerobic capacity for cardiac patients.