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Physiological and physical effect on U-12 and U-15 football players, with the manipulation of task constraints: field size and goalkeeper in small-sided games of 4x4 players

2020-09-14Journal article Open access
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dc.contributor.authorSANTOS, FERNANDO JORGE LOURENÇO DOS
dc.contributor.authorFigueiredo, Teresa
dc.contributor.authorFerreira, Cátia
dc.contributor.authorEspada, Mário
dc.date.accessioned2021-11-15T21:34:19Z
dc.date.available2021-11-15T21:34:19Z
dc.date.issued2020-09-14
dc.description.abstractOur study aimed to verify whether the task constraints manipulation has different effects according to age group. Another objective was to verify the physiological and physical responses in the different formats of small-sided games (SSG). Each team in the SSGs was composed of 4 players (4x4). The participants in the research were young football players U-12 (n=8) and U-15 (n=8), affiliated with a club certified as a training entity, and competing, respectively, in the 7 and 9-a-side regional football championships and the national championship of Portugal. The internal and external load data was collected in 5 formats of SSGs with three field sizes and in 2 used goalkeepers. We used the WIMU PROTM inertial device for data collection. The registration of the internal charge, using heart rate (HR), was performed with the use by the players of Garmin bands, which send the data to WIMU PROTM devices, through of Ant+ technology. The variance analysis (ANOVA) was used to verify the differences between SSGs and the effect size was determined by calculating partial eta-square . Comparisons between the two age groups were evaluated using standardized differences with combined variance(Cohen’s d). The results show that the manipulation of the playing areas and the use of goalkeepers participation promoted different effects in the two age groups in terms of distance, explosive distance, accelerations/decelerations and maximum sprint. As for the comparison between SSGs we found differences in the level of external load (distance, accelerations/ decelerations and maximum sprint). At the level of internal load, the effects were more evident with field areas above 100m2. We can conclude that the task constraints manipulation, playing area and goalkeeper participation, promote different physical and physiological responses, and the coach should consider this fact, as well as the effects promoted in the age groups.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.doi10.5232/ricyde2021.06302pt_PT
dc.identifier.issn1995-3137
dc.identifier.urihttp://hdl.handle.net/10400.15/3725
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherRevista Internacional de Ciencias del Deportept_PT
dc.subjectjuegos reducidos y acondicionadospt_PT
dc.subjectrestricciones de tareaspt_PT
dc.subjectcontrol de carga externapt_PT
dc.subjectcontrol de carga internapt_PT
dc.subjectfútbol juvenilpt_PT
dc.titlePhysiological and physical effect on U-12 and U-15 football players, with the manipulation of task constraints: field size and goalkeeper in small-sided games of 4x4 playerspt_PT
dc.title.alternativeEfecto fisiológico y físico en los jugadores de fútbol Sub-12 y Sub-15, con la manipulación de las restricciones de tareas: tamaño de campo y portero en juegos reducidos de jugadores 4x4pt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.citation.endPage24pt_PT
oaire.citation.issue63pt_PT
oaire.citation.startPage13pt_PT
oaire.citation.titleRevista Internacional de Ciencias del Deportept_PT
oaire.citation.volume16pt_PT
person.familyNameSantos
person.givenNameFernando Jorge Lourenço
person.identifier669103
person.identifier.ciencia-idDD10-36B5-7F3D
person.identifier.orcid0000-0002-1356-7853
person.identifier.ridY-7985-2018
person.identifier.scopus-author-id55348391900
rcaap.rightsopenAccesspt_PT
rcaap.typearticlept_PT
relation.isAuthorOfPublication0f4c2085-50eb-4d05-b042-87f0917ebd6a
relation.isAuthorOfPublication.latestForDiscovery0f4c2085-50eb-4d05-b042-87f0917ebd6a

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