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Measurement of the active drag coefficient in front-crawl: a stroke-by-stroke analysis

2024Journal article Open access
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dc.contributor.authorMorais, J.E.
dc.contributor.authorMarinho, D.A.
dc.contributor.authorBarbosa, Tiago M.
dc.date.accessioned2024-02-27T11:00:37Z
dc.date.available2024-02-27T11:00:37Z
dc.date.issued2024
dc.description.abstractThe purpose of this study was to understand the change in active drag coefficient (CDA) over successive stroke cycles in front-crawl and the relationship between swimming speed and CDA. Eighteen national competitive swimmers (nine girls and nine boys with a mean age of 14.91 ± 0.59 years) were recruited. Swimming speed, propulsion (Ftotal) and frontal surface area were measured to calculate the CDA. Swimming speed (F = 1.790, p = 0.182, η2 = 0.07) and CDA (F = 0.907, p = 0.413, η2 = 0.06) did not change significantly over time, but swimming speed showed a decrease between the second and third stroke cycle. On the other hand, the Ftotal changed significantly over time (F = 4.437, p = 0.019, η2 = 0.21). Swimming speed and CDA showed a linear and strong relationship (R2 = 63.8 %). A stroke-by-stroke analysis showed that national level swimmers were able to maintain their hydrodynamic profile during a front-crawl maximal trial. Thus, it can be argued that a decrease in swimming speed can be related to a decrease in Ftotal. Swimming speed and CDA showed an inverse and significant relationship, with lower values of CDA resulting in faster swimming speeds.pt_PT
dc.description.sponsorshipThis work is supported by national funds (FCT - Portuguese Foundation for Science and Technology) under the project UIDB/DTP/04045/2020.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationMorais, J.E.; Marinho, Daniel A.; Barbosa, Tiago M. (2024). Measurement of the active drag coefficient in front-crawl: a stroke-by-stroke analysis. Journal of Biomechanics. ISSN 0021-9290. 164, p. 1-5pt_PT
dc.identifier.doi10.1016/j.jbiomech.2024.111993pt_PT
dc.identifier.eissn1873-2380
dc.identifier.urihttp://hdl.handle.net/10198/29592
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherElsevierpt_PT
dc.relationResearch Center in Sports Sciences, Health and Human Development
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/pt_PT
dc.subjectSwimmingpt_PT
dc.subjectHydrodynamicspt_PT
dc.subjectTechniquept_PT
dc.subjectTrainingpt_PT
dc.subjectPerformancept_PT
dc.titleMeasurement of the active drag coefficient in front-crawl: a stroke-by-stroke analysispt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.awardTitleResearch Center in Sports Sciences, Health and Human Development
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDB%2F04045%2F2020/PT
oaire.citation.startPage111993pt_PT
oaire.citation.titleJournal of Biomechanicspt_PT
oaire.citation.volume164pt_PT
oaire.fundingStream6817 - DCRRNI ID
person.familyNameMorais
person.familyNameBarbosa
person.givenNameJ. E.
person.givenNameTiago M.
person.identifier867179
person.identifier.ciencia-idAA12-BF58-EE60
person.identifier.ciencia-id8B11-BDC4-F6FF
person.identifier.orcid0000-0002-6885-0648
person.identifier.orcid0000-0001-7071-2116
person.identifier.scopus-author-id10044856400
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.nameFundação para a Ciência e a Tecnologia
rcaap.rightsopenAccesspt_PT
rcaap.typearticlept_PT
relation.isAuthorOfPublication80b13e62-254d-4d46-ad90-8b509ab523a8
relation.isAuthorOfPublication941a6f14-cfba-458a-a2e3-0cbd1846cd42
relation.isAuthorOfPublication.latestForDiscovery80b13e62-254d-4d46-ad90-8b509ab523a8
relation.isProjectOfPublicationb305d97a-cacc-41ea-9c2b-e6554b5ee167
relation.isProjectOfPublication.latestForDiscoveryb305d97a-cacc-41ea-9c2b-e6554b5ee167

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