Sleepless nights may amplify pain, study suggests
NCT ID NCT06336109
First seen Jun 27, 2026 · Last updated Jun 27, 2026
Summary
This study looked at how disrupted sleep changes the way healthy adults feel pain and move their joints. Thirty participants received painful injections in the knee and shoulder after a night of fragmented sleep. Researchers measured pain intensity and movement patterns to understand the link between sleep loss and pain sensitivity.
What this could mean
Our plain-language read of the trial. This is informational only, not medical advice or a prediction.
- Active substance
- Hypertonic saline injection
- What this could lead to
- If successful, this could help explain why poor sleep makes pain worse, pointing toward better pain management strategies.
- What could go wrong
- This is a small, early-stage study in healthy volunteers, not patients. Results may not apply to real-world chronic pain conditions.
This is an AI summary of the original study and may miss details. Read our disclaimer.
Study facts
What this study's own registry entry says, in plain language.
- Phase
-
Not a phased trial
Phase numbers describe drug development. The registry uses this when they do not apply, as it does for trials of devices, procedures or behaviour changes, and for observational studies.
- Participants
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30 people
The number who actually took part.
- Started
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Jan 2024
- Finished
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Sep 2025
- Lead sponsor
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Other sponsor
The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.
Who can take part
This study's own entry requirements. Only the study team can say for certain whether you qualify.
- Ages
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18 to 45 years
- Sex
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Anyone
- Healthy volunteers
-
Accepted
You do not need to have the condition being studied to take part.
Show the full entry requirements Hide the full entry requirements
Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.
Inclusion Criteria: * Healthy men and women aged 18-45 years * Must have a smartphone available during the experiment Exclusion Criteria: * Pregnancy * Drug addiction, defined as the use of cannabis, opioids, or other drugs * Previous or current neurologic or musculoskeletal illnesses * Current pain * Lack of ability to cooperate
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Conditions
The condition(s) this trial relates to.
As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
Contacts and locations
Locations
-
Aalborg University
Aalborg, North Denmark, 9000, Denmark
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