Purpose. To conduct an eight week intervention on the Gyrotonic Expansion System® to observe changes in spinal mobility, core stability, and pain measurements in patients with low back pain (LBP).

Methods. Low back pain participants (n=13) were randomized to the exercise and control group. The exercise group participated in 8 weeks of Gyrotonic training. Through pre and post-testing, participants were examined for spinal mobility through the Modified-Modified Schober Technique (MMST) which measures forward flexion and hyperextension. A goniometer determined the participant's right and left lateral flexion and right and left rotation. Core stability was measured through the Sahrmann Core Stability Test (SCST). Oswestry Low Back Pain Disability Questionnaires (ODQ) measured pain scores. Separate 2 x 2 (Time by Groups) Mixed-Design ANOVA was used to determine with-in subject and between-subject effects.

Results. Ten participants completed the post-testing. Seven participants were chronic (CLBP) and three were acute LBP sufferers. No significant differences were found in the range of motion (ROM) assessments ( p > .05), except for Left rotation (p < .05). Significant differences were found between groups in the SCST (p < .05). No significant differences were found in ODQ scores between groups (p > .05).

Conclusions. Even though there were no differences between groups in their pain scores and ROM measures, the present study provides evidence that eight weeks of Gyrotonic training elicits improvements in trunk stability in patients with LBP. Also, a decrease in pain scores was present in participants who were CLBP sufferers.