Back pain
Conditions
Interventions
This randomized, placebo-controlled trial will include 110 participants allocated into two groups: hypnosis and placebo. In the hypnosis group, participants will listen to a 20-minute audio recording
Sponsors
Universidade Federal de Minas Gerais
Universidade Federal de Minas Gerais
Eligibility
Age
18 Years to 65 Years
Inclusion criteria
Inclusion criteria: Participants experiencing chronic nonspecific low back pain; pain and discomfort localized below the costal margin and above the inferior gluteal folds, with or without leg pain; symptom duration of at least 3 months; average pain intensity = 3 on the 0–10 numerical pain rating scale at the time of assessment; able to understand Portuguese through both written and audio materials
Exclusion criteria
Exclusion criteria: Participants with specific spinal pathologies (e.g. tumor, infection, fracture, inflammatory disease); radiculopatia lombar (defined as at least two of the following signs: muscle weakness, altered reflexes, or sensory loss in the distribution of the same spinal nerve); diagnosis of neurological, renal, cardiovascular, psychiatric conditions; pregnancy or postpartum period of less than 3 months; cognitive impairment
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| Reduction in pain intensity assessed immediately after the intervention, referring specifically to pain at the moment of assessment, using the Numeric Pain Rating Scale (NPRS, 0–10), where 0 indicates “no pain” and 10 indicates “worst imaginable pain” | — |
Secondary
| Measure | Time frame |
|---|---|
| Reduction in pain intensity assessed 24 hours and 7 days after randomisation, referring specifically to pain at the moment of assessment, using the Numeric Pain Rating Scale (NPRS, 0–10), where 0 indicates “no pain” and 10 indicates “worst imaginable pain;Increase in the pressure pain threshold assessed immediately after the intervention using pressure algometry at standardized points on the anterior forearm. Pressure pain threshold is defined as the lowest pressure value (in KgF) perceived as painful, reflecting both peripheral and central pain sensitivity;Improvement on the Cold Pressor Test, which evaluates pain threshold and tolerance to cold-induced pain, measured in seconds while the participant keeps their hand immersed in cold water (1–4 °C).;Improvement on the timed up and go assessed immediately after the intervention, measured the time (in seconds) required for the participant to stand up from a chair, walk 3 meters, turn, walk back, and sit down, reflecting functional mobility and balance;Improvement on the five times sit-to-stand test assessed immediately after the intervention to measure the time (in seconds) required for the participant to stand up from a chair and sit down five consecutive times. This test assesses functional mobility, transfer ability, lower-limb strength, and endurance | — |
Countries
Brazil
Contacts
Public ContactRafael Pinto
Universidade Federal de Minas Gerais
Outcome results
None listed