Introduction & Objective: The aim of this study was to compare the resting energy
expenditure and metabolic efficiency before and after of aerobic exercise in spastic cerebral palsy children (mean age of 11 years) and also to compare with those of normal children.

Materials & Methods : Fifteen dipelegia spastic cerebral palsy children (experimental group) participated in exercise–rehabilitation program by voluntarily and the peers eighteen able body children(control group) were selected randomly. The experimental group(cp) performed rehabilitation program for 3 months,3 session in week with work intensity(%HRR=46±2.5)equal to144_bpm of heart rate. The values were measured on tantory cycle ergometer according to Macmaster protocol.

Results: Rest and exercise heart rate and exercise intensity(%HRR) in patients decreased after rehabilitation program(P<0.05). The resting energy expenditure was similar in cp and normal groups. The rate of oxygen cost of patients decreased in post test(P<0.05) that showed increasing in metabolic efficiency.

Conclusion: cerebral palsy children have greater exercise energy cost and lower cardiovascular fitness than normal children and exercise–rehabilitation leads to enhance of metabolic efficiency in this patients that is remarkable from clinical perception.