Biomarkers of Habitual Short Sleep and Related Cardiometabolic Risk
Overview
- Phase
- Not Applicable
- Intervention
- Not specified
- Conditions
- Lifestyle Factors
- Sponsor
- University of Utah
- Enrollment
- 70
- Locations
- 1
- Primary Endpoint
- Total Plasma Ceramides
- Status
- Recruiting
- Last Updated
- last year
Overview
Brief Summary
The overall goal is to determine how a sleep extension intervention (increasing time in bed) in individuals who maintain less than 6.5 hours sleep per night affects their plasma ceramides and insulin sensitivity. Participants will undergo a randomized controlled trial, with sleep extension (intervention) and healthy lifestyle (control) groups. The sleep extension is designed to increase participant's time in bed by 2 hours per night. Alternatively, the control group will receive basic health information (e.g., physical activity, goal setting, and nutrition when eating out).
Detailed Description
A randomized controlled trial with real-world sleep extension in adults with overweight and obesity who habitually obtain short sleep duration will be conducted. Group allocation will be 1:1 and research staff and participants will be blinded until the conclusion of the baseline segment. The sleep extension group will receive counseling and instruction to increase nightly time in bed by 2 hours per night. Participants randomized to control will maintain their habitual sleep habits in their home environment. The intervention segment will last 8 weeks regardless of group assignment. Both groups will have equal contact time with the study team. Prior to enrollment participants will complete a clinical overnight sleep disorders screening. Baseline consists of an \~1-week ambulatory real-world monitoring segment. Following baseline, participants will be randomized 1:1 to either the sleep extension or control group for 8 weeks at home (intervention segment). Throughout the study, sleep duration will be monitored using an actiwatch wrist-device and a daily electronic sleep log. Following the baseline and intervention segments participants will complete rigorous overnight laboratory visits to assess plasma ceramides (targeted metabolomics assay) and insulin sensitivity (hyperinsulinemic-euglycemic clamp).
Investigators
Christopher Depner
Assistant Professor
University of Utah
Eligibility Criteria
Inclusion Criteria
- •Age: 18-45 years old; equal numbers of men and women
- •Body mass index (BMI): 27.5-34.9 kg/m2
- •Sleep Habits: habitual self-reported average total sleep time (TST) \<6.5 hours per night for prior 6 months
Exclusion Criteria
- •Clinically diagnosed sleep disorder or major psychiatric illness
- •Evidence of significant organ dysfunction or disease (e.g., heart disease, kidney disease)
- •Clinically diagnosed diabetes or fasting plasma glucose ≥126 mg/dL or HbA1c ≥6.5%
- •Use of prescription drugs or substances known to influence sleep or glucose metabolism, or anticoagulant medications.
- •Cancer that has been in remission less than 5 years
- •Pregnant/nursing, experiencing menopause or post-menopausal
- •Shift-work: current or history of within last year
- •Weight change: \>10% of body weight over prior six months
- •Current enrollment in weight loss or physical activity program like the Diabetes Prevention Program
- •Currently smoking
Outcomes
Primary Outcomes
Total Plasma Ceramides
Time Frame: Immediately after the intervention
Total plasma ceramides will be measured by assessing plasma ceramides by targeted metabolomics.
Insulin Sensitivity
Time Frame: Immediately after the intervention
Insulin sensitivity will be measured by the glucose infusion rate per kg body weight during the hyperinsulinemic-euglycemic clamp.
Secondary Outcomes
- Circadian Phase (change from baseline)(Immediately after the intervention)
- Body Mass Index(Immediately after the intervention)
- Average (per week) nightly total sleep time (change from baseline)(Analyzed as change from baseline for each week of the ~8 week experimental segment)
- Average (per week) sleep satisfaction change from baseline(Analyzed as change from baseline for each week of the ~8 week experimental segment)
- Average (per week) timing of food intake change from baseline(During the baseline ambulatory assessment and weeks 2, 4, 6, and 8 of the intervention ambulatory assessment.)
- Average (per week) daytime alertness change from baseline(Time Frame: Analyzed as change from baseline for each week of the ~8 week experimental segment)
- Individual C16, C18, C20, C22, C24, and C24:1 Plasma Ceramides, Dihydroceramides, Glucosylceramides, and fourteen Sphingolipids.(Immediately after the intervention)
- Cardiac Event Risk Test 1 (CERT 1)(Immediately after the intervention)