Evidence map›Paper›PMID 41916773›Full record

ArticleObesity (Silver Spring, Md.)2026

Associations of Screen Time and Physical Activity With Body Mass Index in Early Adolescence: A Prospective Cohort Study.

Jason M Nagata, Isaac Frimpong, Nathan D Nguyen, Alexander Heuer, Christiane K Helmer, Abubakr A Al-Shoaibi, Kyle T Ganson, Alexander Testa, Erin E Dooley, Kelley Pettee Gabriel and 2 more

Abstract read
PubMed Full text at PMC Publisher
In one paragraph

Article in Obesity (Silver Spring, Md.), 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

12 authors.

Jason M NagataDivision of Adolescent and Young Adult Medicine, Department of Pediatrics, University of California, San Francisco, California, USA.
Isaac FrimpongDivision of Adolescent and Young Adult Medicine, Department of Pediatrics, University of California, San Francisco, California, USA.ORCID https://orcid.org/0009-0007-3012-1486
Nathan D NguyenDivision of Adolescent and Young Adult Medicine, Department of Pediatrics, University of California, San Francisco, California, USA.ORCID https://orcid.org/0009-0002-9575-1757
Alexander HeuerDivision of Adolescent and Young Adult Medicine, Department of Pediatrics, University of California, San Francisco, California, USA.ORCID https://orcid.org/0009-0003-0582-3591
Christiane K HelmerDivision of Adolescent and Young Adult Medicine, Department of Pediatrics, University of California, San Francisco, California, USA.ORCID https://orcid.org/0009-0003-2935-382X
Abubakr A Al-ShoaibiDivision of Adolescent and Young Adult Medicine, Department of Pediatrics, University of California, San Francisco, California, USA.ORCID https://orcid.org/0000-0001-6513-9984
Kyle T GansonFactor-Inwentash Faculty of Social Work, University of Toronto, Toronto, Ontario, Canada.
Alexander TestaDepartment of Management, Policy and Community Health, University of Texas Health Science Center at Houston, Houston, Texas, USA.ORCID https://orcid.org/0000-0002-8686-9115
Erin E DooleyDepartment of Epidemiology, University of Alabama at Birmingham, Birmingham, Alabama, USA.
Kelley Pettee GabrielDepartment of Epidemiology, University of Alabama at Birmingham, Birmingham, Alabama, USA.
Fiona C BakerCenter for Health Sciences, SRI International, Menlo Park, California, USA.ORCID https://orcid.org/0000-0001-9602-6165
Holly C GoodingDivision of General Pediatrics and Adolescent Medicine, Department of Pediatrics, Emory University School of Medicine, Atlanta, Georgia, USA.

Funding

Informing national guidelines on adolescent and young adult physical activity and sedentary behavior to prevent cardiovascular diseaseK08HL159350 · NHLBI · UNIVERSITY OF CALIFORNIA, SAN FRANCISCO · PI NAGATA, JASON M · 2021 to 2025
$869k
Doris Duke Charitable Foundation 2022056NHLBI NIH HHS K08 HL159350NIH HHS K08HL159350
6 · The paper itself

Abstract

objectiveThis study aimed to prospectively identify the independent, mutually adjusted, and interactive associations of screen time and physical activity with BMI and overweight/obesity risk in adolescents.

methodsThis study analyzed prospective data from 5356 US adolescents in the Adolescent Brain Cognitive Development (ABCD) Study, Year 2 (2018-2020, ages 11-12) and Year 4 (2020-2022, ages 13-14).

resultsMean daily screen time was 6.1 (±5.2) hours and mean step count was 9265 (±3227) steps in Year 2; 32.7% were classified with overweight/obesity in Year 4. In Poisson regression models examining the exposures mutually adjusted for each other, high screen time (> 8 h/day) was associated with higher risk of overweight/obesity (risk ratio [RR], 1.09; 95% CI, 1.02-1.16; p = 0.013) compared with low screen time (0-4 h/day). In multivariable linear and Poisson regression models, respectively, low step count (1000-6000 steps/day) was associated with higher BMI percentile (coefficient [B], 3.27; 95% CI, 1.54-4.99; p < 0.001) and higher risk of overweight/obesity (RR, 1.23; 95% CI, 1.07-1.40; p = 0.003) compared with high step count (> 12,000 steps/day). No significant interactions were observed between screen time and step count.

conclusionsThese findings suggest that obesity prevention efforts should consider both greater physical activity and less recreational screen use as behavioral interventions.

Indexed as

Body Mass IndexExercisePediatric ObesityScreen TimeAdolescentChildFemaleHumansMaleOverweightProspective StudiesRisk FactorsUnited Statesbody compositionexerciseteenwearable deviceyouth

Identifiers

PMID41916773
PMCPMC13116022

What Socratic holds

Textmetadata
LicenceCC BY
Read underepoch 390

Registered trials

None linked

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 Socratic graph.