Parviz Farzadinia - Department of Biology and Anatomical Sciences, Faculty of Medicine, Bushehr University of Medical Sciences, Bushehr, Iran
Alireza Asadnia - Student Research Committee, Bushehr University of Medical Sciences, Bushehr, Iran
Aria Salehpour - Student Research Committee, Bushehr University of Medical Sciences, Bushehr, Iran

The present study compares the effect of four and eight weeks of water exercises (water therapy) on increasing cardiovascular endurance inchildren under the age of 12 with spinal cord injury in Bushehr. Spinal cord injuries can be considered as one of the most common diseases of the central nervous system. It is the main cause of neurological disabilities.Causes motor-status disabilities in an evolving child there are a number of secondary disorders associated with cerebral palsy that may have a greater impact on the child and his family than spinal cord injury, which is the reason why exercise and water exercises (water therapy) are one of the most effective ways to reduce fatigue especially in children with paralysis. Materials and Methods: This quasi-experimental study was performed on 40 children with spinal cord injury. Patients were divided into two groups (one and two) of 20 persons. The group first and second group performed specific exercises in water for four and eight weeks , three days per week and one hour per day, respectively. Parameters of pulmonary cardiovascular endurance (VO2Max) were evaluated on the first, twenty-eighth and fifty-six days using descriptive statistics, oneway sampling, T-test, covariance analysis and paired t-test for moderate averages using SPSS18 software.Results: Surveys showed that patients who had regular water exercise training for four weeks had no effect on the parameters of increasing their cardiovascular pulmonary endurance (VO2Max) compared to those who performed exercises for 8 weeks. Conclusion The individuals, although they tended to spend more time without fatigue, but the results showed that shortterm exercise in water did not increase cardiovascular endurance (VO2Max) compared to the long-term group that performed exercises for eight weeks