Responsiveness of the Bridge Tests in Non-specific Low Back Pain

"All subjects will be submitted to a cluster of clinical test before the starting of the first session, and at the ending of the last session of the physical therapy program. This cluster will include:~* Aberrant Movements (AM) Test,~* Active Straight Leg Raise Test (ASLR) Test,~* Supine Bridge Test (SuBT),~* Right Side Bridge Test (RBT),~* Left Side Bridge Test (LBT),~* Prone Bridge Test (PrBT),~* Passive Lumbar Extension (PLE) Test,~* Prone Instability Test (PIT)."