This study shows the effect of Galileo Therapy (20Hz, 3x3 Min., 4 sessions per week, over 20 weeks) in CP patients between 11 and 20 (GMFCS II/III). The CP-patients improved their 6 minutes walking distance by 35% (GMFCS III) and 11% (GMFCS II), their chair rise time by 18%, their muscle cross-sectional area by up to 5,6% and teir bone density by1,3% in the spine and by 2,2% in the legs...