Guenter, a piece of advice for your back is try to get in the water and spend as much time there as possible. Walking in chest deep water is great for your back, or swimming if you're comfortable in the water (that's the thing that helps me most when my back is acting up). Even a Jacuzzi or deep bathtub is helpful. Icing is also a great help. Good luck, and let me know if you have any questions. Take care. Greg