Healthy Volunteers Clinical Trial
Official title:
Locating Nociceptive Stimuli Applied to the Lumbar Region in Healthy Subjects and in Subjects With Chronic Low Back Pain
Digital body charts are used to assess the pain experience in people with pain. People are asked to report their pain by shading a human body template on a digital tablet. The aim of this study is to investigate whether people with chronic low back pain, compared to healthy volunteers, consistently locate on a digital body chart all nociceptive stimuli induced in the lumbar region.
Healthy volunteers and people presenting chronic low back pain, will be recruited. A
standardized grid will be drawn over the participants' lumbar region. Circular electrodes,
connected to a constant current stimulator, will be applied at points on the grid. All
participants will be blinded to the electrode locations. Painful electrocutaneous stimuli
will be randomly delivered for each electrode. Participants will be instructed to draw with a
stylus pen on a digital body chart displayed on a tablet where they will perceive each
painful stimulation.
The body chart will be centred on a canvas 768x1024 pixels (pxl), and pain location will be
defined by X and Y coordinates. The consistency in reporting the location of each painful
stimulation will be described through coordinates.
In addition, only people presenting chronic low back pain will be asked to provide
information about their lifestyle, level of disability, actual pain and general pain,
assessment of kinesiophobia and health status.
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