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The purpose of this study is to investigate if different emotional states could influence mechanical pain thresholds in individuals with chronic pain.
Participants will be randomized into 4 different groups watching different short video-clips (2.20 min). 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 will be measured with an algometer before and after the video-clips.
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| Negative emotional condition | Experimental | The participant will watch a short video-clip with negative emotional content. |
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| Positive emotional condition | Experimental | The participant will watch a short video-clip with positive emotional content. |
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| Neutral emotional condition | Sham Comparator | The participant will watch a short video-clip with neutral emotional content. |
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| No emotional condition | Sham Comparator | The participant will wait for 2.30 minutes without any instructions about how to engage their thoughts. |
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| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| Emotional intervention | Other | Negative emotional intervention |
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| Measure | Description | Time Frame |
|---|---|---|
| Pressure pain thresholds will be measured in kPa | Pressure pain thresholds will be measured in kPa using a handheld algometer (Somedic AB). | The measurement takes place at the intervention session. First a baseline measurement is conducted, then comes the intervention and then the intervention measurement takes place. |
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Inclusion criteria
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| Name | Role | Phone | Extension | |
|---|---|---|---|---|
| Helena Gunnarsson, Dr | Contact | +46708432509 | helena.gunnarsson@lnu.se |
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| ID | Term |
|---|---|
| D010146 | Pain |
| ID | Term |
|---|---|
| D009461 | Neurologic Manifestations |
| D012816 | Signs and Symptoms |
| D013568 | Pathological Conditions, Signs and Symptoms |
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| Emotional intervention | Other | Positive emotional intervention |
|