Of the 42 participants with ID, 23 were classified as having mild ID (52%) and 19 as having borderline ID (48%). The sample did not include children with Down Syndrome. The following criteria were observed when creating the sample of children with ID: presence of intellectual disability as defined by the American Psychiatric Association (2000); children in the 6.5–12 age range; normal neurological and health status. The study excluded children with metabolic diseases, as well as musculoskeletal,cardio and respiratory system diseases, in order to avoid potential influence of neurological and health factors on physical fitness test results. Accordingly, the sample did not include children with multiple disabilities. Furthermore, the sample did not include children who regularly participated in physical activities. The other group included typically developing children from local schools who were randomly selected and aligned according to gender and age with the group of children with ID. When creating this group the following criteria were observed absence of intellectual disability; children in the 6.5–12 age range; normal neurological and health status. The study excluded participants with metabolic diseases, as well as musculo-skeletal, cardio and respiratory system diseases, in order to avoid potential influence of neurological and health factors on physical fitness test scores. This group did not include children who participated in organized physical activities, either