In 70 children with mild idiopathic scoliosis I degree by the method of Cobb, participating in two or several rehabilitation camps, and in the control group of 22 healthy children ventilatory lung parameters: vital capacity--FVC, FVC%pred., Maximal forced expiratory volume one sec.--FEV1, FEV1%pred., FEV1% FVC, and Maximal Mid Expiratory Flow--MMEF, MMEF%pred. and Maximal Voluntary Ventilation--MVV were determined. Tests were carried out with use of the Vitalograph and Jaeger Spirometer after several four-week rehabilitation camps. Intensive movement rehabilitation with breathing exercises and relaxation with Yoga was used in children. The mean values of spirometric parameters were correlated between the examined groups and statistically significant increased values of parameters MMEF% pred., MVV were defined in the group of children with scoliosis.