NCT07317349 The Effect of a Continuous 1-Hour Time Delay on Circadian Rhythms
| NCT ID | NCT07317349 |
| Status | Recruiting |
| Phase | — |
| Sponsor | University of Aarhus |
| Condition | Circadian Rhythms |
| Study Type | INTERVENTIONAL |
| Enrollment | 40 participants |
| Start Date | 2025-12-20 |
| Primary Completion | 2027-03-01 |
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 40 participants in total. It began in 2025-12-20 with a primary completion date of 2027-03-01.
⚠ 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 investigate whether the experience of a daily time delay can affect our internal circadian rhythm.
Eligibility Criteria
Inclusion Criteria * Healthy adults aged 23-45 years * Part of a heterosexual, cohabiting couple willing to participate together in a five-day in-laboratory study * Both partners meet all inclusion criteria * Completion of at least upper-secondary education * Maintain a regular sleep-wake schedule * Habitual sleep timing within a normative range (non-extreme chronotype), assessed using the Morningness-Eveningness Questionnaire (MEQ) or the Munich Chronotype Questionnaire (MCTQ) * Both partners fall within the acceptable chronotype range to ensure aligned sleep-wake patterns * Low seasonality scores on the Seasonal Pattern Assessment Questionnaire (SPAQ) * Free from underlying sleep or mood disorders Exclusion Criteria * Engages in night-shift work or maintains an irregular work or sleep schedule * International travel involving a time-zone change of more than two hours within the past two months, or anticipated travel before study completion * Diagnosed neurological, psychiatric, or sleep disorder (e.g., insomnia, sleep apnea, bipolar disorder) * High risk of sleep apnea, defined as a Berlin Questionnaire score \>2 (Lauritzen et al., 2018) * Use of medications known to affect sleep, alertness, melatonin secretion, or circadian timing * Unable or unwilling to comply with behavioral restrictions, including refraining from electronic devices displaying time cues unless clocks are removed and devices are disconnected from Wi-Fi * Unable or unwilling to comply with consumption restrictions, including abstaining from caffeine, alcohol, and melatonin-rich foods during the study * Extreme chronotype, defined as a habitual midsleep time outside 03:00-05:00 on the MCTQ or classification as an extreme morning or extreme evening type on the MEQ * Daily caffeine consumption exceeding 400 mg (approximately 4-5 cups of coffee) * Current smoker or smoking within the past six months
Contact & Investigator
Frequently Asked Questions
Who can join the NCT07317349 clinical trial?
This trial is open to participants of all sexes, aged 23 Years or older, up to 45 Years, studying Circadian Rhythms. Full inclusion and exclusion criteria are listed in the Eligibility Criteria section. Always confirm your eligibility with the research team before applying.
Is NCT07317349 currently recruiting?
Yes, NCT07317349 is actively recruiting participants. Contact the research team at ali@psy.au.dk for enrollment information.
Where is the NCT07317349 trial being conducted?
This trial is being conducted at Aarhus, Denmark.
Who is sponsoring the NCT07317349 clinical trial?
NCT07317349 is sponsored by University of Aarhus. The trial plans to enroll 40 participants.