Abstract Summary
The objective of the study was to report axial stiffness changes in participants with low back pain (LBP) after two weeks of treatment with a non-thrust chiropractic spinal manipulative technique (flexion-distraction). Twelve participants with LBP (age 18-65; mean: 42) were recruited for this study. After completing the consent process, which included a written signed consent form, all participants received an exam from a licensed doctor of chiropractic to ensure eligibility and safety. Participants were prone on a flexion distraction table instrumented with a force transducer and linear potentiometer to measure traction force and axial displacement. The ankles were strapped to the table while the upper thorax was secured using a wide Velcro® strap. Three axial traction cycles were applied with a force of up to 100N and the corresponding displacement was measured before the first treatment and again after two weeks. We observed decreases in axial stiffness after two weeks
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