Psoas Muscle Release in Non-specific Mechanical Low Back Pain
ConditionLow Back Pain
Trial statusNot yet recruiting
Trial phaseNot applicable
Trial typeInterventional
Biological sexAll
Age18-30
SponsorEscola Superior de Tecnologia da Saúde do Porto
About this trial
Nonspecific low back pain affects approximately 80% of the population at some point in their lives.
The psoas muscle-positioned between the lumbar and pelvic regions-together with the paravertebral muscles, constitutes the primary muscular group responsible for dynamic stabilization of the spine. Alterations in this muscle may contribute to the onset of low back pain by modifying spinal biomechanics, particularly through increased lumbar lordosis and greater mechanical overload in the lumbar region.
Latent myofascial trigger points are asymptomatic but can lead to muscle shortening and weakness. They are characterized by local tenderness and may provoke a localized muscular response known as a local twitch response.
The aim of this randomized experimental study was to evaluate the immediate effect of ischemic compression applied to the trigger point of the psoas muscle on pain perception and lumbar range of motion.
Researchers will compare a group with a placebo technique to see if the release of the psoas muscle produces effects in this condition.
The variables analyzed in this study included low back pain, assessed using the Numeric Pain Rating Scale (NPRS); lateral lumbar flexion (right and left), measured using a tape measure (distance from the third finger to the floor); and lumbar flexion range of motion, assessed using the Schober test.
Eligibility criteria
This trial does not accept healthy volunteersQualifiers
Age between 18 and 30 years.
Presence of low back pain for less than 1 month.
Presence of a latent trigger point in the psoas muscle.
Disqualifiers
Volunteers with low back pain caused by: Disc herniation, Tumor, Infection, Fracture, Osteoporosis, Structural deformity or Inflammation.
Individuals with a history of spinal surgery.
Continuous use of analgesics.
Participants who had undergone manual therapy in the previous month.
Trial design
Design model
Parallel
Treatments tested in this trial
Trigger point release
Other interventionIschemic compression technique is based on the application of manual pressure to treat trigger points. The patient was asked to lie in the supine position on the examination table. The osteopath identified the muscle through deep palpation and movement-based muscle differentiation, then applied 90 seconds of tolerable pressure to the trigger point on both sides.
Simulation of the intestinal listening technique.
Other interventionThe patient will be asked to lie in a supine position on the treatment table to simulate the listening technique for assessing the mobility and motility of the small intestine without influencing the final results, with the sensory hand placed below the umbilicus.
Treatment groups
40 Participants
are divided into 2 treatment groupsGroup A: Control groupPlacebo comparator 1 intervention
Group B: Experimental groupExperimental treatment 1 intervention
Trial outcomes
Primary outcomes
1
Low back pain
Low back pain was evaluated using the Numeric Pain Rating Scale (NPRS), a widely used unidimensional instrument for assessing pain intensity in adults. The NPRS is a segmented numeric adaptation of the Visual Analogue Scale (VAS), consisting of a horizontal bar with 11 points, where values range from 0 ("no pain") to 10 ("worst imaginable pain"). Each participant was asked by the researcher to indicate the number, from 0 to 10, that best represented their pain level.
Time frame
Immediately after the intervention2
Range of motion
Lumbar lateral flexion was assessed using a measuring tape to evaluate the distance from the third fingertip to the floor, while lumbar flexion was measured using the Modified Schober Test. For lateral flexion, the participant stood upright and performed lateral flexion to the right, with the evaluator measuring the distance from the third finger to the floor. The same procedure was repeated for the left side. The Modified Schober Test was used to assess lumbar flexion. With the participant standing, the evaluator identified the posterior superior iliac spines (PSIS) and marked a point 15 cm above it. The participant then performed maximal forward trunk flexion with knees extended, and the distance between the two marks was measured. Lumbar flexion range was the difference between the initial 15 cm and the measurement after flexion.
Time frame
Immediately after the interventionLocations
Sponsors and contacts
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Source ClinicalTrials.gov
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