The purpose and procedure of this study were explainedto the parents of each child. All children and their parents completed written informed consent. Permission was received from the medical centers and school of the children before collecting the data. We measured the body mass index (BMI) of each child. We measured TEE of each subject with three-day physical activity record (3DPAR) as well as Triaxial Research Tracker (RT3). Data on basic information sheet and 3DPAR were collected at children's home. Each child wore the RT3 for 3 days starting on Friday