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Clinical Trial Summary

This pilot randomized clinical trial (RCT) will randomize adults with chronic pain to one, 20-minute session of either: Brief Mindfulness-Based Intervention (BMBI) mindfulness training or nutrition education (Control). Following the session, participants will be encouraged to practice a technique associated with their intervention (i.e., practicing mindfulness technique in BMBI, preparing healthy meals in Control) 20 minutes/day for one week at home. Quantitative sensory testing (with cold pressor and algometer) will be conducted before and after the session, and self-reported outcome assessments will be conducted before and after the session and at 1-week follow-up.


Clinical Trial Description

Participants. To gather pilot data on the effects of BMBI, the investigators will aim to enroll up to 60 participants (up to 30 in each condition). Participants will be adults with chronic non-cancer pain (daily pain for at least 3 months). Outcomes. Outcome measures were selected based on existing recommendations, including IMMPACT guidelines, for efficacy trials in chronic pain. - Aim #1: Test the effects of BMBI, relative to control, on central pain processing using quantitative sensory testing. Quantitative sensory testing (cold pressor test and pressure algometer) will be used to characterize pain processing: pain threshold (i.e., when pain is first detected), pain tolerance (i.e., the duration of time that pain can be tolerated), and pain severity (i.e., intensity of pain). In the cold pressor test, a participant will be asked to place his or her hand in an ice bath until the pain is too great to remain in the water. Consistent with past research, a 15 liter refrigerated circulator (Polyscience MX15R-30-A11B) with water temperature set as low as 1°C will be used. In the pressure algometer test, the algometer will be used to apply pressure to the skin until the pain can no longer be tolerated. The investigators will utilize a device widely used in alogmeter pain research (Wagnder Force One Alogmeter FIPX). - Aim #2: Test the immediate effects of BMBI, relative to control, on state self-report measures of pain, negative affect, and decentering. State self-report outcomes include: state decentering (7-item Decentering Subscale of the Toronto Mindfulness Scale), state pain intensity (1 item from the Brief Pain Inventory), state pain unpleasantness (1-item rated on 0-10 scale), state anxiety (1-item rated on 0-10 scale), state distress (1-item rated on 0-10 scale), state relaxation (1-item rated on 0-10 scale), and outcome expectancies (5-item Outcome Expectancies Questionnaire). - Aim #3: Test longer-term effects of BMBI, relative to control, on trait self-report measures of pain, negative affect, trait mindfulness, and well-being. Trait self-report outcomes include: pain intensity and interference (9-item Brief Pain Inventory), anxiety and depression (14-item Hospital Anxiety and Depression Scale), trait mindfulness (15-item Mindful Attention Awareness Scale), psychological well-being (10-item Schwartz Outcome Scale), and home practice over the 4-week follow-up period (TLFB method). Procedure. Participants will be recruited primarily via flyers and postings in newspapers and on the Internet. Prospective participants will be screened by phone (about 30 minutes). Provisionally eligible participants will be asked to attend a 1-hour appointment, which will begin with informed consent procedures (5-10 minutes) and a pre-intervention assessment (about 20 minutes; includes demographics questionnaire, self-report outcome measures, and quantitative sensory testing). Eligible participants will be randomized to a condition, complete a 20-minute session of either BMBI or Control, and undergo a postintervention assessment (about 10 minutes; includes self-report outcome measures and quantitative sensory testing). Following the assessment, participants will be encouraged to practice the technique associated with their intervention (i.e., practicing mindfulness technique in BMBI, preparing healthy meals in Control) 20 minutes/day for 1 week at home and to track their practice and opioid use during the follow-up period; the follow-up assessments will be conducted over the phone by a research assistant and include the self-report outcome measures (no quantitative sensory testing). All study procedures are anticipated to last 2 hours and 30 minutes (30 minutes for screening, 1 hour for in-person appointment, and 30 minutes for each follow-up assessment). Interventions: The BMBI is be based on a BMBI which demonstrated analgesic effects in a previous study. Relative to full-length interventions, the investigators will employ a brief intervention (i.e., one, 20-minute session) that could be delivered in routine clinical care, e.g., in primary care, and that could overcome cost and time/effort barriers associated with longer treatments. The 20-minute BMBI session will include education on the foundational concepts of mindfulness and its relevance to chronic pain (5 minutes) and a guided mindfulness practice involving focused attention on the breath and monitoring of thoughts, feelings, and body sensations (15 minutes). BMBI participants will be encouraged to practice the taught mindfulness technique at home at least 20 minutes/day for 1 week (a handout and link to an online guided mindfulness practice will be provided). The Control intervention will involve nutrition education, adapted from an existing manual of cognitive-behavioral therapy for opioid-treated chronic pain. Control intervention protocol will match the BMBI in terms of time / structure to control for the non-specific, non-mindfulness effects of BMBI. The 20-minute Control session will include education on the relationship between diet and pain (10 minutes) and recommendations for a healthy diet (10 minutes). Control participants will be encouraged to prepare healthy meals at home at least 20 minutes/day for 1 week (a handout and link to online resources will be provided). ;


Study Design


Related Conditions & MeSH terms


NCT number NCT03563911
Study type Interventional
Source University of Wisconsin, Madison
Contact
Status Withdrawn
Phase N/A
Start date December 12, 2018
Completion date April 1, 2020

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