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CompletedNCT06339853Updated Apr 1, 2024

Study of Efficacy of Digital Cognitive Behavioral Therapy With Wearable Device for Insomnia

An interventional study of WELT-IP with wearable devices (Apple/galaxy watch. Oura ring) in Insomnia, sponsored by Yonsei University. Completed at 1 site in South Korea. Open to participants aged 19 Years to 65 Years. Per ClinicalTrials.gov, last updated 2024-04-01.

Sponsored by Yonsei University · Not applicable, Interventional, and Treatment

From the registry’s dates

  • Registered 6 months after the study started (first participant enrolled Sep 2023, registered Mar 2024).
Phase
Not applicable
Study type
Interventional
Enrollment
30
Allocation
Not applicable
Ages
19 Years to 65 Years
Sex
All
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Study summary

The purpose of the study was to examine safety and efficacy of cognitive behavioral therapy (CBT)-based wearable integrated digital therapeutics for insomnia patients

Read the detailed description

The investigators intend to conduct a single-arm clinical trial. Following voluntary consent during the screening visit, participants will undergo screening procedures. The screening process will proceed step by step, evaluating selection/exclusion criteria through assessments such as the Mini International Neuropsychiatric Interview (MINI), Columbia Suicide Severity Rating Scale (C-SSRS), etc. Participants who meet the selection criteria and do not meet the exclusion criteria will use the DTx app for 8 weeks. Surveys conducted after app installation (Insomnia Severity Index (ISI), Patient Health Questionnaire-9 (PHQ-9), Generalized Anxiety Disorder 7-item Scale (GAD-7), and a sleep environment questionnaire) will serve as the baseline.

During the clinical trial period, sleep diaries and compliance (lesson completion rate) (applicable only to the experimental group) will be collected through the app. Sleep diaries will be used to evaluate sleep metrics such as sleep efficiency (SE), sleep onset latency (SOL), wake after sleep onset (WASO), etc.

For the experimental group, assessments as per the protocol will be conducted at baseline (Visit 1), and safety (adverse events) evaluation and termination of app usage will occur at 9 weeks (Visit 2).

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Conditions studied

03

In context

Sleep Initiation and Maintenance Disorders

1,925 studies on the registry are indexed under Sleep Initiation and Maintenance Disorders; 612 are open to participants now.

This study's enrollment of 30 is below the median of 72 across 1,689 interventional studies indexed under Sleep Initiation and Maintenance Disorders.

Browse Sleep Initiation and Maintenance Disorders studies →

Lead sponsor

Yonsei University is the lead sponsor of 1,410 studies on the registry; 235 are open to participants now.

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

04

Who can participate

Ages eligible
19 Years to 65 Years
Sexes eligible
All
Accepts healthy volunteers
No

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

  1. Individuals aged 19 to 65 years old
  2. DSM-5 insomnia disorder patient
  3. ISI ≥11
  4. Capable of using mobile device and application

Exclusion criteria

Exclusion Criteria:

  1. currently on non-pharmacological treatment for insomnia (ex. CBT-I, light therapy, oriental therapy for insomnia)
  2. sleep disorders diagnosis other than insomnia (ex. Obstructive sleep apnea, sleep behavior problem, restless leg syndrome)
  3. progressive and active medical conditions
  4. received continuous psychotherapy such as CBT, motivational enhancement therapy, psychotherapy, and psychoanalysis in the past 3 months
  5. major psychiatric illness as assessed through MINI
  6. suicide risk as assessed through C-SSRS
  7. having occupational risk due to sleep restriction
  8. shift workers
  9. PHQ-9 of 20 or above
  10. Individuals who have actually slept less than an average of 5 hours per night over the past month
  11. Pregnant women or individuals planning pregnancy during the clinical trial period
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Study design

Phase
Not applicable
Primary purpose
Treatment
Allocation
Not applicable
Intervention model
Single group
Masking
None (open label)
Enrollment
30 participants (actual)

Study arms

  • Experimental
    WELT-IP

    Eligible subjects were able to access WELT-IP (an investigational digital therapeutic) on a mobile device (iOS and Android) as scheduled to receive cognitive behavioral therapy for insomnia (CBT-I). To collect sleep and environmental data, participants will wear the wearable devices, either (1) Apple Watch (Apple Watch Series 8 41mm (GPS)) or Galaxy Watch 5 40mm (Model: SM-R900NZAAKOO), and (2) Oura Ring (Model: Heritage), during the WELT-IP treatment period.

    Device: WELT-IP with wearable devices (Apple/galaxy watch. Oura ring)

Interventions

  • DeviceWELT-IP with wearable devices (Apple/galaxy watch. Oura ring)

    WELT-IP (an investigational digital therapeutic) is an CBT-I based intervention designed to treat insomnia, conducted in 6 sessions. It is a comprehensive program delivering sleep restriction, stimulation control, muscle relaxation, cognitive treatment, and sleep hygiene education. Main features are sleep diary, sleep reports, daily lessons of CBT-I, muscle relaxation techniques, and cognitive intervention through chatbot. By using WELT-IP simultaneously with wearing an Apple Watch/Galaxy Watch and Oura Ring, sleep and environmental data can be collected.

06

What researchers measure

Primary outcomes

  1. Change from baseline to week 9 (post-treatment) of ISI

    Change from baseline to week 9 (post-treatment) of ISI. ISI has 7 questions. Total score ranges from 0 to 28, where higher scores indicate more acute symptoms of insomnia.

    Time frame: 9 weeks

Secondary outcomes

  1. Secondary Outcome - Changes from baseline to week 9 of SE

    Change from baseline to week 9 (post-treatment) of SE. Sleep efficiency is calculated as percentage of total sleep time/time in bed.

    Time frame: 9 weeks

  2. Changes from baseline to week 9 of SOL.

    Change from baseline to week 9 (post-treatment) of SOL. Sleep onset latency is evaluated as the time it takes a person to fall asleep after going to bed.

    Time frame: 9 weeks

  3. Changes from baseline to week 9 of WASO.

    Change from baseline to week 9 (post-treatment) of WASO. WASO is calculated as the total number of minutes that a person is awake after initially falling asleep.

    Time frame: 9 weeks

  4. Changes from baseline to week 9 of PHQ-9.

    Change from baseline to week 9 (post-treatment) of PHQ-9. PHQ-9 has nine questions. Total score ranges from 0 to 27, where higher scores indicate more acute symptoms of depression.

    Time frame: 9 weeks

  5. Changes from baseline to week 9 of GAD-7.

    Change from baseline to week 9 (post-treatment) of GAD-7. GAD-7 has seven questions. Total score ranges from 0 to 21, where higher scores indicate more acute symptoms of anxiety.

    Time frame: 9 weeks

  6. Changes from baseline to week 9 of compliance.

    Compliance (completion rate or lessons) Compliance is evaluated as completion rate of lessons.

    Time frame: 9 weeks

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Study locations

1 site
  • Department of Psychiatry, Severance Hospital
    Seoul, 120-752, South Korea
08

References and documents

Publications

  • Moon DU, Lee Y, Lutt A, Lee S, Lee E. Adjunctive smart ring monitoring during digital cognitive behavioral therapy for insomnia. Sci Rep. 2025 Oct 30;15(1):37934. doi: 10.1038/s41598-025-24312-0. PubMed 41168443 ↗

Individual participant data

Plan to share: No

09

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Apr 1, 2024, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT06339853
Lead sponsor
Yonsei University
Responsible party
Sponsor
First posted
Apr 1, 2024
Start date
Sep 7, 2023
Primary completion
Feb 29, 2024
Completion
Feb 29, 2024
Last update
Apr 1, 2024

Oversight

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

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This study is completed, as verified in Mar 2024. You cannot join it, but the record below documents what was studied.

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