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Sleep Loss and Glucose Metabolism in People With Family History of Type 2 Diabetes.

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ClinicalTrials.gov Identifier: NCT00721019
Recruitment Status : Completed
First Posted : July 23, 2008
Last Update Posted : September 5, 2013
Information provided by (Responsible Party):

July 21, 2008
July 23, 2008
September 5, 2013
July 2008
March 2012   (Final data collection date for primary outcome measure)
Total body insulin sensitivity [ Time Frame: at the end of each bedtime intervention ]
Same as current
Complete list of historical versions of study NCT00721019 on ClinicalTrials.gov Archive Site
  • First and second phase insulin secretion [ Time Frame: at the end of each bedtime intervention ]
  • Endogenous glucose production [ Time Frame: at the end of each bedtime intervention ]
  • Glycerol turnover and free fatty acid concentrations [ Time Frame: at the end of each bedtime intervention ]
Same as current
Not Provided
Not Provided
Sleep Loss and Glucose Metabolism in People With Family History of Type 2 Diabetes.
Sleep, Energy Metabolism and Diabetes Risk.
The use of sugar and starch-like foods for energy (carbohydrate metabolism) changes when people sleep. However, it is still not known if differences in the amount of nighttime sleep have an effect on the carbohydrate metabolism of people who have a relative with type 2 diabetes (parent, sibling, or grandparent). This study is being done to test the hypothesis that the carbohydrate metabolism of people who have a history of type 2 diabetes in their family will be different after they have slept short hours for 10 days in comparison to when they have slept longer hours for 10 days.
Study participants will complete two 10-day inpatient stays in the sleep laboratory of the University of Chicago Clinical Resource Center scheduled at least 4 weeks apart. Bedtime duration will be set at 5 hours per night during one of these stays and 8.5 hours per night during the other. No daytime naps will be allowed. Study participants will be served regular daily meals including breakfast, lunch, dinner, and a bedtime snack. On weekdays all participants will engage in simulated "office work" while in the sleep laboratory. During the rest of the time participants will maintain their usual indoor and outdoor activities as much as possible within the limits of the University of Chicago campus. During the last two days of each inpatient stay in the laboratory, participants will undergo two different tests. The first test will determine how much insulin does their body produce in response to an intravenous glucose infusion lasting several hours. The second test will determine how effective is the action of the sugar-processing hormone, insulin, in their body when it is infused intravenously together with glucose over a period of several hours.
Not Provided
Allocation: Randomized
Intervention Model: Crossover Assignment
Masking: None (Open Label)
Primary Purpose: Basic Science
  • Sleep
  • Sleep Deprivation
  • Insulin Resistance
  • Type 2 Diabetes
  • Other: 5-hour bedtime
    10 days with sleep restricted only to a 5-hour bedtime period at night
  • Other: 8.5-hour bedtimes
    10 days with sleep allowed only during a 8.5-hour period at night
  • Experimental: 5-hour bedtime
    Intervention: Other: 5-hour bedtime
  • Experimental: 8.5-hour bedtime
    Intervention: Other: 8.5-hour bedtimes
Not Provided

*   Includes publications given by the data provider as well as publications identified by ClinicalTrials.gov Identifier (NCT Number) in Medline.
March 2012
March 2012   (Final data collection date for primary outcome measure)

Inclusion Criteria:

  • regular sleep habits
  • BMI 20 to 27 kg/m2
  • at least one parent, sibling or grandparent with type 2 diabetes
  • no regular exercise habits

Exclusion Criteria:

  • active smoker
  • night or shift work
  • have highly variable sleep habits
  • have a hormonal disorder
  • have a sleep disorder
  • have an active medical problem
  • women only: use of birth control pills
  • women only: irregular menstrual periods or pregnancy
  • use of medications/compounds that can disrupt sleep
Sexes Eligible for Study: All
21 Years to 40 Years   (Adult)
Contact information is only displayed when the study is recruiting subjects
United States
R01HL089637 ( U.S. NIH Grant/Contract )
Not Provided
Not Provided
University of Chicago
University of Chicago
National Heart, Lung, and Blood Institute (NHLBI)
Principal Investigator: Plamen D Penev, MD, PhD University of Chicago
University of Chicago
September 2013

ICMJE     Data element required by the International Committee of Medical Journal Editors and the World Health Organization ICTRP