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

This study has been completed.
National Heart, Lung, and Blood Institute (NHLBI)
Information provided by (Responsible Party):
University of Chicago Identifier:
First received: July 21, 2008
Last updated: September 4, 2013
Last verified: September 2013
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 Intervention
Sleep Sleep Deprivation Insulin Resistance Type 2 Diabetes Other: 5-hour bedtime Other: 8.5-hour bedtimes

Study Type: Interventional
Study Design: Allocation: Randomized
Intervention Model: Crossover Assignment
Masking: None (Open Label)
Primary Purpose: Basic Science
Official Title: Sleep, Energy Metabolism and Diabetes Risk.

Further study details as provided by University of Chicago:

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

Secondary Outcome Measures:
  • 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 ]

Enrollment: 11
Study Start Date: July 2008
Study Completion Date: March 2012
Primary Completion Date: March 2012 (Final data collection date for primary outcome measure)
Arms Assigned Interventions
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

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.

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
  Contacts and Locations
Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the Contacts provided below. For general information, see Learn About Clinical Studies.

Please refer to this study by its identifier: 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
  More Information

Responsible Party: University of Chicago Identifier: NCT00721019     History of Changes
Other Study ID Numbers: 16079A-S3
R01HL089637 ( U.S. NIH Grant/Contract )
Study First Received: July 21, 2008
Last Updated: September 4, 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 processed this record on August 18, 2017