Smart watch boosts CPAP use in sleep apnea patients

NCT ID NCT05530265

Symptom relief Sponsor: Seoul National University Hospital Source: ClinicalTrials.gov ↗

First seen Jun 26, 2026 · Last updated Jun 27, 2026 · Updated 1 time

Summary

This study tested whether wearing a smart watch and using a health app could help people with obstructive sleep apnea use their CPAP machine more regularly. 46 adults who either had never used CPAP or used it less than 4 hours a night were given a smart watch and app for 90 days. The goal was to see if the extra health tracking and feedback improved how often and how long they used the CPAP.

What this could mean

Our plain-language read of the trial. This is informational only, not medical advice or a prediction.

Active substance: smart watch and health app
What this could lead to: If it works, this could give doctors a simple, non-drug way to help people stick with CPAP therapy and get better sleep.
What could go wrong: This is a small, completed trial with only 46 participants, so results may not apply to everyone. The effect may be small or not last beyond 90 days.

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

46 people

The number who actually took part.

Started

Aug 2022

Finished

Apr 2025

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

22 to 75 years

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: * diagnosed with OSA (apnea-hyponea index \[AHI\])≥ 5 /h) by type 1 polysomnography * no prior use of PAP (CPAP or auto-adjusting PAP \[APAP\]), or no prior use of PAP within the previous 90 days in patients who had received PAP therapy, or current PAP users with average daily usage (all days) \< 4 hours within the previous 90 days Exclusion Criteria: * patients who refuse PAP therapy * patients who have used a smart watch (e.g., Galaxy Watch, Apple Watch, etc.) within the previous 90 days * patients with central sleep apnea or neuromuscular disease * patients receiving supplemental oxygen therapy due to underlying diseases including heart failure, stroke, chronic obstructive pulmonary disease, interstitial pulmonary disease, hypoventilation syndrome, or whose baseline oxygen saturation is less than 90% * patients with implanted cardiac pacemakers, defibrillators, or other electronic devices * patients who are inexperienced in using smartphones, apps, or smart watches * patients with an inability or unwillingness to provide informed consent

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Conditions

The condition(s) this trial relates to.

obstructive sleep apnea syndrome Treatment Adherence and Compliance

As listed by the trial registrant

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

Adherence, treatment Obstructive sleep apnea of adult Positive airway pressure Smart watch

Smart watch boosts CPAP use in sleep apnea patients

What the study statuses mean