Cerebrovascular Circulation
Conditions
Brief summary
The goal of this clinical trial is to compare the impact of restricted sleep on brain blood health in healthy men and women. The main question\[s\] it aims to answer are: * Whether morning cerebral blood flow velocity is greater following a night of normal sleep compared to restricted sleep * Whether the effect of sleep restriction on cerebral blood flow will be greater in males compared to females Participants will complete one 1-hour screening visit and two 2.5-hour study visits. Study visits will be conducted on two separate days.
Detailed description
Transcranial Doppler (TCD) is a non-invasive diagnostic tool used to estimate cerebral blood flow velocity (CBFV), cerebral autoregulation, cerebrovascular reactivity (CVR), intracranial pressure, cerebral perfusion pressure as well as other indicators of cerebral hemodynamics and autoregulation. Whereas TCD has been widely used in research, clinical, and outpatient settings, studies specifically designed to examine the effect of limited sleep on brain health and potential impact of sex are sparse. Thus, the present study will investigate sex-specific differences in cerebral blood flow under conditions of normal and restricted sleep. Investigators will conduct measures of CBFV and CVR on two separate days under tightly controlled experimental conditions. This study hypothesizes greater morning cerebral blood flow velocity following a night of normal sleep compared to restricted sleep. This study further hypothesize the effect of sleep restriction on CBFV and CVR will be greater in males compared to females. Results from the present study will provide important data necessary to develop future, well-controlled studies examining the impact of long-term modifications in exercise and/or sleep on cerebral hemodynamics and, by extension, risk for cerebrovascular events (i.e. stroke).
Interventions
DIAGNOSTIC_TESTCerebral blood flow
Transcranial Doppler (TCD) is a non-invasive diagnostic tool used to estimate cerebral blood flow velocity (CBFV), cerebral autoregulation, cerebrovascular reactivity (CVR), intracranial pressure, cerebral perfusion pressure as well as other indicators of cerebral hemodynamics and autoregulation.
Sponsors
University of Missouri-Columbia
Study design
Allocation
RANDOMIZED
Intervention model
SINGLE_GROUP
Primary purpose
OTHER
Masking
SINGLE (Subject)
Eligibility
Sex/Gender
ALL
Age
18 Years to 45 Years
Healthy volunteers
Yes
Inclusion criteria
* Healthy adult men and women, 18-45 years of age, BMI 18-30 kg/m2, non-pregnant, non-breastfeeding, and non-nicotine users
Exclusion criteria
* any medications known to affect sleep, autonomic, metabolic, or cardiovascular health, have a self-reported history of hepatic, renal, pulmonary, cardiovascular, or neurological disease, stroke or neurovascular disease, bleeding/clotting disorders, sleep apnea or other sleep disorders, diabetes, history of alcoholism or substance abuse, major cardiovascular event or surgical procedure within the past three months, or hypertension
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Cerebral blood flow velocity | Two days | Greater morning cerebral blood flow velocity following a night of normal sleep compared to restricted sleep |
Countries
United States
Outcome results
None listed