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Individual Differences in Diabetes Risk: Role of Sleep Disturbances

The recruitment status of this study is unknown because the information has not been verified recently.
Verified October 2009 by University of Chicago.
Recruitment status was  Recruiting
Information provided by:
University of Chicago Identifier:
First received: October 1, 2009
Last updated: October 2, 2009
Last verified: October 2009

The hypothesis for this study is that some individuals may be at much higher risk to develop type 2 diabetes and that the individual diabetes risk will be predicted by the individual level of slow wave sleep activity (SWA).

Condition Intervention
Behavioral: normal sleep times
Behavioral: bedtime restriction

Study Type: Interventional
Study Design: Allocation: Randomized
Intervention Model: Crossover Assignment
Masking: Open Label
Primary Purpose: Basic Science
Official Title: Individual Differences in Diabetes Risk: Role of Sleep Disturbances

Resource links provided by NLM:

Further study details as provided by University of Chicago:

Primary Outcome Measures:
  • diabetes risk as assessed by disposition index [ Time Frame: Dec. 2011 ] [ Designated as safety issue: No ]

Estimated Enrollment: 32
Study Start Date: February 2009
Estimated Study Completion Date: December 2011
Estimated Primary Completion Date: December 2011 (Final data collection date for primary outcome measure)
Arms Assigned Interventions
8.5 h sleep
Subjects will have normal sleep times
Behavioral: normal sleep times
8.5 h bedtimes
restricted bedtimes
4.5 h bedtimes
Behavioral: bedtime restriction
4.5 h restricted bedtimes


Ages Eligible for Study:   18 Years to 29 Years
Genders Eligible for Study:   Both
Accepts Healthy Volunteers:   Yes

Inclusion Criteria:

  • Healthy men and women with low Slow Wave Sleep Activity (SWA) or high SWA with the gender distribution in each group matching the gender distribution of active duty Army personnel (85% men; 15% women) based on the following inclusion criteria:

    • age 18 to 29 years,
    • normal weight or modestly overweight (BMI ≤ 27 kg/m2 for women, BMI ≤ 28 kg/m2 for men),
    • normal findings on clinical examination, normal routine laboratory tests results, normal EKG, no history of psychiatric, endocrine, cardiac or sleep disorders.
  • Only subjects who have regular life styles (no shift work, no travel across time zone during the past 4 weeks), habitual bedtimes between 7.0-8.5 hours, and do not take medications will be recruited.
  • An overnight polysomnography will be performed to rule out sleep-disordered breathing (apnea-hypopnea index > 5/hour) and periodic limb movement disorder (PLM arousal index >1/hour).
  • Women taking hormonal contraceptive therapy and pregnant women will be excluded. In women, all studies will be initiated in the early follicular phase.

Exclusion Criteria:

  • Tobacco use.
  • Habitual alcohol use of more than 2 1 drink per day.
  • Excessive caffeine intake of more than 300 mg per day and individuals with a metal implant or another metal object in their body.

We estimate that we will need to recruit at least 60-70 individuals to obtain two gender-matched groups of 16 individuals with either low or high SWA.

  Contacts and Locations
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Please refer to this study by its identifier: NCT00989976

Contact: Florian Chapotot, PhD

United States, Illinois
The University of Chicago Recruiting
Chicago, Illinois, United States, 60637
Contact: Florian Chapotot, PhD    773-834-3437   
Principal Investigator: Eve Van Cauter, PhD         
Sponsors and Collaborators
University of Chicago
Principal Investigator: Eve Van Cauter, PhD University of Chicago
  More Information

No publications provided

Responsible Party: Eve Van Cauter, PhD, Professor, The University of Chicago Identifier: NCT00989976     History of Changes
Other Study ID Numbers: #16028A, DOD PR064727
Study First Received: October 1, 2009
Last Updated: October 2, 2009
Health Authority: United States: Institutional Review Board

Keywords provided by University of Chicago:
Diabetes Risk

Additional relevant MeSH terms:
Diabetes Mellitus
Sleep Disorders
Endocrine System Diseases
Glucose Metabolism Disorders
Mental Disorders
Metabolic Diseases
Nervous System Diseases
Neurologic Manifestations
Signs and Symptoms processed this record on November 19, 2014