About this trial
The goal of this observational study is to learn about the relationship between environmental structural racism and discrimination and chronic pain risk in Native American adults. The main questions it aims to answer are:
1. How does environmental structural racism and discrimination affect chronic pain-promoting mechanisms in Native Americans? 2. What psychosocial factors buffer the negative effects of environmental structural racism and discrimination on chronic pain-promoting mechanisms?
Eligibility criteria
This trial accepts healthy volunteersQualifiers
Self-identify as Native American/American Indian
Disqualifiers
<18 years of age
Self-reported history of cardiovascular, neuroendocrine, musculoskeletal, or neurological disorders
Surrent chronic pain, defined as persistent, bothersome pain on more days than not for at least 3 months)
Self-reported current substance dependence
Trial population
Participants will be adults who self-identify as Native American/American Indian.
Trial design
Cohort
Cross-sectional
Treatments tested in this trial
Not listed
Trial groups
Trial outcomes
Primary outcomes
Pain inhibition
Pain inhibition will be assessed using a conditioned pain modulation task with cold water as the conditioning stimulus and electric stimulations as the test stimulus.
Inhibition of pain-related spinal reflex
Pain-related spinal reflex inhibition assessed from electromyogram will be assessed using a conditioned pain modulation task with cold water as the conditioning stimulus and electric stimulations as the test stimulus.
Inhibition of pain-evoked cortical potentials
Inhibition of pain-evoked cortical potentials from electroencephalography will be assessed using a conditioned pain modulation task with cold water as the conditioning stimulus and electric stimulations as the test stimulus.
Psychological stress
A single latent variable measuring psychological stress will be created using principal components analysis to combine scores from three self-report questionnaires: the Perceived Stress Scale (PSS), the Global Distress Index of the Symptom Checklist-90-Revised (SCL-90-R), and the PTSD Checklist-Civilian (PCL-C).
Secondary outcomes
Temporal summation of pain
Temporal summation of pain will be measured by assessing the change in a participant's pain ratings in response identical noxious stimuli delivered in rapid succession.
Temporal summation of spinal nociception
Temporal summation of spinal nociception will be measured by assessing the change in a participant's pain-related reflex magnitude (assessed from electromyography) in response identical noxious stimuli delivered in rapid succession.
Pain tolerance
Pain tolerance will be measured with ischemic and cold pain tasks. Participants will continuously rate their pain in response to painful tonic stimuli, and pain tolerance will be quantified as the time (in seconds) that it takes for participants to report that they can no longer tolerate the pain.
Sponsors and contacts
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University of Oklahoma
Lead sponsor
Oklahoma State University
Collaborator
University of Tulsa
Collaborator