The impact of early bedtimes on adolescent caloric intake varies by chronotype
Open accessAbstract
Purpose Adolescent sleep restriction is common and can lead to overeating. Here, we test whether lengthening sleep via early bedtimes affects dietary intake differently for adolescents accustomed to a later sleep phase ("night owls") versus an earlier sleep phase ("morning larks").Methods Using a randomized cross-over design, 67 adolescents changed bedtimes to create five-night periods of sleep restriction (6.5 hours in bed) versus healthy sleep (10 hours in bed). Caloric intake was measured via validated interviews. Phase preference was based on participants' premanipulation sleep.Results Actigraphy verified that the manipulation altered sleep regardless of phase preference. Phase preference moderated the effect of the manipulation on cumulative caloric intake (p = .01-.03). Night owls showed little effect, but morning larks reduced their evening intake during healthy sleep.Conclusions An "early to bed" approach confers little dietary benefit for night owls but may have a protective effect for adolescents who gravitate toward earlier bedtimes.
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In a randomized crossover study of 67 adolescents, during healthy sleep (10 h in bed induced by earlier sleep), adolescents with a morning chronotype reduced their evening energy intake, whereas no changes in evening energy intake were seen in adolescents with an evening chronotype.
“During the intervention involving healthy sleep, adolescents with a morning chronotype were found to reduce their evening energy intake, whereas no changes in evening energy intake were seen in adolescents with an evening chronotype.”
From Chronotype: Implications for Epidemiologic Studies on Chrono-Nutrition and Cardiometabolic Health (2019) · cites this paper as [104]
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- Authors
- Beebe, D. W., Zhou, A., Rausch, J., Noe, O., & Simon, S. L.
- Affiliations
- Cincinnati Children's Hospital Medical Center (US)
- University of Cincinnati (US)
- Boston College (US)
- Children's Hospital Colorado (US)
- Corresponding author
- Beebe, Dean W.
- Venue
- Journal of Adolescent Health
- Publisher
- Elsevier BV
- Published
- 2015-07
- Volume
- 57
- Issue
- 1
- Pages
- 120-122
- ISSN
- 1054-139X (ISSN-L)
- PMC
- PMC4478236
- OpenAlex
- W1963663446
- Cited by
- 30
- References
- 12
- Citations by year
- 2026: 2 · 2025: 1 · 2024: 3 · 2022: 2 · 2021: 3 · 2020: 3 · 2019: 3 · 2018: 4 · 2017: 3 · 2016: 5 · 2015: 1
- FWCI
- 6.53
- Type
- journal article
- Language
- en
- Open access
- bronze
- doi.org
- Locations
- Journal of Adolescent Health (publishedVersion)
- PubMed (publishedVersion)
- PubMed Central (acceptedVersion)
- Funders
- National Institutes of Health (5ul1rr026314-03, UL1TR000077)
- National Heart, Lung, and Blood Institute (R01HL092149, T35HL113229)
- National Center for Research Resources (UL1-RR026314)
- National Center for Advancing Translational Sciences
- Topics
- Social Sciences › Psychology › Experimental and Cognitive Psychology › Sleep and related disorders
- Life Sciences › Neuroscience › Endocrine and Autonomic Systems › Circadian rhythm and melatonin
- Social Sciences › Psychology › Experimental and Cognitive Psychology › Sleep and Work-Related Fatigue
- Keywords
- early bedtime, energy intake, chronotype, night owls, overeating, sleep duration
- MeSH terms
- Adolescent, Adolescent Behavior, Energy Intake, Chronobiology Phenomena, Diet, Feeding Behavior, Female, Humans, Interviews as Topic, Male, Sleep, Sleep Deprivation, Time Factors, Cross-Over Studies, Actigraphy
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