BACKGROUND: Heart disease is the most common cause of mortality worldwide, and heart surgery frequently occurs. The results are strongly dependent on lifestyle modification and especially sports exercises. OBJECTIVE: In this study, aimed to compare the effect of eight weeks of aerobic and combined training on systolic cardiac function in heart failure patients after coronary artery bypass surgery. METHODS: In this randomized clinical trial, 30 cardiac patients under CABG surgery at Kermanshah Heart Center were randomly divided into three groups, control, combined, and aerobic training. The protocols of the combined group included two movements of the upper limbs (pectoralis major and deltoid muscles) and two movements of the lower limbs (quadriceps and hamstring muscles) by three sets/10Rep and aerobic group with 60 to 85-minute exercises at 70 to 85% peak HR in three sessions per week for eight weeks. The collected data were analyzed using the SPSS software version 22, One-way ANOVA, and Tukey tests; p < 0.05 was considered significant. RESULT: After eight weeks, Systolic heart function wasn't increased in the control group (p > 0.05) but was raised in the aerobic and combined training groups (p = 0.0001). There was no significant difference between in two intervention groups (p > 0.05). CONCLUSION: Aerobic and combined exercises positively affect systolic cardiac function after coronary artery bypass surgery. Therefore, doing both exercises in these patients is recommended.

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