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Sleep Timing, Eating and Activity Measurement Study

NCT04992611 · Status: COMPLETED · Phase: NA · Type: INTERVENTIONAL · Enrollment: 190

Last updated 2025-12-18

No results posted yet for this study

Summary

There is strong reason to believe that sleep promotion during adolescence could yield long-term health rewards; the investigators' data show that, when they get more sleep, Morning Larks have impressively reduced intake of overall calories and foods high in glycemic load that are linked to long-term health risk. Before that can be translated into major public health interventions, however, the field needs to understand why similar changes in sleep had no effect, or even an adverse effect, on adolescent Night Owls. This experimental study will clarify why there have been such discrepant effects across Morning Larks and Night Owls, with the goal of more broadly harnessing the promise of improved sleep in the prevention of obesity and long-term morbidity.

Conditions

  • Sleep
  • Circadian Rhythm Disorders
  • Dietary Habits

Interventions

BEHAVIORAL

Sleep Extension (Early)

Following a periods of time meant to stabilize their sleep patterns and to induce mild sleep restriction, participants will be randomly assigned to one of two sleep extension conditions, both of which are designed to allow recommended sleep duration. The Early Sleep Extension condition does so by keeping rise time the same as the sleep restriction period, but extending sleep by going to bed earlier. This produces a sleep extension that is aligned for Morning Larks and misaligned for Night Owls.

BEHAVIORAL

Sleep Extension (Late)

Following a periods of time meant to stabilize their sleep patterns and to induce mild sleep restriction, participants will be randomly assigned to one of two sleep extension conditions, both of which are designed to allow recommended sleep duration. The Early Sleep Extension condition does so by keeping bedtime the same as the sleep restriction period, but extending sleep by rising later. This produces a sleep extension that is misaligned for Morning Larks and aligned for Night Owls.

Sponsors & Collaborators

  • Rush University

    collaborator OTHER

  • Children's Hospital Medical Center, Cincinnati

    lead OTHER

Principal Investigators

  • Dean W Beebe, PhD · Cincinnati Children's

Study Design

Allocation
RANDOMIZED
Purpose
BASIC_SCIENCE
Masking
SINGLE
Model
FACTORIAL

Eligibility

Min Age
14 Years
Max Age
18 Years
Sex
ALL
Healthy Volunteers
Yes

Timeline & Regulatory

Start
2021-07-16
Primary Completion
2025-07-26
Completion
2025-07-26

Countries

  • United States

Study Locations

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Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT04992611 on ClinicalTrials.gov