Background: In accordance with the SOSORT consensus, in non-invasive treatment for scoliosis, brace and various methods of kinesitherapy supplemented with physical treatments are currently used. Taking into account the fact that opinions on the effectiveness of non-invasive treatment for idiopathic scoliosis are divided, it is important to take action to verify its effectiveness. The aim of this study was to determine the effectiveness of intensive physiotherapy, which was based on the FITS concept, expressed through change in angle of trunk rotation (ATR), among children and adolescents who suffer from idiopathic scoliosis and underwent two-week rehabilitation course.Material and methods: The study included 57 children and adolescents aged 11-18 (on ave- rage 14.6±1.6) afflicted by idiopathic scoliosis. All children were assessed twice with angle of trunk rotation. The first measurement was conducted at the beginning, the second - at the end of two-week rehabilitation course, during which intensive physiotherapy, based on the FITS concept, was carried out.Results: The analysis of the collected results showed significant decrease of Angle of Trunk Rotation, where all the scoliotic curvatures were regarded (9,1±5,0 vs 6,8±3,7, p=0,000). Considerable decrease of ATR was shown both in the case of single-curve (p=0,026), and double-courve scoliosis (p=0,000). Similar observations concerned both the thoracic (p=0,000) and lumbar (p=0,013) curvature in double-curve scoliosis.Conclusions: Multifaceted impact on the child with idiopathic scoliosis used in functional intensive physiotherapy of scoliosis (FITS) leads during the two weeks to a significant reduction in the angle of trunk rotation. As a result of the therapy achieved reduction angle of trunk rotation around bending both thoracic and lumbar spine as.