Document Type : Original Articles


1 Department of Physiotherapy, University of social welfare and rehabilitation, Tehran, Iran

2 University of North Georgia, Dahlonega, USA

3 Biostatistics department, University of social welfare and rehabilitation, Tehran, Iran



Background: chronic non-specific low back pain (LBP) is a one of the most controversial issues of experts. Positive Ober`s test has been considered as a contributing factor to LBP. Common intervention to address such problems has been surgery or iliotibial band stretching. Recently it has been suggested that pelvic malalignment is the contributing factor to Positive Ober`s test. Pelvic repositioning exercises has been argued as a solution for treatment of chronic LBP followed by pelvic malalignment.
Methods: In this single blinded randomized controlled trial, 18 patients participated and assigned into control and treatment groups using block randomization method. One side Positive Ober`s test as an indicator of pelvic malalignment was used as an inclusion criterion to employ the patients who have pelvic malalignment and asymmetry. Patients were asked to complete Oswestry disability questionnaire to assess their disability. Hip internal and external rotation and shoulder internal and external rotation ROM measured by a standard goniometer. Hip adduction and abduction ROM measured by an inclinometer. Outcome measures reassessed after 12 days. Data were analyzed using ANCOVA test to compare between groups.
Results: Patients in treatment group showed significant improvement of pain (p-value=0.01), ipsilateral hip adduction (p-value=0.00) and internal rotation (p-value=0.02) ROM and contralateral hip abduction (p-value=0.00) and shoulder internal rotation (p-value=0.00) ROM and Glenohumeral internal rotation deficit (GIRD) (p-value=0.001) compared with control group. There was no difference between groups for disability (p-value=0.34) and contralateral hip external rotation (p-value=0.06) and also there was no difference for contralateral shoulder external rotation (p-value=0.85) and ipsilateral shoulder internal (p-value=0.13) and external rotation (p-value=0.58).
Conclusion: Pelvic repositioning exercises are effective treatment to reduce chronic LBP through improving pelvic alignment. These exercise are also effective to improve GIRD and increase shoulder internal rotation ROM, contralateral to positive Ober`s test.