Publicação
Characterization of speed fluctuation and drag force in young swimmers: A gender comparison
| Resumo: | The 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. |
|---|---|
| Autores principais: | Barbosa, Tiago M. |
| Outros Autores: | Costa, Mário J.; Morais, Jorge E.; Morouço, Pedro; Moreira, Marc; Garrido, Nuno D.; Marinho, Daniel A.; Silva, António J. |
| Assunto: | Front crawl Hydrodynamics Active drag Passive drag Kinematics Children |
| Ano: | 2013 |
| País: | Portugal |
| Tipo de documento: | artigo |
| Tipo de acesso: | acesso restrito |
| Instituição associada: | Universidade de Leiria e Oeste |
| Idioma: | inglês |
| Origem: | IC-online |
| _version_ | 1877756166766854144 |
|---|---|
| author | Barbosa, Tiago M. |
| author2 | Costa, Mário J. Morais, Jorge E. Morouço, Pedro Moreira, Marc Garrido, Nuno D. Marinho, Daniel A. Silva, António J. |
| author2_role | author author author author author author author |
| author_facet | Barbosa, Tiago M. Costa, Mário J. Morais, Jorge E. Morouço, Pedro Moreira, Marc Garrido, Nuno D. Marinho, Daniel A. Silva, António J. |
| author_role | author |
| contributor_name_str_mv | Repositório IC-Online |
| country_str | PT |
| creators_json_txt | [{\"Person.name\":\"Barbosa, Tiago M.\"},{\"Person.name\":\"Costa, Mário J.\"},{\"Person.name\":\"Morais, Jorge E.\"},{\"Person.name\":\"Morouço, Pedro\",\"Person.identifier.cienciaID\":\"F619-3996-742A\",\"Person.identifier.orcid\":\"0000-0002-5956-9790\",\"Person.identifier.researcherID\":\"K-9545-2013\",\"Person.identifier.researcherID\":\"K-9545-2013\",\"Person.identifier.scopusAuthorID\":\"24339135400\"},{\"Person.name\":\"Moreira, Marc\"},{\"Person.name\":\"Garrido, Nuno D.\"},{\"Person.name\":\"Marinho, Daniel A.\"},{\"Person.name\":\"Silva, António J.\"}] |
| datacite.contributors.contributor.contributorName.fl_str_mv | Repositório IC-Online |
| datacite.creators.creator.creatorName.fl_str_mv | Barbosa, Tiago M. Costa, Mário J. Morais, Jorge E. Morouço, Pedro Moreira, Marc Garrido, Nuno D. Marinho, Daniel A. Silva, António J. |
| datacite.date.Accepted.fl_str_mv | 2013-12-01T00:00:00Z |
| datacite.date.available.fl_str_mv | 2026-03-02T16:45:06Z |
| datacite.date.embargoed.fl_str_mv | 2026-03-02T16:45:06Z |
| datacite.rights.fl_str_mv | http://purl.org/coar/access_right/c_16ec |
| datacite.subjects.subject.fl_str_mv | Front crawl Hydrodynamics Active drag Passive drag Kinematics Children |
| datacite.titles.title.fl_str_mv | Characterization of speed fluctuation and drag force in young swimmers: A gender comparison |
| dc.contributor.none.fl_str_mv | Repositório IC-Online |
| dc.creator.none.fl_str_mv | Barbosa, Tiago M. Costa, Mário J. Morais, Jorge E. Morouço, Pedro Moreira, Marc Garrido, Nuno D. Marinho, Daniel A. Silva, António J. |
| dc.date.Accepted.fl_str_mv | 2013-12-01T00:00:00Z |
| dc.date.available.fl_str_mv | 2026-03-02T16:45:06Z |
| dc.date.embargoed.fl_str_mv | 2026-03-02T16:45:06Z |
| dc.format.none.fl_str_mv | application/pdf |
| dc.identifier.none.fl_str_mv | http://hdl.handle.net/10400.8/15759 |
| dc.language.none.fl_str_mv | eng |
| dc.publisher.none.fl_str_mv | Elsevier |
| dc.rights.cclincense.fl_str_mv | http://creativecommons.org/licenses/by-nc-nd/4.0/ |
| dc.rights.none.fl_str_mv | http://purl.org/coar/access_right/c_16ec |
| dc.subject.none.fl_str_mv | Front crawl Hydrodynamics Active drag Passive drag Kinematics Children |
| dc.title.fl_str_mv | Characterization of speed fluctuation and drag force in young swimmers: A gender comparison |
| dc.type.none.fl_str_mv | http://purl.org/coar/resource_type/c_6501 |
| description | The 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. |
| dirty | 0 |
| eu_rights_str_mv | restrictedAccess |
| format | article |
| fulltext.url.fl_str_mv | https://iconline.ulo.pt/bitstreams/8346467b-44c1-400b-a280-26611dc49b22/download |
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| identifier.url.fl_str_mv | http://hdl.handle.net/10400.8/15759 |
| inst_facet_str | urn:organizationAcronym:ulo{{{_:::_}}}Universidade de Leiria e Oeste |
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| institution | Universidade de Leiria e Oeste |
| instname_str | Universidade de Leiria e Oeste |
| language | eng |
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| oai_identifier_str | oai:iconline.ulo.pt:10400.8/15759 |
| organization_str_mv | urn:organizationAcronym:ulo |
| person_str_mv | Barbosa, Tiago M. Costa, Mário J. Morais, Jorge E. Morouço, Pedro Morouço, Pedro https://www.ciencia-id.pt/F619-3996-742A F619-3996-742A http://orcid.org/0000-0002-5956-9790 0000-0002-5956-9790 Moreira, Marc Garrido, Nuno D. Marinho, Daniel A. Silva, António J. |
| publishDate | 2013 |
| publisher.none.fl_str_mv | Elsevier |
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| spelling | engElsevierengThe 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.application/pdfengCharacterization of speed fluctuation and drag force in young swimmers: A gender comparisonBarbosa, Tiago M.Costa, Mário J.Morais, Jorge E.PersonalMorouço, PedroDSpacehttp://dspace.org/items/05b28d80-9e18-41cc-a66c-f37955bfc8daDSpacehttp://dspace.org/items/05b28d80-9e18-41cc-a66c-f37955bfc8daMorouçoPedroCiência IDhttps://www.ciencia-id.ptF619-3996-742AORCIDhttp://orcid.org0000-0002-5956-9790Researcher IDhttps://www.researcherid.comK-9545-2013Researcher IDhttps://www.researcherid.comK-9545-2013Scopus Author IDhttps://www.scopus.com24339135400Moreira, MarcGarrido, Nuno D.Marinho, Daniel A.Silva, António J.HostingInstitutionOrganizationalRepositório IC-Onlinee-mailmailto:repositorio@ulo.ptrepositorio@ulo.ptISSNIsPartOf0167-9457DOIIsPartOf10.1016/j.humov.2012.07.0092026-03-02T16:45:06Z2013-122013-12-01T00:00:00ZHandlehttp://hdl.handle.net/10400.8/15759http://purl.org/coar/access_right/c_16ecrestricted accessFront crawlHydrodynamicsActive dragPassive dragKinematicsChildren556388 bytesliteraturehttp://purl.org/coar/resource_type/c_6501journal article2013-12http://creativecommons.org/licenses/by-nc-nd/4.0/http://purl.org/coar/access_right/c_16ecapplication/pdffulltexthttps://iconline.ulo.pt/bitstreams/8346467b-44c1-400b-a280-26611dc49b22/download32612141225 |
| spellingShingle | Characterization of speed fluctuation and drag force in young swimmers: A gender comparison Barbosa, Tiago M. Front crawl Hydrodynamics Active drag Passive drag Kinematics Children |
| status | SINGLETON |
| subject.fl_str_mv | Front crawl Hydrodynamics Active drag Passive drag Kinematics Children |
| title | Characterization of speed fluctuation and drag force in young swimmers: A gender comparison |
| title_full | Characterization of speed fluctuation and drag force in young swimmers: A gender comparison |
| title_fullStr | Characterization of speed fluctuation and drag force in young swimmers: A gender comparison |
| title_full_unstemmed | Characterization of speed fluctuation and drag force in young swimmers: A gender comparison |
| title_short | Characterization of speed fluctuation and drag force in young swimmers: A gender comparison |
| title_sort | Characterization of speed fluctuation and drag force in young swimmers: A gender comparison |
| topic | Front crawl Hydrodynamics Active drag Passive drag Kinematics Children |
| topic_facet | Front crawl Hydrodynamics Active drag Passive drag Kinematics Children |
| url | http://hdl.handle.net/10400.8/15759 |
| visible | 1 |
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