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Background and Objective: Exercise in cardiac patients after coronary artery bypass grafting (CABG) improves cardiovascular function by increasing the capillary density of the myocardium. Platelet-derived growth factor and stromal cell-derived factor-1 play an important role in angiogenesis and cell proliferation and differentiation. This study was performed to determine the effect of eight weeks of combined training on plasma levels of Platelet-derived growth factor (PDGF) and stromal cell-derived factor-1 (SDF1) in CABG patients.
Methods: In this clinical trial study, 24 patients who underwent coronary artery bypass grafting operation were selected using convenience and purposeful sampling method and randomly divided into two combined training and control groups. Subjects in combined training group were received aerobic and resistance training protocols for eight weeks, three sessions per week. Before and after training program, body composition assessments and blood sampling were performed to measure Platelet-derived growth factor (PDGF) and stromal cell-derived factor-1 (SDF1). ELISA method was used to measure PDGF and SDF1.
Results: The level of PDGF was significantly increased in intervention group in compared to control group (P<0.05). Although the level of SDF1 in the intervention group increased in intervention group in compared to control group; but this increase level of SDF1 was not significant.
Conclusion: This study showed that the eight weeks of combined rehabilitation training can promote desirable physiological adaptations in cardiovascular health by increasing the plasma levels of PDGF.