NCT07394699

Brief Summary

The purpose of this study was to understand the effectiveness of intermittent hypoxia in the treatment of primary insomnia.

Trial Health

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Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Enrollment
30

participants targeted

Target at below P25 for not_applicable

Timeline
33mo left

Started Apr 2026

Typical duration for not_applicable

Status
not yet recruiting

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

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Study Timeline

Key milestones and dates

Study Progress4%
Apr 2026Dec 2028

First Submitted

Initial submission to the registry

May 5, 2024

Completed
1.8 years until next milestone

First Posted

Study publicly available on registry

February 6, 2026

Completed
2 months until next milestone

Study Start

First participant enrolled

April 1, 2026

Completed
2.8 years until next milestone

Primary Completion

Last participant's last visit for primary outcome

December 31, 2028

Expected
Same day until next milestone

Study Completion

Last participant's last visit for all outcomes

December 31, 2028

Last Updated

February 6, 2026

Status Verified

February 1, 2026

Enrollment Period

2.8 years

First QC Date

May 5, 2024

Last Update Submit

February 5, 2026

Conditions

Outcome Measures

Primary Outcomes (1)

  • The polysomnography between IH group and control group

    Before and after the experiment, polysomnography was performed on both the experimental and control groups to record sleep latency, total sleep duration, as well as the duration and proportion of each sleep stage.

    Baseline and Day 7

Secondary Outcomes (9)

  • Concentration of serum parameters between IH group and control group

    Baseline and Day 7

  • The score of Insomnia Severity Index(ISI)

    Baseline and Day 7

  • The score of the Flinders Fatigue Scale (FFS)

    Baseline and Day 7

  • The scale of Self-Rating Anxiety Scale (SAS)

    Baseline and Day 7

  • The score of Self-Rating Depression Scale (SDS)

    Baseline and Day 7

  • +4 more secondary outcomes

Study Arms (2)

IH group

ACTIVE COMPARATOR

Participants will receive 10 times intermittent hypoxia (oxygen concentration: 13%) intervention.

Other: Intermittent Hypoxia

Control group

SHAM COMPARATOR

Participants will receive 10 times sham-hypoxia (oxygen concentration: 21%) intervention in 5 days.

Other: Sham Intermittent Hypoxia

Interventions

The intermittent hypoxia protocol refers to four cycles of 5 minutes hypoxia inhaling interval by 5 minutes normoxia, which is performed twice a day (at least 6 hours apart) in 7 days.

IH group

The sham intermittent hypoxia protocol refers to 45 minutes normoxia inhaling, which is performed twice a day (at least 6 hours apart) in 7 days.

Control group

Eligibility Criteria

Age18 Years - 60 Years
Sexall
Healthy VolunteersNo
Age GroupsAdult (18-64)

You may qualify if:

  • Subjects are diagnosed with primary insomnia between 18 and 60 years old,gender is not limited.
  • Patients who are not taking sedative-hypnotic drugs or have stopped taking drugs for more than 2 weeks.
  • Residing in the plains all year round and not having been above 1500 meters above sea level in the past 30 days.
  • Quiet state SaO2 ≥ 90%, cerebral oxygen saturation 58-82%, heart rate 60-100 beats/min, blood pressure 90-140/60-90 mmHg, respiratory rate 16-20 times/min.
  • No functional drinks, caffeine-containing beverages, or sleep-disturbing medications during the study period.

You may not qualify if:

  • Stroke onset in the past 3 months, other severe neurological diseases, such as epilepsy, intracranial infectious diseases or demyelination.
  • Uncontrolled hypertension (systolic blood pressure ≥200mmHg) with antihypertensive drugs before enrollment, other cardiovascular diseases.
  • History of pulmonary, hepatic, dermatologic, or hematologic diseases.
  • History of substance abuse.
  • Pregnancy, Severe sleep apnea and neurological disorders.

Contact the study team to confirm eligibility.

Sponsors & Collaborators

MeSH Terms

Conditions

Sleep Initiation and Maintenance Disorders

Condition Hierarchy (Ancestors)

Sleep Disorders, IntrinsicDyssomniasSleep Wake DisordersNervous System DiseasesMental Disorders

Central Study Contacts

Study Design

Study Type
interventional
Phase
not applicable
Allocation
RANDOMIZED
Masking
TRIPLE
Who Masked
PARTICIPANT, INVESTIGATOR, OUTCOMES ASSESSOR
Purpose
TREATMENT
Intervention Model
PARALLEL
Sponsor Type
OTHER
Responsible Party
PRINCIPAL INVESTIGATOR
PI Title
Principal Investigator

Study Record Dates

First Submitted

May 5, 2024

First Posted

February 6, 2026

Study Start

April 1, 2026

Primary Completion (Estimated)

December 31, 2028

Study Completion (Estimated)

December 31, 2028

Last Updated

February 6, 2026

Record last verified: 2026-02