Studies how sleep and body clock affect nighttime blood pressure
Examines how sleep and body rhythms relate to blood pressure at night in adults.
Key facts
- Who runs it
- University of Alabama at Birmingham
- Where
- Birmingham, United StatesSee the site
- Trial code
- Registry title
- Sleep and Circadian Contributions to Nighttime Blood Pressure
- Status
- Enrolling by invitation
- People taking part
- 1,427 people, planned
- Started
- 1 Jun 2023
- Expected to end
- 30 Dec 2028
- Type of study
- Interventional
- Treatments tested
- Constant Routine Protocol
- Record updated
- 29 January 2026
Who can take part
AI summary
From the trial's eligibility criteria. Machine-read from the registry text on this page, so it can be wrong. The registry text below and the trial team decide who can take part.
The trial is looking for adults who already take part in the parent grant study called IDH-MEGA. It studies how sleep and body-clock factors affect blood pressure at night.
- Age
- 18 years or older
- Sex
- All sexes can join.
The registry criteria, word for word
Show all 2 criteriaShow less
Who can take part
- Participant in the parent grant (IDH-MEGA)
Who cannot take part
- -
Where in United States
- University of Alabama at BirminghamBirmingham, United StatesEnrolling by invitation
About the trial
What the trial wants to find out
Broadly, this study (SCN-BP) seeks to examine sleep and circadian factors that contribute to blood pressure levels at night.
The group in the trial
- Constant Routine ProtocolTreatment being tested
Participants complete a 30-hour constant routine protocol to directly examine markers of endogenous circadian rhythms. In a constant routine protocol, participants remain in a dimly lit room (\<10 lux), in a semi-recumbent posture, remain awake, and consume iso-caloric snacks. Saliva samples are collected and core body temperature and blood pressure are measured.
Questions to ask the study team
- How often do I need to come in, and for how long each time?
- Are travel costs paid?
- Can I keep my own doctor?
- What happens if I want to stop?
Contact the study team: see the registry record → Contacts and Locations
Print a page for my doctorData and sources
- Registry record
- Listed on ClinicalTrials.gov.
- Official title
- Sleep and Circadian Contributions to Nighttime Blood Pressure
- Plain-language title
- Studies how sleep and body clock affect nighttime blood pressureGenerated from the registry record. The registry title is the official one.
- AI summary
- From the trial's eligibility criteria. Read by machine on 12 November 2026.
- Record updated
- 29 January 2026