It depends on what you are using it for. I had herniated discs and it didn't help
I tried it for herniated disks as well, and had to stop the treatment because of the pain it caused.
It can actually make the problem worse if you have a bulging disk, so make sure you understand what your back pain is caused by. If it increases your pain, stop the treatment immediately.
It should be helpful if you have tightness due to scar tissue buildup or muscle issues.