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Characterization of speed fluctuation and drag force in young swimmers: A gender comparison

2013-12Artigo científico Acesso restrito
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datacite.subject.fosCiências Médicas::Ciências da Saúde
datacite.subject.sdg04:Educação de Qualidade
datacite.subject.sdg05:Igualdade de Género
datacite.subject.sdg10:Reduzir as Desigualdades
dc.contributor.authorBarbosa, Tiago M.
dc.contributor.authorCosta, Mário J.
dc.contributor.authorMorais, Jorge E.
dc.contributor.authorMorouço, Pedro
dc.contributor.authorMoreira, Marc
dc.contributor.authorGarrido, Nuno D.
dc.contributor.authorMarinho, Daniel A.
dc.contributor.authorSilva, António J.
dc.date.accessioned2026-03-02T16:45:06Z
dc.date.available2026-03-02T16:45:06Z
dc.date.issued2013-12
dc.description.abstractThe aim of this study was to compare the speed fluctuation and the drag force in young swimmers between genders. Twenty-three young pubertal swimmers (12 boys and 11 girls) volunteered as subjects. Speed fluctuation was measured using a kinematical mechanical method (i.e., speedo-meter) during a maximal 25-m front crawl bout. Active drag, active drag coefficient and power needed to overcome drag were measured with the velocity perturbation method for another two maximal 25 m front crawl bouts with and without the perturbation device. Passive drag and the passive drag coefficient were estimated using the gliding decay velocity method after a maximal push-off from the wall while being fully immersed. The technique drag index was also assessed as a ratio between active and passive drag. Boys presented meaningfully higher speed fluctuation, active drag, power needed to overcome drag and technique drag index than the girls. There were no significant gender differences for active drag coefficient, passive drag and passive drag oefficient. There were positive and moderate-strong associations between active drag and speed fluctuation when controlling the effects of swim velocity. So, increasing speed fluctuation leads to higher drag force values and those are even higher for boys than for girls.eng
dc.description.sponsorshipThe authors wish to thanks Jean Erik Mejias, Sérgio Jesus and Welligton Feitosa for their useful help during data collection.
dc.identifier.citationTiago M. Barbosa, Mário J. Costa, Jorge E. Morais, Pedro Morouço, Marc Moreira, Nuno D. Garrido, Daniel A. Marinho, António J. Silva, Characterization of speed fluctuation and drag force in young swimmers: A gender comparison, Human Movement Science, Volume 32, Issue 6, 2013, Pages 1214-1225, ISSN 0167-9457, https://doi.org/10.1016/j.humov.2012.07.009.
dc.identifier.doi10.1016/j.humov.2012.07.009
dc.identifier.issn0167-9457
dc.identifier.urihttp://hdl.handle.net/10400.8/15759
dc.language.isoeng
dc.peerreviewedyes
dc.publisherElsevier
dc.relation.ispartofHuman Movement Science
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/
dc.subjectFront crawl
dc.subjectHydrodynamics
dc.subjectActive drag
dc.subjectPassive drag
dc.subjectKinematics
dc.subjectChildren
dc.titleCharacterization of speed fluctuation and drag force in young swimmers: A gender comparisoneng
dc.typejournal article
dspace.entity.typePublication
oaire.citation.endPage1225
oaire.citation.issue6
oaire.citation.startPage1214
oaire.citation.volume32
oaire.versionhttp://purl.org/coar/version/c_970fb48d4fbd8a85
person.familyNameMorouço
person.givenNamePedro
person.identifier435983
person.identifier.ciencia-idF619-3996-742A
person.identifier.orcid0000-0002-5956-9790
person.identifier.ridK-9545-2013
person.identifier.scopus-author-id24339135400
relation.isAuthorOfPublication05b28d80-9e18-41cc-a66c-f37955bfc8da
relation.isAuthorOfPublication.latestForDiscovery05b28d80-9e18-41cc-a66c-f37955bfc8da

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