Sleep Restriction and Energy Expenditure

NCT ID: NCT01751581

Last Updated: 2013-08-02

Basic Information

• Recruitment Status: COMPLETED
• Clinical Phase: NA
• Total Enrollment: 10 participants
• Study Classification: INTERVENTIONAL
• Study Start Date: 2011-11-30
• Study Completion Date: 2013-04-30

Brief Summary

Each 4-day period will follow the same protocol. Basically, for the entire study, we will prepare all of the subject's food and will require him or her to eat all of the food that we give at the times we tell them to eat. The subject will arrive at the hospital on the evening of day 1, and become inpatients. On day 2, the subject will be permitted to leave the hospital campus under the supervision of the research staff. On day 3, they will be required to stay in a small room called a metabolic chamber for 24 hours. This room measures how many calories you burn in one day. On day 4, we will measure the subject's energy expenditure in response to a breakfast meal. They will be given breakfast and the number of calories that they burn after that meal will be measured over a 6-hour period. Then the subject will be discharged at the end of the test. The 2 study periods will differ only in bedtimes and wakeup times. During one period, the subject will go to bed at 1 am and wake up at 5 am and during the other period they will go to bed at 11 pm and wake up at 7 am.

Detailed Description

Sleeping metabolic rate will be measured using a metabolic chamber on the night of day 2. During day 3, 24-hour energy expenditure (including a second night of measurement) will be measured in the metabolic chamber. On this day, the participant will perform 2 bouts of physical activity on a stationary bicycle for 15 minutes each bout. This will give us a measurement of physical activity energy expenditure. On day 4, at 7 am, the participant will exit the metabolic chamber and will enter a different, smaller metabolic chamber for the measurement of energy expenditure in response to a meal. This measurement will start at approximately 8 am with assessment of the resting metabolic rate (45 minutes). The participant will then be given a high-fat meal replacement to consume over 10 minutes. Energy expenditure measurements continue in the metabolic chamber for a 6-hour period.

Conditions

Obesity

Keywords

Obesity; Resting Metabolic Rate; Sleep; Eating

Study Design

• Allocation Method: RANDOMIZED
• Intervention Model: CROSSOVER
• Primary Study Purpose: BASIC_SCIENCE
• Blinding Strategy: NONE

Study Groups

Habitual Sleep

Women sleep 8 h/night throughout the study phase

Group Type: ACTIVE_COMPARATOR

Habitual sleep

Intervention Type: BEHAVIORAL

Participants sleep 8 h/night throughout the study phase (from 11 pm to 7 am)

Short Sleep

Women sleep 4 h/night throughout the study phase

Group Type: EXPERIMENTAL

Short Sleep

Intervention Type: BEHAVIORAL

Participants will be restricted in sleep and only allowed to sleep from 1 am to 5 am.

Interventions

Short Sleep

Participants will be restricted in sleep and only allowed to sleep from 1 am to 5 am.

Intervention Type: BEHAVIORAL

Habitual sleep

Participants sleep 8 h/night throughout the study phase (from 11 pm to 7 am)

Intervention Type: BEHAVIORAL

Eligibility Criteria

Inclusion Criteria

• Age 21-45 yrs
• Non-pregnant, non-lactating female subjects
• Body mass index (BMI) 25-28 kg/m2
• Weight stable (± 2.5 kg) for at least 3 mo prior to evaluation
• If a woman of child-bearing potential, must be willing to adhere to an acceptable form of contraception
• Non-smoker
• Regularly sleeps 7-8.5 hours/night

Exclusion Criteria

• Diabetes, uncontrolled hypertension
• Attempted to lose weight in past 3 months
• Eating disorder
• Stroke, seizure disorder, or other significant neurological disease;
• HIV positive by self-report
• Unstable or uncontrolled medical illness including active malignancies within past 5 yrs
• Untreated or unstable hypothyroidism
• Hyperthyroidism
• A score on the Brief Psychiatric Inventory that exceeds the 90th percentile;
• Subjects with psychoses, bipolar disorder, major depression, severe personality disorders, suicidal
• Alcohol or substance abuse in the past 6 mo
• Pregnant, planning pregnancy in the next 6 mo, or breast-feeding
• Participating in a commercial diet or behavior modification program (e.g., Weight Watchers), or plans to participate
• Shift worker, commercial long-distance driver, heavy equipment operator, history of drowsy driving
• Takes naps regularly
• Has traveled across time zones in the past 4 weeks or plans to during the weeks of the study
• Excessive caffeine intake

• Minimum Eligible Age: 21 Years
• Maximum Eligible Age: 45 Years
• Eligible Sex: FEMALE
• Accepts Healthy Volunteers: Yes

Sponsors

St. Luke's-Roosevelt Hospital Center

OTHER

Sponsor Role: lead

Responsible Party

Responsibility Role: SPONSOR

Principal Investigators

Marie-Pierre St. Onge, PhD

Role: PRINCIPAL_INVESTIGATOR

St. Luke's Roosevelt Hospital/Columbia University

Locations

St. Luke's Hospital

New York, New York, United States

Countries

United States

References

Shechter A, Rising R, Albu JB, St-Onge MP. Experimental sleep curtailment causes wake-dependent increases in 24-h energy expenditure as measured by whole-room indirect calorimetry. Am J Clin Nutr. 2013 Dec;98(6):1433-9. doi: 10.3945/ajcn.113.069427. Epub 2013 Oct 2.

Reference Type: DERIVED

PMID: 24088722 (View on PubMed)

Other Identifiers

SLR-P&F-1

Identifier Type: -

Identifier Source: org_study_id