Evidence map›Paper›PMID 34442114›Full record

ArticleHealthcare (Basel, Switzerland)2021

Intra-Season Variations in Workload Parameters in Europe's Elite Young Soccer Players: A Comparative Pilot Study between Starters and Non-Starters.

Alexandre D Martins, Rafael Oliveira, João P Brito, Nuno Loureiro, Sérgio M Querido, Hadi Nobari

Abstract read
In one paragraph

Article in Healthcare (Basel, Switzerland), 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 10 papers.

0numbers the graph read from it
0cells of the map it votes in
10citing 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

10 citing papers in PubMed.

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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

6 authors.

Alexandre D MartinsInstitute of Santarém, Sports Science School of Rio Maior-Polytechnic, 2140-413 Rio Maior, Portugal.ORCID 0000-0003-1524-5601
Rafael OliveiraInstitute of Santarém, Sports Science School of Rio Maior-Polytechnic, 2140-413 Rio Maior, Portugal.ORCID 0000-0001-6671-6229
João P BritoInstitute of Santarém, Sports Science School of Rio Maior-Polytechnic, 2140-413 Rio Maior, Portugal.ORCID 0000-0003-4357-4269
Nuno LoureiroInstitute of Santarém, Sports Science School of Rio Maior-Polytechnic, 2140-413 Rio Maior, Portugal.ORCID 0000-0002-6558-1956
Sérgio M QueridoFaculty of Human Kinetics, University of Lisbon, 1649-004 Lisbon, Portugal.ORCID 0000-0002-1750-5019
Hadi NobariDepartment of Physical Education and Sports, University of Granada, 18010 Granada, Spain.ORCID 0000-0001-7951-8977

Funding

Fundação para a Ciência e a Tecnologia UIDP/04748/2020
6 · The paper itself

Abstract

backgroundThe main purpose of the current study was to compare the within-season variations of workload, training duration, acute/chronic workload ratio (ACWR), training monotony ™, and training strain (TS) through session rating perceived exertion (s-RPE) between starters and non-starters.

methodsSeventeen under-17 European male soccer players (age, 16.2 ± 0.3 y, height, 1.8 ± 0.1 m; body mass, 66.5 ± 4.0 kg) divided in two groups: nine starters and eight non-starters, were evaluated over 50 weeks throughout the season.

resultsIn general, there were load variations for all players during the full-season. RPE tended to decrease during in-season and RPE, training duration and s-RPE did not present significant differences between starters and non-starters. TM and TS presented lower values for starters in mesocycle (M) 4 and M11 compared to non-starters. TS presented lower values for starters in M4 and M11 compared to non-starters, while in M10 a higher value was found for starters when compared to non-starters. ACWR showed differences between starters and non-starters in two of the mesocycles.

conclusionsThis study showed that some mesocycles provided higher load for non-starters. This information can alert coaches that non-starter players are likely to try too hard in training to demonstrate their abilities, leading to non-functional overreaching, overtraining syndrome, and then poor performance.

Indexed as

ACWRinternal loadmonitoringmonotonyperformanceyoung soccer

Identifiers

PMID34442114
PMCPMC8392320

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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.