spine

Hi was recently diagnosed with a herniated disc in my lower back (L4-L5) my doctor suggested that i snowboard with some sort of lower back belt(not a must, but it might help) since i don't REALLY need it i am aiming for something affordable. it comes down to these three (can't post any links...

Hey everybody, I have disc herniation in my lower back (L5). I have never tried these sports but I really would like to do at least one of them. Which would be the better one for me? Could you give me some advises? Thanks a lot! Geri