Evidence map›Paper›PMID 12688827›Full record

SynthesisSports medicine (Auckland, N.Z.)2003

Secular trends in the performance of children and adolescents (1980-2000): an analysis of 55 studies of the 20m shuttle run test in 11 countries.

Grant R Tomkinson, Luc A Léger, Tim S Olds, Georges Cazorla

Abstract readMeta-Analysis
PubMed Publisher
In one paragraph

Synthesis in Sports medicine (Auckland, N.Z.), 2003. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 133 papers, 12 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
133citing papers in PubMed, 12 pooled it
12.8field-weighted citation impact, top 1% of its field
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

133 citing papers in PubMed, 12 syntheses or guidelines pooled it, 466 citations in OpenAlex.

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  13. Trial
  14. Impact on Physical Fitness of the Chinese CHAMPS: A Clustered Randomized Controlled Trial.International journal of environmental research and public health · 2019
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  16. Tracking the relationship between children's aerobic fitness and cognitive control.Health psychology : official journal of the Division of Health Psychology, American Psychological Association · 2016
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  18. The effect of active video games by ethnicity, sex and fitness: subgroup analysis from a randomised controlled trial.The international journal of behavioral nutrition and physical activity · 2014
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73 more citing papers are in PubMed but not listed here.

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

4 authors at 3 institutions in 3 countries.

Grant R TomkinsonComputer Simulation Laboratory, School of Health Sciences, University of South Australia, Underdale, South Australia, Australia. grant_tomkinson@yahoo.com
Luc A Léger
Tim S Olds
Georges Cazorla
University of South Australia · AUUniversité de Bordeaux · FRUniversité de Montréal · CA

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

It is widely believed that the performance of children and adolescents on aerobic fitness tests is declining. To test this hypothesis, this meta-analysis compared the results of 55 reports of the performance of children and adolescents aged 6-19 years who have used the 20m shuttle run test (20mSRT). All data were collected in the period 1981-2000. Following corrections for methodological variation, the results of all studies were expressed using the common metric of running speed (km/h) at the last completed stage. Raw data were combined with pseudodata generated from reported means and standard deviations using Monte Carlo simulation. Where data were available on children and adolescents from the same country of the same age and sex, but tested at different times, linear regression was used to calculate rates of change. This was possible for 11 (mainly developed) countries, representing a total of 129,882 children and adolescents in 151 age x sex x country slices. There has been a significant decline in performance in the 11 countries where data were available, and in most age x sex groups, with a sample-weighted mean decline of 0.43% of mean values per year. The decline was most marked in older age groups and the rate of decline was similar for boys and girls. There has been a very rapid secular decline in the 20mSRT performance of children and adolescents over the last 20 years, at least in developed countries. The rate of decline is not related to the change in the country's relative wealth, as quantified by per capita gross domestic product (GDP).

Indexed as

Physical FitnessTask Performance and AnalysisAdolescentAdultChildEnergy MetabolismFemaleHumansMaleMonte Carlo MethodMulticenter Studies as TopicRunning

Identifiers

PMID12688827
OpenAlexW2143230725

What OpenQuestion holds

Textmetadata
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 OpenQuestion graph.