The aim of this study compares the effects of elastic band and free weights on functional capacity, lung function and quality of life in phase 2 coronary artery bypass grafting patients. Resistance training is vital in cardiac rehabilitation for improving physical function, strength, and independence. These patients typically experience reduced functional capacity and lung function due to post-surgical deconditioning and inactivity, which can also impact quality of life.Determining whether elastic bands or free weights provide greater benefits in these areas may help optimize cardiac rehabilitation protocols by identifying a safe, effective, and accessible approach for improving patient outcomes. This research has the potential to guide evidence-based resistance training in post- coronary artery bypass grafting rehabilitation, ultimately supporting recovery and enhancing quality of life of patients.