Segmental Chiropractic Spinal Manipulation Does not Reduce Pain Amplification and the Associated Pain-Related Brain Activity in a Capsaicin-Heat Pain Model.
SMT
manual therapy
pain
pain modulation
spine
Journal
Frontiers in pain research (Lausanne, Switzerland)
ISSN: 2673-561X
Titre abrégé: Front Pain Res (Lausanne)
Pays: Switzerland
ID NLM: 9918227269806676
Informations de publication
Date de publication:
2021
2021
Historique:
received:
30
06
2021
accepted:
11
10
2021
entrez:
17
3
2022
pubmed:
18
3
2022
medline:
18
3
2022
Statut:
epublish
Résumé
Musculoskeletal injuries lead to sensitization of nociceptors and primary hyperalgesia (hypersensitivity to painful stimuli). This occurs with back injuries, which are associated with acute pain and increased pain sensitivity at the site of injury. In some cases, back pain persists and leads to central sensitization and chronic pain. Thus, reducing primary hyperalgesia to prevent central sensitization may limit the transition from acute to chronic back pain. It has been shown that spinal manipulation (SM) reduces experimental and clinical pain, but the effect of SM on primary hyperalgesia and hypersensitivity to painful stimuli remains unclear. The goal of the present study was to investigate the effect of SM on pain hypersensitivity using a capsaicin-heat pain model. Laser stimulation was used to evoke heat pain and the associated brain activity, which were measured to assess their modulation by SM. Eighty healthy participants were recruited and randomly assigned to one of the four experimental groups: inert cream and no intervention; capsaicin cream and no intervention; capsaicin cream and SM at T7; capsaicin cream and placebo. Inert or capsaicin cream (1%) was applied to the T9 area. SM or placebo were performed 25 min after cream application. A series of laser stimuli were delivered on the area of cream application (1) before cream application, (2) after cream application but before SM or placebo, and (3) after SM or placebo. Capsaicin cream induced a significant increase in laser pain (
Identifiants
pubmed: 35295444
doi: 10.3389/fpain.2021.733727
pmc: PMC8915690
doi:
Types de publication
Journal Article
Langues
eng
Pagination
733727Informations de copyright
Copyright © 2021 Provencher, Northon and Piché.
Déclaration de conflit d'intérêts
The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest.
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