kim from independence, mo on 6/16/2009 11:00:05 PM:
Make sure your bike fits you. I used to have back trouble, but since I went from a "comfort" bike (with which I had back pain) to a trail/road bike (non-raised handles, less padded and narrower seat), I have not had any bike-riding related pain. It is also very important that your seat is adjusted high enough so you aren't bending your knees too much when pedaling. Having a bike that fits me has made all the difference.