Inclusion Criteria:  ages between 10 and 14 years. the BMI between 20 and 25 Kg/m2. the children were considered as high risky CDH as they developed respiratory distress in the first days of their life. CDH was corrected surgically immediately after birth. children are still in following upstate in pediatric and physical therapy departments.  Exclusion Criteria:  physical disability. diaphragmatic eventration. unable to perform all tests or procedures. children with cardiac anomalies