Objective: This study aimed to evaluate the effect of sacroiliac joint (SIJ) mobilization and/or self-mobilization on the level of soft tissue pain threshold in 21- to 23-year-old asymptomatic women (n = 20).
Methods: The FPIX Wagner Algometer was applied to compute the pressure pain threshold (PPT) over the right and left side of the iliolumbar ligament and lumbar erector spinae (L3). Measurements were taken of the right SIJ before and after a randomized protocol of oscillating mobilization, self-mobilization, and placebo treatment.
Results: A main effect of intervention (mobilization, self-mobilization, placebo) was confirmed by analysis of variance, with increases in PPT over the iliolumbar ligament (F = 13.04, P < .05) and erector spinae (F = 12.28, P < .05) on the mobilized side. The Wilcoxon test indicated that SIJ mobilization increased PPT over the iliolumbar ligament (P < .05) and erector spinae (P < .05) on both sides. Self-mobilization increased erector spinae PPT on the exercised side (P < .05), whereas the placebo did not cause any changes in PPT (P > .05).
Conclusion: The study provides evidence of local and global pain modulation resulting from oscillatory mobilization of the SIJ in women without pain symptoms. Self-mobilization of the SIJ has limited analgesic application.
Author keywords: Pain; Pelvis; Spine; Therapeutics
Author affiliations: University School of Physical Education in Wroclaw, Faculty of Physiotherapy, Wrocław, Poland
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