Do Emotions and Pain Combined Affect Mechanical Pain Thresholds and Other Pain-related Variables in Individuals with Chronic Pain?

NCT ID: NCT06851208

Last Updated: 2025-02-28

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

NOT_YET_RECRUITING

Clinical Phase

NA

Total Enrollment

180 participants

Study Classification

INTERVENTIONAL

Study Start Date

2026-03-01

Study Completion Date

2026-06-30

Brief Summary

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The purpose of this study is to investigate if different emotional states could influence mechanical pain thresholds and other pain - related variables such as pain tolerance, pain intensity and pain - related negative affect in individuals with chronic pain.

Detailed Description

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Participants with chronic pain will be randomized into 4 different groups watching different short video-clips (2.20 min), while at the same time experience short-lasting, experimentally induced pain. The negative emotions group will watch an uncomfortable short video containing violence and blood, the positive emotions group will watch a video containing a stand-up comedy show, the neutral emotions group will watch a video about how to paint a house, and the control group will just wait for 2.20 min, without any instructions about what to think about. Pressure pain thresholds, pain tolerance, pain intensity and pain-related negative affect will be measured with an algometer before and after the video-clip combined with experimental pain interventions.

Conditions

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Pain Thresholds Pain Intensity

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

PARALLEL

Within-subjects design
Primary Study Purpose

BASIC_SCIENCE

Blinding Strategy

NONE

Study Groups

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Experimental: Negative emotion, positive emotion, neutral emotion, control with experimental pain

Arm Description: The intervention includes either a negatively emotionally valenced video, a positively emotionally valenced video, a neutrally emotionally valenced video and experimental pain from the cold pressor test that are simultaneosly applied.

Group Type EXPERIMENTAL

Emotional intervention

Intervention Type OTHER

Emotional intervention Description: The participant will watch a short video-clip with negative emotional content while simultaneously experience experimentally induced pain.

Emotional intervention

Intervention Type OTHER

Description: The participant will watch a short video-clip with positive emotional content while simultaneously experience experimentally induced pain.

Emotional intervention

Intervention Type OTHER

Description: The participant will watch a short video-clip with neutral emotional content while simultaneously experience experimentally induced pain.

Interventions

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Emotional intervention

Emotional intervention Description: The participant will watch a short video-clip with negative emotional content while simultaneously experience experimentally induced pain.

Intervention Type OTHER

Emotional intervention

Description: The participant will watch a short video-clip with positive emotional content while simultaneously experience experimentally induced pain.

Intervention Type OTHER

Emotional intervention

Description: The participant will watch a short video-clip with neutral emotional content while simultaneously experience experimentally induced pain.

Intervention Type OTHER

Eligibility Criteria

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Inclusion Criteria

* Above 18 years of age
* Fluent in Swedish
* Persistent chronic pain with duration \> 6 months

Exclusion Criteria

\- Known neurological disease
Minimum Eligible Age

19 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

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Linnaeus University

OTHER

Sponsor Role lead

Responsible Party

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Helena Gunnarsson

Dr

Responsibility Role PRINCIPAL_INVESTIGATOR

Central Contacts

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Helena Gunnarsson, Dr

Role: CONTACT

+46708432509

Other Identifiers

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2024-07781-01 ethic approval

Identifier Type: -

Identifier Source: org_study_id

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