In brief: The purpose of this study was to evaluate the effects of a structured rehabilitation program on the strength and flexibility of children with surgically corrected congenital heart disease. Twelve children (eight boys, four girls) participated in one-hour exercise classes, two times per week for 12 weeks. Results showed minimal changes in upper extremity strength, but lower extremity strength improved 10% and 5% on the right and left sides, respectively. Flexibility improved about 25% in the lower extremities. Improvement was also noted in neck flexion, hip and oblique rotation, hamstring and low back stretch, and heel cord stretch. These findings indicate that this type of program can improve strength and flexibility in children who have undergone complex heart surgery and may help them achieve a more normal life-style.