Evidence map›Paper›PMID 28043827›Full record

ArticlePreventive medicine2017

Objectively-measured physical activity in children is influenced by social indicators rather than biological lifecourse factors: Evidence from a Brazilian cohort.

Alan G Knuth, Inácio Crochemore M Silva, Vincent T van Hees, Kelly Cordeira, Alícia Matijasevich, Aluísio J D Barros, Iná Santos, Ulf Ekelund, Pedro Curi Hallal

Abstract read
In one paragraph

Article in Preventive medicine, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
7citing 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

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

  1. Pooled it
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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

9 authors.

Alan G KnuthFederal University of Rio Grande (FURG), Postgraduate Program in Public Health, Brazil. Electronic address: alan_knuth@yahoo.com.br.
Inácio Crochemore M SilvaFederal University of Pelotas (UFPel), Postgraduate Program in Epidemiology, Brazil.
Vincent T van HeesMedical Research Council (MRC), Epidemiology Unit, Institute of Metabolic Science, University of Cambridge, Cambridge, UK.
Kelly CordeiraFederal University of Pelotas (UFPel), Postgraduate Program in Epidemiology, Brazil.
Alícia MatijasevichFederal University of Pelotas (UFPel), Postgraduate Program in Epidemiology, Brazil; Department of Preventive Medicine, University of São Paulo, São Paulo, Brazil.
Aluísio J D BarrosFederal University of Pelotas (UFPel), Postgraduate Program in Epidemiology, Brazil.
Iná SantosFederal University of Pelotas (UFPel), Postgraduate Program in Epidemiology, Brazil.
Ulf EkelundDepartment of Sport Medicine, Norwegian School of Sport Sciences, Oslo, Norway; Medical Research Council (MRC), Epidemiology Unit, Institute of Metabolic Science, University of Cambridge, Cambridge, UK.
Pedro Curi HallalFederal University of Pelotas (UFPel), Postgraduate Program in Epidemiology, Brazil; Department of Sport Medicine, Norwegian School of Sport Sciences, Oslo, Norway.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The aim of this study was to examine the longitudinal influences of early life social and biological indicators on objectively measured physical activity. All newborns in 2004 in the city of Pelotas, Southern Brazil were enrolled in a birth cohort study. At the age of 6years, a follow-up visit included objective assessment of overall physical activity (summarized in milli-g, 1mg=0.001g) by tri-axial wrist worn accelerometry. The associations between early life exposures, such as type of delivery, parity, birth weight, preterm delivery, maternal physical activity, socioeconomic position, and overall physical activity were examined. Valid accelerometry data were obtained from 2604 children (78.2% of the eligible individuals). Girls were less active than boys (β=-8.65mg; 95% CI -10.0; -7.30). Higher socioeconomic position was related to lower activity levels (β=-9.69mg. 95% CI -12.45; -6.93) and a similar association was found with maternal schooling. No associations were found with birthweight, type of delivery or preterm delivery. This study provides evidence for the role of some social factors in explaining children's physical activity behaviors, and minimizes the influence of some early life biological factors at determining physical activity levels.

Indexed as

Biological FactorsExerciseAccelerometryBirth WeightBrazilChildCohort StudiesFemaleHumansInfant, NewbornLongitudinal StudiesMalePregnancySocial EnvironmentSocioeconomic FactorsBiological FactorsHealth determinantsPediatricsPhysical activity assessment

Identifiers

PMID28043827
PMCPMC5347809

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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.