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CompletedNCT05530265Updated Apr 24, 2026

Effect of Smart Watch and App on PAP Adherence in OSA (Watch-OSA)

An interventional study of the smart watch and Samsung Health app in Obstructive Sleep Apnea of Adult, Positive Airway Pressure and Adherence, Treatment, sponsored by Seoul National University Hospital. Completed at 1 site in South Korea. Open to participants aged 22 Years to 75 Years. Per ClinicalTrials.gov, last updated 2026-04-24.

Sponsored by Seoul National University Hospital · Not applicable, Interventional, and Treatment

Phase
Not applicable
Study type
Interventional
Enrollment
46
Allocation
Randomized
Ages
22 Years to 75 Years
Sex
All
01

Study summary

Continuous positive airway pressure (CPAP) is highly effective in treating obstructive sleep apnea (OSA). However, this treatment modality relies heavily on patient adherence, and poor adherence to the treatment limits its effectiveness in treating OSA. Strategies to augment adherence are needed in the management of OSA.

The smart watch and linked app provide various health information, including sleep, snoring or oxygen saturation during sleep, exercise, blood pressure, and electrocardiogram. The smart watch and linked app could potentially improve adherence to positive airway pressure (PAP) treatment.

This randomized controlled trial (RCT) aimed to examine whether the use of smart watch and app can increase PAP adherence in patients with OSA.

02

Conditions studied

  • Obstructive Sleep Apnea of Adult
  • Positive Airway Pressure
  • Adherence, Treatment
  • Smart Watch
03

In context

Treatment Adherence and Compliance

114 studies on the registry are indexed under Treatment Adherence and Compliance; 60 are open to participants now.

This study's enrollment of 46 is below the median of 84 across 97 interventional studies indexed under Treatment Adherence and Compliance.

Browse Treatment Adherence and Compliance studies →

Lead sponsor

Seoul National University Hospital is the lead sponsor of 1,860 studies on the registry; 275 are open to participants now.

Of its 12 completed or terminated interventional studies of FDA-regulated products, 2 (17%) have results posted.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
22 Years to 75 Years
Sexes eligible
All
Accepts healthy volunteers
No

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

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
05

Study design

Phase
Not applicable
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Parallel assignment
Masking
None (open label)
Enrollment
46 participants (actual)

Study arms

  • Experimental
    Smart watch group

    The user of the smart watch and Samsung Health app

    Device: the smart watch and Samsung Health app

  • No intervention
    Usual care

    No use of both the smart watch and Samsung Health app

Interventions

  • Devicethe smart watch and Samsung Health app

    Use the smart watch (Galaxy Watch 4, Samsung Electronics Co., Ltd., Korea) and the Samsung Health app (Samsung Electronics Co., Ltd., Korea) for 90 days of positive airway pressure treatment

06

What researchers measure

Primary outcomes

  1. Average daily usage of PAP (all days)

    Average daily usage of PAP (all days) in 90 days

    Time frame: 90 days

Secondary outcomes

  1. Average daily usage of PAP (days used)

    Average daily usage of PAP (days used) in 90 days

    Time frame: 90 days

  2. Percentage of days using PAP

    Percentage of days using PAP

    Time frame: 90 days

  3. Percentage of days using PAP ≥ 4 hours

    Percentage of days using PAP ≥ 4 hours

    Time frame: 90 days

  4. Percentage of patients meeting the National Health Insurance Service adherence criteria

    The National Health Insurance Service adherence criteria: ≥ 4 hours of use on ≥ 70% of days over 30 consecutive days during the 90 days of PAP therapy

    Time frame: 90 days

  5. Changes of the scores of Epworth Sleepiness Scale

    Changes of the scores of Epworth Sleepiness Scale

    Time frame: 90 days

  6. Changes of the scores of Pittsburgh Sleep Quality Index

    Changes of the scores of Pittsburgh Sleep Quality Index (an overall score ranging from 0 to 21, where lower scores denote a healthier sleep quality)

    Time frame: 90 days

  7. Patient satisfaction with PAP therapy

    Patient satisfaction with PAP therapy

    Time frame: 90 days

07

Study locations

1 site
  • Seoul National University Hospital
    Seoul, 03080, South Korea
08

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Apr 24, 2026, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
09

Registry details

Key details

Study ID
NCT05530265
Lead sponsor
Seoul National University Hospital
Responsible party
Jaeyoung Cho (Associate Professor, Seoul National University Hospital) — Principal investigator
First posted
Sep 7, 2022
Start date
Aug 22, 2022
Primary completion
Apr 14, 2025
Completion
Apr 14, 2025
Last update
Apr 24, 2026

Study contacts

Jaeyoung Cho, M.D., Ph.D.
principal investigator · Seoul National University Hospital

Oversight

FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is completed, as verified in Apr 2026. You cannot join it, but the record below documents what was studied.

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