Evidence map›Paper›PMID 32893864›Full record

ArticleSleep2021

Dynamics of sleep, sedentary behavior, and moderate-to-vigorous physical activity on school versus nonschool days.

Bridget Armstrong, Michael W Beets, Angela Starrett, Keith Brazendale, Gabrielle Turner-McGrievy, Brian E Saelens, Russell R Pate, Shawn D Youngstedt, Alberto Maydeu-Olivares, R Glenn Weaver

Abstract read
In one paragraph

Article in Sleep, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 14 papers.

0numbers the graph read from it
0cells of the map it votes in
14citing 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

14 citing papers in PubMed.

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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.

Bridget ArmstrongDepartment of Exercise Science, University of South Carolina, Columbia, SC.
Michael W BeetsDepartment of Exercise Science, University of South Carolina, Columbia, SC.
Angela StarrettCollege of Education, University of South Carolina, Columbia, SC.
Keith BrazendaleDepartment of Health Sciences, University of Central Florida, Orlando, FL.
Gabrielle Turner-McGrievyDepartment of Health Promotion, Education, and Behavior, University of South Carolina, Columbia, SC.
Brian E SaelensSeattle Children's Hospital, Center for Child Health Behavior and Development, Seattle, WA.
Russell R PateDepartment of Exercise Science, University of South Carolina, Columbia, SC.
Shawn D YoungstedtDepartment of Nursing and Health Innovation, Arizona State University, Phoenix, AZ.
Alberto Maydeu-OlivaresDepartment of Psychology, University of South Carolina, Columbia, SC.
R Glenn WeaverDepartment of Exercise Science, University of South Carolina, Columbia, SC.

Funding

Investigating the Role of Structured Days on Accelerated Weight Gain during SummerR21HD095164 · NICHD · UNIVERSITY OF SOUTH CAROLINA AT COLUMBIA · PI WEAVER, ROBERT G · 2018 to 2019
$491k
NICHD NIH HHS R21 HD095164
6 · The paper itself

Abstract

STUDY

objectivesStudies examining time-use activity behaviors (sleep, sedentary behavior, and physical activity) on school days compared with nonschool days have examined these behaviors independently, ignoring their interrelated nature, limiting our ability to optimize the health benefits of these behaviors. This study examines the associations of school-day (vs. nonschool day) with time-use activity behaviors.

methodsTime series data (6,642 days) from Fitbits (Charge-2) were collected (n = 196, 53% female, 5-10 years). We used a variable-centered dynamic structural equation modeling approach to estimate day-to-day associations of time-use activity behaviors on school days for each child. We then used person-centered cluster analyses to group individuals based on these estimates.

resultsWithin-participant analysis showed that on school days (vs. nonschool days), children (1) slept less (β = -0.17, 95% CI = -0.21, -0.13), (2) were less sedentary (β = -0.05, 95% CI = -0.09, -0.02), and (3) had comparable moderate-to-vigorous physical activity (MVPA; β = -0.05, 95% CI = -0.11, 0.00). Between-participant analysis showed that, on school days, children with higher sleep carryover experienced greater decreases in sleep (β = 0.44, 95% CI = 0.08, 0.71), children with higher body mass index z-score decreased sedentary behavior more (β = -0.41, 95% CI = -0.64, -0.13), and children with lower MVPA increased MVPA more (β = -0.41, 95% CI -0.64, -0.13). Cluster analysis demonstrated four distinct patterns of connections between time-use activity behaviors and school (High Activity, Sleep Resilient, High Sedentary, and Dysregulated Sleep).

conclusionsUsing a combination of person-centered and more traditional variable-centered approaches, we identified patterns of interrelated behaviors that differed on school, and nonschool days. Findings can inform targeted intervention strategies tailored to children's specific behavior patterns.

Indexed as

ExerciseSedentary BehaviorAccelerometryBody Mass IndexChildCross-Sectional StudiesFemaleHumansMaleSchoolsSleepchildrenintensive longitudinalperson-centeredphysical activityschoolsedentarysleep

Identifiers

PMID32893864
PMCPMC7982135

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.