Sleep Restriction and Obesity

This study is currently recruiting participants. (see Contacts and Locations)
Verified February 2015 by Mayo Clinic
Information provided by (Responsible Party):
Virend Somers, Mayo Clinic Identifier:
First received: April 17, 2012
Last updated: February 2, 2015
Last verified: February 2015

Insufficient sleep may be one of the most common, and most preventable, obesity risk factors. The investigators wish to determine whether 14 nights of modest sleep restriction results in increased energy balance, thus potentially increasing the risk of obesity. The investigators hypothesize that sleep restriction will result in increased energy balance.

Condition Intervention
Behavioral: Sleep restriction

Study Type: Interventional
Study Design: Allocation: Randomized
Intervention Model: Crossover Assignment
Masking: Open Label
Primary Purpose: Basic Science
Official Title: Sleep Restriction and Obesity

Further study details as provided by Mayo Clinic:

Primary Outcome Measures:
  • Change in caloric intake [ Time Frame: baseline to 21 days ] [ Designated as safety issue: No ]
  • Change in activity energy expenditure [ Time Frame: baseline to 21 days ] [ Designated as safety issue: No ]
    Change in activity energy expenditure, measured during acclimation, experimental, and recovery.

  • Change in total energy expenditure [ Time Frame: baseline to 21 days ] [ Designated as safety issue: No ]
    Change in total energy expenditure, a combination of activity energy expenditure, thermic effect of food (TEF), and basal metabolic rate (BMR).

  • Change in leptin levels, fat tissue characteristics, and body composition [ Time Frame: baseline to 21 days ] [ Designated as safety issue: No ]
    Changes in energy expenditure will be associated with alterations in fat tissue characteristics from serial fat biopsies, and altered body composition measured by DEXA and computed tomography imaging

Secondary Outcome Measures:
  • Change in neurocognitive deficits [ Time Frame: baseline to 21 days ] [ Designated as safety issue: No ]
    Change in neurocognitive function measured by battery.

  • Change in blood pressure and autonomic function [ Time Frame: baseline to 21 days ] [ Designated as safety issue: No ]
    Change in mean arterial blood pressure and autonomic function over 24 hour periods.

  • Change in markers of inflammation and endothelial function [ Time Frame: baseline to 21 days ] [ Designated as safety issue: No ]

Estimated Enrollment: 20
Study Start Date: July 2012
Estimated Study Completion Date: June 2018
Estimated Primary Completion Date: June 2016 (Final data collection date for primary outcome measure)
Arms Assigned Interventions
Experimental: Sleep restriction
Sleep restriction
Behavioral: Sleep restriction
14 days of sleep restriction, 4 hours of sleep per day.
No Intervention: Normal sleep
Normal sleep

Detailed Description:

Numerous studies have reported that self-reported short sleep duration is associated with obesity and weight gain. Insufficient sleep may be one of the most common, and most preventable, obesity risk factors. Given that sleep restriction is largely voluntary and potentially correctable, understanding the mechanisms that link insufficient sleep to positive energy balance and the development of obesity, particularly visceral obesity, is crucial to clinical applications, public health policy, and informing future studies. The investigators wish to determine whether 14 nights of modest sleep restriction results in increased energy balance, thus potentially increasing the risk of obesity. The investigators will combine energy balance, biomarker, and imaging data with state-of-the art sleep monitoring to provide unambiguous data on the effects of sleep restriction on obesity. Together, the investigators findings will help explain whether the reduced sleep duration in the general population may be contributing to the current epidemic of obesity, and suggest strategies to reduce this risk.


Ages Eligible for Study:   18 Years to 40 Years
Genders Eligible for Study:   Both
Accepts Healthy Volunteers:   Yes

Inclusion Criteria:

  • Age 18-40 years
  • BMI of 18.5-24.9 kg/m2
  • Not a current smoker or tobacco user
  • No chronic medical or psychiatric disorders
  • On no prescription medications other than second generation antihistamines (cetirizine, fexofenadine, desloratadine, loratadine, etc), oral contraceptive pills, or intrauterine devices
  • History of normal sleep patterns, defined as nocturnal sleep duration of 6.5-8 hours per night without regular daytime naps

Exclusion Criteria:

  • The investigators will exclude subjects who have any medical or psychiatric disorders
  • History of anxiety or depression
  • Those taking any medications other than non-sedating antihistamines or oral contraceptives will be excluded
  • Those found to have depression on a depression screening tool (BDI-II) will be excluded
  • Current smokers will be excluded
  • All female subjects will undergoing a screening pregnancy test and excluded if positive
  • Subjects found to have significant sleep disorders will be excluded
  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: NCT01580761

Contact: CPL Lab

United States, Minnesota
Mayo Clinic in Rochester Recruiting
Rochester, Minnesota, United States, 55905
Sponsors and Collaborators
Mayo Clinic
Principal Investigator: Virend Somers, MD, PhD Mayo Clinic
  More Information

No publications provided

Responsible Party: Virend Somers, MD, PhD, Mayo Clinic Identifier: NCT01580761     History of Changes
Other Study ID Numbers: 11-007272
Study First Received: April 17, 2012
Last Updated: February 2, 2015
Health Authority: United States: Institutional Review Board

Additional relevant MeSH terms:
Body Weight
Nutrition Disorders
Signs and Symptoms processed this record on August 30, 2015