Introduction: Due to the importance of correct posture and the association of inappropriate posture with pain in the chest and scapula, the aim of this was to investigate the impact of rehabilitation exercise on the upper crossed syndrome in coronary artery bypass surgery patients.
 
Materials & Methods: The statistical population consisted of all the 44 to 70-year-old men with coronary artery bypass surgery and upper crossed syndrome referred to Valiasr Hospital of Qom. The participants included 30 subjects (experimental group 10, control group 10 and test group10) who were randomly selected to participate in the study. In the test group a day before surgery and 8 weeks after surgery and in the control and experimental groups, 8 weeks after surgery and 8 weeks after the first test, the associated tests were run. To analyze the data, t-test Wilcoxon, and analysis of covariance were used.
Findings: According to the results of the experimental group, the exercises had a significant positive (p<0.05) effect on kyphosis and forward head postures and had a positive, but not significant, effect on rounded shoulders. In the test group, the trainings had a significant positive effect on kyphosis, forward head, and rounded shoulder on the left side (p<0.05), while it had a positive, but non-significant, effect on rounded shoulder on the right side.
 
Discussion & Conclusions: In the present study, combination trainings using isometric, tread band, and stretching movements were effective in correcting forward head, kyphosis, and rounded shoulder postures in patients undergoing coronary artery bypass surgery.