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Sleepless night worsens COPD breathing? new study investigates

NCT ID NCT04997200

Knowledge-focused Sponsor: Skane University Hospital Source: ClinicalTrials.gov ↗

What the study statuses mean

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Recruitment status, easiest to join first

Recruiting now
This trial is taking on new participants right now.
Not yet recruiting
Registered, but not yet taking participants.
By invitation only
Not open to general applications. Only people the study team invites can take part.
Paused
Paused for now. It may or may not start again.
Ongoing
Running, but no longer taking on new participants.
Completed This study
The trial has finished. Results may not be published yet.
Stopped early
Stopped early, before it reached the end. That can be for many reasons, including safety.
Cancelled
Cancelled before anyone took part.

Expanded access (not trials)

Expanded access
Not a trial. This treatment can be requested outside a study, case by case, for people who qualify.
Expanded access (paused)
Not a trial. The treatment can normally be requested outside a study, but is unavailable right now.
Expanded access (ended)
Not a trial. The treatment could once be requested outside a study, but no longer can.
Approved
The treatment has been approved, so it is available normally rather than through this programme.

When the status isn't known

Details not published
The full record has not been published yet, so there is little to show here.
Status unknown
This status has not been confirmed recently, so it may be out of date.

First seen Jun 27, 2026 · Last updated Jun 27, 2026

Summary

This study looked at how one night of no sleep affects shortness of breath and exercise ability in 20 people with COPD. Participants did exercise tests after a normal night and after a sleepless night to compare. The goal was to understand if sleep loss makes breathing harder during activity.

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

20 people

The number who actually took part.

Started

Sep 2021

Finished

Oct 2024

Lead sponsor

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

18 years and older

Sex

Anyone

Healthy volunteers

Not accepted

This study is not open to healthy volunteers. The entry requirements below say who it is open to.

Show 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: (All required) * Age 18 years or older * COPD diagnosed by physician in accordance with Global Initiative For Chronic Obstructive Lung Disease (GOLD) guidelines (GOLD 2021), with a spirometric ratio of the forced expired volume in one second (FEV1) / forced vital capacity (FVC) \< 0.7 and a FEV1 \< 80% of predicted post bronchodilator at baseline. * Self-reported average sleep time of six hours or longer during a normal night. * No regular treatment with sleep medication or anxiolytics. * Able to cycle * Able to talk and write Swedish well enough to participate in the study procedures, as judged by the Investigator. Exclusion Criteria: * Resting peripheral oxygen saturation (SpO2) \< 92% * Night shift worker * Hospitalization or clinical instability during the last four weeks * Treatment with supplementary oxygen at rest or during exercise * Sleep disturbance, defined as a Pittsburgh Sleep Quality Index \>5 at baseline * Contraindication to exercise testing in accordance with clinical practice guidelines (ATS/ACCP Statement on cardiopulmonary exercise testing. Am J Respir Crit Care Med 2003; 167:211-277) * Expected survival shorter than six months as judged by the Investigator.

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Conditions

The condition(s) this trial relates to.

chronic obstructive pulmonary disease COPD, severe early onset Dyspnea Respiration Disorders respiratory system disorder Signs and Symptoms, Respiratory

As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

COPD

Contacts and locations

Locations

  • Blekinge Tekniska Högskola (BTH)

    Karlskrona, Blekinge County, 37179, Sweden

  • Department of Clinical Physiology, Blekinge Hospital

    Karlskrona, Blekinge County, SE-37185, Sweden

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