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

The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details. Identifier: NCT00721019
Recruitment Status : Completed
First Posted : July 23, 2008
Last Update Posted : September 5, 2013
National Heart, Lung, and Blood Institute (NHLBI)
Information provided by (Responsible Party):
University of Chicago

Brief Summary:
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.

Condition or disease Intervention/treatment Phase
Sleep Sleep Deprivation Insulin Resistance Type 2 Diabetes Other: 5-hour bedtime Other: 8.5-hour bedtimes Not Applicable

Detailed Description:
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.

Study Type : Interventional  (Clinical Trial)
Actual Enrollment : 11 participants
Allocation: Randomized
Intervention Model: Crossover Assignment
Masking: None (Open Label)
Primary Purpose: Basic Science
Official Title: Sleep, Energy Metabolism and Diabetes Risk.
Study Start Date : July 2008
Actual Primary Completion Date : March 2012
Actual Study Completion Date : March 2012

Resource links provided by the National Library of Medicine

Arm Intervention/treatment
Experimental: 5-hour bedtime Other: 5-hour bedtime
10 days with sleep restricted only to a 5-hour bedtime period at night

Experimental: 8.5-hour bedtime Other: 8.5-hour bedtimes
10 days with sleep allowed only during a 8.5-hour period at night

Primary Outcome Measures :
  1. Total body insulin sensitivity [ Time Frame: at the end of each bedtime intervention ]

Secondary Outcome Measures :
  1. First and second phase insulin secretion [ Time Frame: at the end of each bedtime intervention ]
  2. Endogenous glucose production [ Time Frame: at the end of each bedtime intervention ]
  3. Glycerol turnover and free fatty acid concentrations [ Time Frame: at the end of each bedtime intervention ]

Information from the National Library of Medicine

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Ages Eligible for Study:   21 Years to 40 Years   (Adult)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   Yes

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

Information from the National Library of Medicine

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.

Please refer to this study by its identifier (NCT number): NCT00721019

United States, Illinois
University of Chicago
Chicago, Illinois, United States, 60637
Sponsors and Collaborators
University of Chicago
National Heart, Lung, and Blood Institute (NHLBI)
Principal Investigator: Plamen D Penev, MD, PhD University of Chicago

Responsible Party: University of Chicago Identifier: NCT00721019     History of Changes
Other Study ID Numbers: 16079A-S3
R01HL089637 ( U.S. NIH Grant/Contract )
First Posted: July 23, 2008    Key Record Dates
Last Update Posted: September 5, 2013
Last Verified: September 2013

Keywords provided by University of Chicago:
short sleep duration
glucose clamp technique
insulin secretion
insulin action
lipid turnover
free fatty acids

Additional relevant MeSH terms:
Diabetes Mellitus
Diabetes Mellitus, Type 2
Insulin Resistance
Sleep Deprivation
Glucose Metabolism Disorders
Metabolic Diseases
Endocrine System Diseases
Sleep Wake Disorders
Nervous System Diseases
Neurologic Manifestations
Signs and Symptoms
Mental Disorders