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Relative Age and Passing Performance in Pre-adolescent Football Players (RAE-LSPT)

21. juli 2026 opdateret af: Édison Andrés Pérez Bedoya, Federal University of Vicosa

Relative Age and Passing Performance in Pre-adolescent Football Players: A Cross-Sectional Study Using the Loughborough Soccer Passing Test

This completed cross-sectional observational study examined whether relative age within an annual selection cycle was associated with passing performance in pre-adolescent football players. Participants were classified by birth month, birth quarter and birth semester. Passing performance was assessed using the Loughborough Soccer Passing Test, in which players completed 16 passes to colour-coded targets as quickly and accurately as possible. Total performance time combined movement time, time penalties for errors and time bonuses for accurate passes. The study evaluated the distribution of players across the selection year and the association between relative age and passing-test performance while accounting for the two chronological birth cohorts represented in the sample.

Studieoversigt

Status

Afsluttet

Betingelser

Detaljeret beskrivelse

Annual age grouping in youth football can create a relative age effect, characterised by the over-representation of players born earlier in the selection year. This pattern is often attributed to temporary developmental advantages, but it is unclear whether earlier-born pre-adolescent players also demonstrate superior technical performance.

The study used a cross-sectional observational design in a youth football development programme in Bello, Colombia. The source cohort contained 61 participant records. Birth month was used to classify players into four relative-age quarters: Q1 (January-March), Q2 (April-June), Q3 (July-September) and Q4 (October-December), and into two semesters: H1 (January-June) and H2 (July-December).

Passing performance was measured with the Loughborough Soccer Passing Test. Players were scheduled to complete two trials separated by five minutes. Each trial comprised 16 externally cued passes to four colour-coded target areas. Movement time was adjusted by adding penalties for inaccurate execution or protocol violations and subtracting bonuses for striking the central target strip. Lower total performance time indicated better performance. The primary technical outcome was the mean total performance time across available trials. Sensitivity outcomes included Trial 1 and the best trial.

The primary analysis estimated the association between birth month and LSPT total performance time after adjustment for birth cohort. Additional analyses examined representation by quarter and semester and agreement between the two LSPT trials. Data collection was completed in 2017. The study is being registered retrospectively in 2026 to improve transparency and support public sharing of the anonymised dataset and analysis materials.

Undersøgelsestype

Observationel

Tilmelding (Faktiske)

61

Kontakter og lokationer

Dette afsnit indeholder kontaktoplysninger for dem, der udfører undersøgelsen, og oplysninger om, hvor denne undersøgelse udføres.

Studiesteder

  • Colombia
    • Antioquia
      • Guarne, Antioquia, Colombia, 054080
        • Tecnológico de Antioquia

Deltagelseskriterier

Forskere leder efter personer, der passer til en bestemt beskrivelse, kaldet berettigelseskriterier. Nogle eksempler på disse kriterier er en persons generelle helbredstilstand eller tidligere behandlinger.

Berettigelseskriterier

Aldre berettiget til at studere

  • Barn

Tager imod sunde frivillige

N/A

Prøveudtagningsmetode

Ikke-sandsynlighedsprøve

Studiebefolkning

Pre-adolescent football players enrolled in a youth football development programme in Bello, Antioquia, Colombia. Participants were recruited from the available programme roster using a non-probability, programme-based sample. The study included players from two chronological birth cohorts and classified them according to position within the annual selection year.

Beskrivelse

Inclusion Criteria:

  • Registered or actively participating in the selected youth football development programme in Bello, Colombia during the assessment period.
  • Date of birth available in the programme roster.
  • Able to undertake the football passing assessment.
  • Written parent or legal guardian consent and child assent.

Exclusion Criteria:

  • Acute injury, illness or medical restriction preventing safe completion of the LSPT [retain only if this was an actual criterion].
  • Unable to complete the required familiarisation or test procedure.
  • Missing date-of-birth information.
  • No valid LSPT trial available for inclusion in the primary analytical sample.

Studieplan

Dette afsnit indeholder detaljer om studieplanen, herunder hvordan undersøgelsen er designet, og hvad undersøgelsen måler.

Hvordan er undersøgelsen tilrettelagt?

Design detaljer

Kohorter og interventioner

Gruppe / kohorte
Group 1
Q1 - Players born from January to March
Group 2
Q2 - Players born from April to June
Group 3
Q3 - Players born from July to September
Group 4
Q4 - Players born from October to December

Hvad måler undersøgelsen?

Primære resultatmål

Resultatmål
Foranstaltningsbeskrivelse
Tidsramme
Mean LSPT total performance time
Tidsramme: Day 1
Mean of all available LSPT trial total performance times, expressed in seconds. For each trial, total performance time was calculated as movement time plus penalty time minus bonus time. Lower values indicate better performance.
Day 1
Number of participants in each relative-age quarter
Tidsramme: Baseline
Count of participants classified as Q1 (January-March), Q2 (April-June), Q3 (July-September) or Q4 (October-December), based on the date of birth recorded in the programme roster.
Baseline

Sekundære resultatmål

Resultatmål
Foranstaltningsbeskrivelse
Tidsramme
LSPT Trial 1 total performance time
Tidsramme: Day 1
Trial 1 movement time plus penalty time minus bonus time, expressed in seconds.
Day 1
Best LSPT total performance time
Tidsramme: Day 1
Lowest total performance time recorded across the participant's available LSPT trials, expressed in seconds. Two trials were scheduled five minutes apart.
Day 1
Number of participants in each relative-age semester
Tidsramme: Baseline
Count of participants classified as H1 (January-June) or H2 (July-December), based on the date of birth recorded in the programme roster.
Baseline
Difference between Trial 2 and Trial 1 total performance time
Tidsramme: Day 1
Trial 2 total performance time minus Trial 1 total performance time, expressed in seconds, among participants who completed both trials. The two trials were scheduled five minutes apart.
Day 1

Samarbejdspartnere og efterforskere

Det er her, du vil finde personer og organisationer, der er involveret i denne undersøgelse.

Sponsor

Federal University of Vicosa

Datoer for undersøgelser

Disse datoer sporer fremskridtene for indsendelser af undersøgelsesrekord og resumeresultater til ClinicalTrials.gov. Studieregistreringer og rapporterede resultater gennemgås af National Library of Medicine (NLM) for at sikre, at de opfylder specifikke kvalitetskontrolstandarder, før de offentliggøres på den offentlige hjemmeside.

Studer store datoer

Studiestart (Faktiske)

15. januar 2024

Primær færdiggørelse (Faktiske)

15. januar 2024

Studieafslutning (Faktiske)

20. marts 2024

Datoer for studieregistrering

Først indsendt

16. juli 2026

Først indsendt, der opfyldte QC-kriterier

21. juli 2026

Først opslået (Faktiske)

27. juli 2026

Opdateringer af undersøgelsesjournaler

Sidste opdatering sendt (Faktiske)

27. juli 2026

Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier

21. juli 2026

Sidst verificeret

1. juli 2026

Mere information

Begreber relateret til denne undersøgelse

Nøgleord

Andre undersøgelses-id-numre

  • RAE-LSPT-2017-01

Plan for individuelle deltagerdata (IPD)

Planlægger du at dele individuelle deltagerdata (IPD)?

JA

IPD-planbeskrivelse

The de-identified individual participant data underlying the results reported in the associated article will be made publicly available in Zenodo. The shared materials will include the participant-level analytical dataset, data dictionary, metadata, and reproducible analysis code. Names, identity-document numbers, exact dates of birth, contact information, and any participant re-identification key will not be shared. Data will become available when the Zenodo record is released, no later than publication of the primary article, and will remain available indefinitely under a Creative Commons Attribution 4.0 International licence. Access will be open and will not require submission or approval of a research proposal.

IPD-delingstidsramme

Data will be available from the public release of the Zenodo record, no later than publication of the primary article, and will remain available indefinitely.

IPD-delingsadgangskriterier

The data and supporting materials will be publicly accessible through Zenodo without the need for a formal request, research proposal, data-use agreement, or approval by the study investigators.

IPD-deling Understøttende informationstype

  • STUDY_PROTOCOL
  • SAP
  • ANALYTIC_CODE

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