Lumbar Stabilization Exercises vs Flexor Exercises in Patients With Chronic Low Back Pain and Degenerative Spondylolisthesis

This study is a randomized controlled trial in patients with the diagnosis of degenerative spondylolisthesis.

To date, it is known that lumbar stabilization exercises are an effective treatment option in controlling pain and improving function in patients with degenerative spondylolisthesis based on previous studies, but it is not known if is this a better treatment that another exercises routine for chronic LBP (Low Back Pain).

The purpose is to compare the effectiveness on pain control and functional improvement of "lumbar stabilization exercises" vs "flexor exercises (williams exercises)".

All clinical evaluations are performed by a single physician who is blinded to the exercises, and include a full medical history, physical examination, and x-ray measurement.

After initial evaluation, patients are given a sealed envelope containing the treatment (by simple randomization assigned by the investigator). The envelope is opened by the physical therapist which schedules a monthly session and verify the correct execution of each exercise. Each patient receives a sheet with instructions of the exercises to continue daily at home.