My lower back has been sore because I going up in weight during my squats. I never used a belt before yesterday. With the belt I guess it could be a plasibo affect but I felt that my form even with the higher weight did not suffer. I did my deadlifts with out the belt and am thinking of using the belt now for deadlifts to. Is there any negatives with using a belt? My lower back feels much better today then it would if I did not use the belt. I also ride sportbikes and it's hard to stay in the leaned postion because of the sore lower back. But I don't want to lose any strenght or development in my lower back because of the belt.