The spontaneous contraction pattern of the Transverse Abdominal muscle in chronic Pelvic Girdle Pai
Completed
- Conditions
- Low Back Pain / Pelvic Girdle Pain10023213
Recruitment & Eligibility
- Status
- Completed
- Sex
- Not specified
- Target Recruitment
- 95
Inclusion Criteria
1. Patients with posterior pelvic pain. The pain started during pregnancy or within 3 weeks after delivery and was ongoing since then. Last pregnancy was > 0.5 years previously. At least one positive test for PGP (ASLR and/or PPPP test).
2. Controls without pain anywhere among the pelvis and hips and knees during at least 3 months. Negative tests for PGP (ASLR and PPPP test). Last delivery was > 0.5 years previously.
Exclusion Criteria
Abnormal anatomy of lumbar spine, pelvis, hips and abdominal wall (congenital or as a result of severe trauma or radical surgery). Severe neurologic or rheumatic disease. Obvious psychopathology. Inability to fill in forms without any help.
Study & Design
- Study Type
- Observational non invasive
- Study Design
- Not specified
- Primary Outcome Measures
Name Time Method <p>Transversus abdominis Quotient (TAQ). TAQ is calculated by dividing the<br /><br>thickness of the transversus abdominis (TA) during forceful hip adduction by<br /><br>the thickness of the TA during Active Straight Leg Raising (ASLR) (left and<br /><br>right average).<br /><br>In formula:<br /><br>TAQ = thickness of TA during adduction / ((thickness of TA during ASLR left +<br /><br>thickness of TA during ASLR right) / 2) </p><br>
- Secondary Outcome Measures
Name Time Method <p>The thickness increase of the TA (in % of the thickness at rest) at 7 low<br /><br>levels of hip adduction force (20-140 Newton).<br /><br>Force increase at bilateral hipadduction in % after fastening a pelvic belt.</p><br>