I have the vibrating rod Haider Bioswing, red learned Priomed 170 in rehab know and wanted to do with the training absolutely at home on. I was startled a bit when I saw the price, but I nevertheless ordered him because I had learned the good properties of the oscillating rod already appreciate. The high-quality workmanship can see and feel when you hold the device in his hands. The vibration behavior is extremely harmonious and the vibrations go in only one direction back and forth, that is, there is no rotation, as it may be the case for very cheap oscillating rods ever. This is an important aspect of back problems. Rotating the Schwinstabes would be harmful to the back. What makes the PROPRIOMED is that the frequency of the vibrations is adjustable. So you can adjust the difficulty level individually depending on the training progress. The frequency controller are closer towards the center, the more difficult are the exercises. Considering the bar closer to the bar ends, the exercises are easy to perform. One thus requires only a single rod for different demands. Since I have a severe osteoporosis with already two vertebral fractures, it is very important for me to train the deep muscles, but not to overwhelm me. Exactly this high standard is this vibrating rod and justice as well as the high price is justified. I do not regret the purchase.