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Abstract
Objective: To investigate the effectiveness of adding Mulligan{u2019}s lumbar 2SNAG3 to a conventional program on chronic nonspecific low back pain (CNSLBP). Methods: 42 participants with CNSLBP were randomly allocated into two groups. The study group (n= 23) received a selected physical therapy program consisted of stretching and strengthening exercises plus 2SNAG3 on the affected lumbar level (s), and the control group (n=19) received the selected program only. The selected program was performed 3 times / week for 1 month. Outcome measures were repositioning error (the primary outcome), pain level, and functional level, measured by a Biodex Isokinetic Dynamometer, visual analogue scale (VAS), and Oswestry disability index (ODI), respectively. Measurements were recorded before and immediately after the end of the program. Results: pre- and post- test scores revealed that both groups showed significant improvement in all dependant variables (p >.001). However, adding lumbar 2SNAG3 to the selected program resulted in higher improvement in terms of repositioning error, pain level, and functional level (p = .02, .002, .008) respectively. Conclusions: Mulligan{u2019}s lumbar 2SNAG3 can be a valuable addition to the selected physical therapy program used with CNSLBP patients, SNAG may have physiological effects beside its mechanical effect