This study tested the effect of Galileo Therapy on subjective back-pain (18 Hz, position 3, 7 minutes, 2/week, 12 weeks, hip-tilting in standing). The control group performed lumbar extension exercises, sit-ups and Leg-Press on different exercise-devices. Galileo Therapy reduced the subjective back-pain by 67% (Visual Analog Scale, P-VAS). The control group showed comparable results but needed much more time.