Evidence map›Paper›PMID 39587539›Full record

ArticleBMC public health2024

Relative age effect on the physical activity and sedentary behavior in children and adolescents aged 10 to 18 years old: a cross-sectional study in Japan.

Takaaki Mori, Takumi Aoki, Kan Oishi, Tetsuo Harada, Chiaki Tanaka, Shigeho Tanaka, Hideki Tanaka, Kazuhiko Fukuda, Yasuko Kamikawa, Nobuhiro Tsuji and 16 more

Abstract read
PubMed Full text at PMC Publisher
In one paragraph

Article in BMC public health, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.

0numbers the graph read from it
0cells of the map it votes in
3citing 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

3 citing papers in PubMed.

  1. Article
  2. Article
  3. Relative age effects in ice hockey extends to coaching.Frontiers in sports and active living · 2024
    Article
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

26 authors.

Takaaki MoriGraduate School of Health and Sports Science, Doshisha University, Kyotanabe, Japan. tmorisf10@outlook.jp.
Takumi AokiFaculty of Education, Miyagi Gakuin Women's University, Sendai, Japan.
Kan OishiFaculty of Health and Sports Science, Doshisha University, Kyotanabe, Japan.
Tetsuo HaradaEducation Unit, Humanities and Social Science Cluster, Research and Education Faculty, Kochi University, Kochi, Japan.
Chiaki TanakaDepartment of Human Nutrition, Tokyo Kasei Gakuin University, Tokyo, Japan.
Shigeho TanakaFaculty of Nutrition, Kagawa Nutrition University, Sakado, Japan.
Hideki TanakaDepartment of Medical Science and Technology, Faculty of Health Science, Hiroshima International University, Higashihiroshima, Japan.
Kazuhiko FukudaDepartment of Psychology and Humanities, Faculty of Sociology, Edogawa University, Nagareyama, Japan.
Yasuko KamikawaEmeritus Professor, University of Toyama, Toyama, Japan.
Nobuhiro TsujiGraduate School of Education, Shiga University, Otsu, Japan.
Keisuke KomuraFaculty of Agriculture, Meijo University, Nagoya, Japan.
Shohei KokudoSchool of Health and Sports Sciences, Chukyo University, Toyota, Japan.
Noriteru MoritaDepartment of Sports Cultural Studies, Hokkaido University of Education, Iwamizawa, Japan.
Kazuhiro SuzukiFaculty of Education, Miyagi Gakuin Women's University, Sendai, Japan.
Masashi WatanabeFaculty of Education, Ibaraki University, Mito, Japan.
Ryoji KasanamiHealth and Sports Science Education, Faculty of Education, Nara University of Education, Nara, Japan.
Taketaka HaraFaculty of Education, Shimane University, Matsue, Japan.
Ryo MiyazakiFaculty of Human Sciences, Shimane University, Matsue, Japan.
Takafumi AbeCenter for Community-Based Healthcare Research and Education (CoHRE), Head Office for Research and Academic Information, Shimane University, Izumo, Japan.
Koji YamatsuFaculty of Education, Saga University, Saga, Japan.
Daisuke KumeFaculty of Information Science and Technology, Osaka Institute Technology, Hirakata, Japan.
Hedenori AsaiFaculty of Collaborative Regional Innovation, Ehime University, Matsuyama, Japan.
Naofumi YamamotoFaculty of Collaborative Regional Innovation, Ehime University, Matsuyama, Japan.
Taishi TsujiFaculty of Health and Sports Sciences, University of Tsukuba, Tokyo, Japan.
Tomoki NakayaGraduate School of Environmental Studies, Tohoku University, Sendai, Japan.
Kojiro IshiiFaculty of Health and Sports Science, Doshisha University, Kyotanabe, Japan. kishii@mail.doshisha.ac.jp.

Funding

Japan Society for the Promotion of Science JP 18H01000Japan Society for the Promotion of Science JP 19K21797Japan Society for the Promotion of Science JP 21H00848
6 · The paper itself

Abstract

backgroundFew studies have shown that relatively younger children and adolescents (those born later in the same school year) were less likely to engage in physical activity in a phenomenon termed the relative age effect. Although these studies mainly targeted elementary and middle school students, no study has reported on the relative age effect on physical activity in ordinary high school students. Moreover, the relative age effect on sedentary behavior might show an opposite association with physical activity. Therefore, we aimed to clarify the relative age effects on physical activity and sedentary behavior across different school stages in Japanese children and adolescents.

methodsA cross-sectional questionnaire survey was conducted with 21,491 children and adolescents (elementary, middle, and high school students aged 10-18 years) in various Japanese regions from January 2018 to July 2019. Overall, 18,281 children and adolescents (10,299 boys and 7,982 girls) were finally included in our analysis. Data on the birth month, frequency and duration of their physical activity (vigorous, moderate, and moderate-to-vigorous intensity), and sedentary behavior (weekday and weekend total sedentary time, television viewing, playing video games, and Internet use) were obtained. We utilized two-part model regression analyses. Statistically significant association with birth month indicated that a relative age effect was observed.

resultsThe relatively younger individuals were less likely to engage in physical activity (especially vigorous physical activity (VPA)); this association was observed in middle and high school students. Conversely, the relatively younger boys spent more time during weekends with sedentary behaviors and Internet use. Based on school stage, the relative age effect on VPA time was observed in middle school boys (average margin effect (AME) = -0.74, p < 0.01) and high school students (boys: AME = -0.69, p < 0.01; girls: AME = -0.53, p < 0.05). The relative age effect on sedentary behavior was observed during weekends with sedentary behaviors (AME = 3.55, p < 0.01), playing video games (AME = 0.72, p < 0.05) and Internet use (AME = 2.46, p < 0.01) for male high school students and on television viewing (AME = 1.12, p < 0.05) for female middle school students.

conclusionThe relative age effect on physical activity can persist after middle school, and the relatively younger individuals are more likely to replace physical activity with sedentary behavior.

Indexed as

ExerciseSedentary BehaviorAdolescentAge FactorsChildCross-Sectional StudiesFemaleHumansJapanMaleSurveys and QuestionnairesAdolescencePhysical activityRelative age effectSchoolSedentary behavior

Identifiers

PMID39587539
PMCPMC11590493

What Socratic holds

Textmetadata
LicenceCC BY-NC-ND
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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.