NCT07156383 Restorative Effects of Sleep on Everyday Health and Wellbeing: A Treatment Study
| NCT ID | NCT07156383 |
| Status | Recruiting |
| Phase | — |
| Sponsor | University of Notre Dame |
| Condition | Chronic Insomnia |
| Study Type | INTERVENTIONAL |
| Enrollment | 115 participants |
| Start Date | 2025-09-29 |
| Primary Completion | 2027-08-31 |
Eligibility & Interventions
Eligibility Fast-Check
Enter your details for a quick preliminary check. This does not replace medical advice.
What to Expect as a Participant
You will actively receive the study intervention — which may be a drug, biologic, device, or procedure.
This trial targets 115 participants in total. It began in 2025-09-29 with a primary completion date of 2027-08-31.
⚠ This information is for research awareness only. Always consult your physician before joining any clinical trial. Participation is voluntary and you may withdraw at any time.
Brief Summary
The purpose of this study is to evaluate the mechanisms through which Cognitive Behavioral Therapy for Insomnia (CBT-I) leads to improvements in sleep and sleep-related daytime outcomes, specifically as it relates to cortisol and the hypothalamic-pituitary-adrenal (HPA) axis, the body's primary stress response system. The primary research aims are: 1) To determine whether changes in cortisol functioning are related to improvements in sleep consolidation (4-week CBT-I), sleep duration (10-week CBT-I) or both, AND 2) to examine whether these improvements are more pronounced among individuals with insomnia and short sleep duration (compared to insomnia with 'normal' sleep duration).This study will recruit individuals with chronic insomnia: half with reported short sleep duration (less than 6 hours of sleep on an average night) and half with reported non-short sleep duration (6 or more hours per night). Participants will complete an in-lab assessment on four different occasions. During the first visit, they will confirm eligibility, complete an online survey, complete an in-lab stress task (with saliva samples), and provide a hair sample to measure cortisol (a hormone). They will then be sent home with a home sleep test as a final eligibility check (to rule out sleep disorders other than insomnia), an actigraphy watch to measure their sleep, and collection tubes to provide saliva samples to measure cortisol. We will then track the participants' sleep using online daily diaries and actigraphy for four week. Following the 4-week baseline period, participants will come in for a second in-lab visit (same procedures as the first visit) and then be randomized to receive either four or ten weeks of Cognitive Behavioral Therapy for Insomnia (CBT-I). CBT-I is a empirically supported behavioral treatment for insomnia and the first-line treatment for chronic insomnia. Sleep patterns and insomnia symptoms will continue to be monitored via diaries during the intervention phase. The third visit will take place once the participant has completed the intervention and the fourth visit will occur three months following the third visit (3 months post-treatment). The 3rd and 4th visits will again replicate the same procedures conducted during the initial lab visit.
Eligibility Criteria
Inclusion Criteria: * At least 18-years-old * Speaks English * Meets DSM-5 criteria for Insomnia Disorder, determined through initial screener than verified during brief clinical interview (at intake) Exclusion Criteria: * Sleep disorders other than Insomnia * Endocrine disorders * Extreme sleep schedule (i.e. shift workers) * Currently taking sleep medication * Currently taking medication for endocrine dysfunction * Currently taking medication that interferes with sleep or cortisol levels * Excessive alcohol/substance use or AUD/SUD * Serious mental illness * Chronic medical conditions (which may be exacerbated by sleep restriction) * Pregnant or nursing women * Women in the peri-menopausal stage due to irregular menses and fluctuations in sex hormones.
Contact & Investigator
Frequently Asked Questions
Who can join the NCT07156383 clinical trial?
This trial is open to participants of all sexes, aged 18 Years or older, studying Chronic Insomnia. Full inclusion and exclusion criteria are listed in the Eligibility Criteria section. Always confirm your eligibility with the research team before applying.
Is NCT07156383 currently recruiting?
Yes, NCT07156383 is actively recruiting participants. Contact the research team at ivargas@nd.edu for enrollment information.
Where is the NCT07156383 trial being conducted?
This trial is being conducted at Notre Dame, United States.
Who is sponsoring the NCT07156383 clinical trial?
NCT07156383 is sponsored by University of Notre Dame. The trial plans to enroll 115 participants.
Related Trials
Related Intelligence Guides
In-depth guides covering this condition's trials, eligibility, and what to expect.