Evidence map›Paper›PMID 42029562›Full record

ArticleClocks & sleep2026

Light Exposure Rhythms and Sleep Organization in Adolescents: Temporal Differences Between Weekdays and Weekends in an Actigraphic Study.

Emilly Francianne Lamego da Silva, Guilherme Martins, Francimara Diniz Ribeiro, Leonardo Martins Guimaraes Rossi, Milena Fernandes de Oliveira, Camila Fernanda Cunha Brandão, Lucas Rios Drummond, Lucas Tulio Lacerda, Thais de Fatima Bittencourt Oliveira, Michael Jackson Oliveira de Andrade

Abstract read
PubMed Full text at PMC Publisher
In one paragraph

Article in Clocks & sleep, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

0numbers the graph read from it
0cells of the map it votes in
0citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

0 citing papers in PubMed.

No citing paper in PubMed yet.

4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

10 authors.

Emilly Francianne Lamego da SilvaLaboratory of Neuroscience, Chronobiology, and Sleep Psychology, Room 101, State University of Minas Gerais, Divinopolis 35501-170, Brazil.
Guilherme MartinsLaboratory of Neuroscience, Chronobiology, and Sleep Psychology, Room 101, State University of Minas Gerais, Divinopolis 35501-170, Brazil.ORCID 0009-0009-5504-2754
Francimara Diniz RibeiroLaboratory of Neuroscience, Chronobiology, and Sleep Psychology, Room 101, State University of Minas Gerais, Divinopolis 35501-170, Brazil.
Leonardo Martins Guimaraes RossiLaboratory of Neuroscience, Chronobiology, and Sleep Psychology, Room 101, State University of Minas Gerais, Divinopolis 35501-170, Brazil.
Milena Fernandes de OliveiraLaboratory of Neuroscience, Chronobiology, and Sleep Psychology, Room 101, State University of Minas Gerais, Divinopolis 35501-170, Brazil.
Camila Fernanda Cunha BrandãoLaboratory for Research in Metabolism, Physiology, Physical Exercise, State University of Minas Gerais, Divinópolis 35501-170, Brazil.ORCID 0000-0002-3330-8007
Lucas Rios DrummondStudy and Research Group on Strength Training in Health, Physical Conditioning, State University of Minas Gerais, Divinópolis 35501-170, Brazil.ORCID 0000-0002-6042-7757
Lucas Tulio LacerdaResearch Group on Exercise, Sports Physiology, State University of Minas Gerais, Divinópolis 35501-170, Brazil.
Thais de Fatima Bittencourt OliveiraLaboratory of Neuroscience, Chronobiology, and Sleep Psychology, Room 101, State University of Minas Gerais, Divinopolis 35501-170, Brazil.
Michael Jackson Oliveira de AndradeLaboratory of Neuroscience, Chronobiology, and Sleep Psychology, Room 101, State University of Minas Gerais, Divinopolis 35501-170, Brazil.ORCID 0000-0002-2650-451X

Funding

Fundação de Amparo à Pesquisa do Estado de Minas Gerais APQ-04870-24
6 · The paper itself

Abstract

Light exposure is a primary zeitgeber for the human circadian system and plays a key role in shaping sleep-wake patterns during adolescence, a period marked by biological sensitivity and social constraints. How the temporal organization and spectral composition of daily light exposure differ between weekdays and weekends remains poorly understood. Eighteen adolescents (15-17 years) were monitored for seven days using wrist actigraphy with integrated light sensors. Sleep parameters, nonparametric circadian rhythm indices, and time-resolved profiles of ambient and spectral (blue, green, and red) light exposure were analyzed. Repeated-measures ANOVA tested the effects of time of day and day type. Total sleep time and time in bed were longer on weekdays than on weekends (

Indexed as

adolescentscircadian rhythmslight exposure

Identifiers

PMID42029562
PMCPMC13108061

What OpenQuestion holds

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Registered trials

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.