Wearable sleep trackers reveal how Weight-Loss surgery changes rest
NCT ID NCT07693491
First seen Jul 09, 2026 · Last updated Jul 10, 2026 · Updated 1 time
Summary
This study tracks sleep quality in adults with obesity before and one year after metabolic surgery (gastric bypass or sleeve gastrectomy). Participants wear two sleep-monitoring devices for five nights at home and fill out sleep questionnaires and diaries. The goal is to see whether surgery leads to lasting improvements in sleep, beyond what short lab tests can show.
What this could mean
Our plain-language read of the trial. This is informational only, not medical advice or a prediction.
- Active substance
- metabolic surgery (gastric bypass or sleeve gastrectomy)
- What this could lead to
- If sleep quality improves significantly after surgery, this could point toward better ways to manage sleep problems in people with obesity.
- What could go wrong
- This is an observational study with only 50 participants, so results may not apply to everyone. The sleep monitors are not medical devices and may not capture all sleep issues accurately.
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.
- Participants
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About 50 people
The number the study aims to enrol. It can still change while the study runs.
- Expected to start
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Sep 2026
An estimate. Start dates often move.
- Expected to finish
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Sep 2029
An estimate. End dates often move.
- 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.
Who is studied
Adults with obesity scheduled for primary metabolic surgery at Catharina Hospital Eindhoven, the Netherlands. Eligible participants will undergo Roux-en-Y gastric bypass, sleeve gastrectomy, or, if performed within standard care, one-anastomosis gastric bypass. Participants will complete home-based sleep monitoring before surgery and approximately 1 year after surgery.
- Ages
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18 years and older
- Sex
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Anyone
- Healthy volunteers
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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 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: * Age 18 years or older. * Body mass index (BMI) of 40 kg/m² or higher, or BMI of 35 kg/m² or higher with obesity-related comorbidities. * Scheduled for primary metabolic surgery, including Roux-en-Y gastric bypass, sleeve gastrectomy, or, if performed within standard care, one-anastomosis gastric bypass. * Willing and able to wear wearable devices for 5 consecutive nights during both study measurement periods. * Willing and able to complete sleep questionnaires and a daily sleep diary. * No shift-based or irregular night-shift work schedule that could interfere with sleep measurements. * Able and willing to provide written informed consent. Exclusion Criteria: * Revisional bariatric procedure. * Diagnosed obstructive sleep apnea currently treated with continuous positive airway pressure (CPAP) or bilevel positive airway pressure (BiPAP). * High clinical suspicion of obstructive sleep apnea during the standard preoperative work-up requiring further diagnostic evaluation or treatment. * Chronic preoperative use of medications that may significantly alter sleep quality, including benzodiazepines, zolpidem, or other sedatives or sleep aids. * Unable to complete the study procedures or comply with wearable device use, questionnaires, or sleep diary completion.
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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.
How to take part
Only the study team decides who joins. These are the ways to reach them.
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The places running it
1 site. The list below names each one and where it is.
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The official record
ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.
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A doctor treating you
A doctor who knows your case can contact a study site on your behalf, and can tell you whether this study is worth pursuing at all.
Contacts and locations
Locations
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Catharina ziekenhuis Eindhoven
Eindhoven, North Brabant, 5623EJ, Netherlands
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