Evidence map›Paper›PMID 29879929›Full record

ArticleBMC public health2018

Cross-sectional and prospective associations between sleep, screen time, active school travel, sports/exercise participation and physical activity in children and adolescents.

Knut Eirik Dalene, Sigmund A Anderssen, Lars Bo Andersen, Jostein Steene-Johannessen, Ulf Ekelund, Bjørge H Hansen, Elin Kolle

Abstract read
In one paragraph

Article in BMC public health, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 26 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
26citing papers in PubMed, 1 pooled it
–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

26 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Pooled it
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  4. Screen time and allostatic load among youth: findings from the National Health and Nutrition Examination Survey, 2015-2018.Annals of behavioral medicine : a publication of the Society of Behavioral Medicine · 2025
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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

7 authors.

Knut Eirik DaleneDepartment of Sports Medicine, the Norwegian School of Sport Sciences, Oslo, Norway. k.e.dalene@nih.no.ORCID 0000-0002-4401-301X
Sigmund A AnderssenDepartment of Sports Medicine, the Norwegian School of Sport Sciences, Oslo, Norway.
Lars Bo AndersenDepartment of Sports Medicine, the Norwegian School of Sport Sciences, Oslo, Norway.
Jostein Steene-JohannessenDepartment of Sports Medicine, the Norwegian School of Sport Sciences, Oslo, Norway.
Ulf EkelundDepartment of Sports Medicine, the Norwegian School of Sport Sciences, Oslo, Norway.
Bjørge H HansenDepartment of Sports Medicine, the Norwegian School of Sport Sciences, Oslo, Norway.
Elin KolleDepartment of Sports Medicine, the Norwegian School of Sport Sciences, Oslo, Norway.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundThe aim of this study was to investigate how sleep, screen time, active school travel and sport and/or exercise participation associates with moderate-to-vigorous physical activity (MVPA) in nationally representative samples of Norwegian 9- and 15-y-olds, and whether these four behaviors at age nine predict change in MVPA from age nine to 15 years.

methodWe pooled cross-sectional accelerometer and questionnaire data from 9- (n = 2366) and 15-y-olds (n = 1554) that participated in the first (2005/06) and second (2011/12) wave of the Physical Activity among Norwegian Children Study to investigate cross-sectional associations. To investigate prospective associations, we used data from a sub-sample that participated in both waves (at age nine and 15 years, n = 517).

resultsCross-sectional analyses indicated a modest, inverse association between screen time and MVPA among 9- (- 2.2 min/d (95% CI: -3.1, - 1.3)) and 15-y-olds (- 1.7 min/d (95% CI: -2.7, - 0.8)). Compared to their peers with 0-5 min/d of active travel to school, 9- and 15-y-olds with ≥16 min/d accumulated 7.2 (95% CI: 4.0, 10.4) and 9.0 (95% CI: 3.8, 14.1) more min/d of MVPA, respectively. Nine-y-old boys and 15-y-olds reporting ≥8 h/week of sports and/or exercise participation accumulated 14.7 (95% CI: 8.2, 21.3) and 17.9 (95% CI: 14.0, 21.8) more min/d of MVPA, respectively, than those reporting ≤2 h/week. We found no cross-sectional association between sleep duration and MVPA in either age group. None of the four behaviors predicted change in MVPA from age nine to 15 years (p ≥ 0.102).

conclusionActive travel to school and sport/exercise participation may be important targets for future interventions aimed at increasing MVPA in children and adolescents. However, future studies are needed to determine causality.

Indexed as

SchoolsScreen TimeSleepAccelerometryAdolescentChildCross-Sectional StudiesExerciseFemaleHumansMaleNorwayProspective StudiesSportsSurveys and QuestionnairesTransportationAccelerometerActive travelExercisePhysical activtyScreen timeSleepSport

Identifiers

PMID29879929
PMCPMC5992852

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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.