Sleep Timing on Energy Intake and Energy Expenditure

NCT ID: NCT05096585

Last Updated: 2023-03-10

Basic Information

• Recruitment Status: COMPLETED
• Clinical Phase: NA
• Total Enrollment: 17 participants
• Study Classification: INTERVENTIONAL
• Study Start Date: 2021-08-01
• Study Completion Date: 2022-12-01

Brief Summary

Studies in healthy young adults have shown that abnormal and undesirable physiological changes are a result of chronic sleep curtailment, with implications on inflammatory status, blood glucose regulation, circulating free fatty acids, and insulin sensitivity. Epidemiological studies suggest an increase in energy intake with shortened, sleep and this has been associated with weight gain. Interestingly most studies examining sleep restriction do not consider whether the restricted sleep is due to sleep delay or an advanced wake time. This study will investigate the change in physical activity or food intake during a period of sleep restriction. To date only one study has addressed this question but they only examined one study night and followed their subjects for only 24 hr. The objective of the proposed project is to examine the effects of shortened sleep on potential changes in physical activity and energy intake.

The investigators hypothesize that after several nights of short sleep that different strategies are employed to remain awake and these strategies will also vary whether bed time was delayed or wake time was advanced.

Aim 1: To examine the effects of sleep timing on energy intake and expenditure during periods of sleep restriction

Detailed Description

Subjects will have preliminary screening tests. There will be 3 study conditions, with the latter 2 conditions (delayed bed time/advanced wake time) will be completed in a randomized, crossover design. Subjects will wear an activity monitor (actigraph) and sleep monitor (actiwatch) for 6 days. Dietary records and smart phones will be used record energy intake.

For the first experimental condition, the subject will wear the actiwatch and actigraph, and monitor food intake for 6 day of normal sleep. This condition will allow determination of their sleep pattern and when they habitually go to bed (ie. 11 pm - 5 am) and awaken.

On the second condition, the investigators will allow subjects to maintain their usual physical activity and dietary patterns but the investigators will ask subjects to delay the time of going to bed by 2 hr. Subjects will be followed for 4 nights of shortened sleep but data will be collected for 6 days. On the other condition, subjects will go to bed at the usual time but awaken 2 hr earlier that they normally would. Again subjects will monitor their physical activity, hunger/fullness, sleep and energy intake. These latter 2 conditions will be randomized.

Visit 1: Subjects will be provided a verbal explanation of the study and will sign the informed consent if interested. Subjects will then complete questionnaires assessing health history, sleep, morningness and physical activity habits.

Visit 2: Subjects will collect physical activity monitor (actigraph) and sleep monitor (actiwatch) along with surveys to fill out each day about dietary consumption, sleep habits and physical activity, lasting for 6 days. Subjects will also be asked to photograph any food or drink they consume.

Visit 3: Return the actiwatch and actigraph.

Visit 4-5: Repeat of Visit 2-3.

Visit 6-7: Repeat of Visit 2-3.

Conditions

Obesity

Study Design

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

Study Groups

normal sleep

Subjects will go to sleep at their normal bedtime and normal sleep duration (7-9 hr)

Group Type: PLACEBO_COMPARATOR

Delayed bedtime sleep restriction

Intervention Type: BEHAVIORAL

bedtime 2 hr later than their normal bedtime

Early wake sleep restriction

Intervention Type: BEHAVIORAL

wake time 2 hr earlier than their normal wake time

delayed bedtime sleep restriction

Subjects will go to sleep at 2 hr later than their normal bedtime

Group Type: EXPERIMENTAL

Delayed bedtime sleep restriction

Intervention Type: BEHAVIORAL

bedtime 2 hr later than their normal bedtime

Early wake sleep restriction

Intervention Type: BEHAVIORAL

wake time 2 hr earlier than their normal wake time

early waking sleep restriction

Subjects will wake up 2 hr earlier than their normal wake time

Group Type: EXPERIMENTAL

Delayed bedtime sleep restriction

Intervention Type: BEHAVIORAL

bedtime 2 hr later than their normal bedtime

Early wake sleep restriction

Intervention Type: BEHAVIORAL

wake time 2 hr earlier than their normal wake time

Interventions

Delayed bedtime sleep restriction

bedtime 2 hr later than their normal bedtime

Intervention Type: BEHAVIORAL

Early wake sleep restriction

wake time 2 hr earlier than their normal wake time

Intervention Type: BEHAVIORAL

Eligibility Criteria

Inclusion Criteria

Overweight and obese men and women 21-45 years of age BMI of <40 kg/m2 normally active (>5000 steps per day) sleep: 7-9 hours per night

Exclusion Criteria

type 1 diabetes cardiovascular disease uncontrolled hypertension smoker pregnant recent changes in hormonal birth control night shift workers take regular daytime naps operate heavy equipment Sleep less than 7 hour/night

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

Sponsors

University of Missouri-Columbia

OTHER

Sponsor Role: lead

Responsible Party

Jill Kanaley

professor

Responsibility Role: PRINCIPAL_INVESTIGATOR

Principal Investigators

Jill Kanaley, PhD

Role: PRINCIPAL_INVESTIGATOR

University of Missouri-Columbia

Locations

University of Misouri

Columbia, Missouri, United States

Countries

United States

Other Identifiers

sleep timing 2016786

Identifier Type: -

Identifier Source: org_study_id