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Skillful swimming in age-groups is determined by anthropometrics, biomechanics and energetics

2019Journal article Open access
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dc.contributor.authorBarbosa, Tiago M.
dc.contributor.authorBartolomeu, Raúl Filipe
dc.contributor.authorMorais, J.E.
dc.contributor.authorCosta, M.J.
dc.date.accessioned2019-03-20T11:46:42Z
dc.date.available2019-03-20T11:46:42Z
dc.date.issued2019
dc.descriptionThis work was supported by the national funding through the Portuguese Foundation for Science and Technology, I.P., under the project UID/DTP/04045/2019, and European Regional Development Fund (FEDER) under the COMPETE 2020 Programme for Competitiveness and Internationalization (POCI) (POCI-01-0145-FEDER-006969). RB is an FCT-Ph.D. scholar (SFRH/BD/142009/2018).pt_PT
dc.description.abstractThe aim was to compare the anthropometrics, biomechanics and energetics in young swimmers of different competitive levels. Seventy-five boys aged between 11 and 13 years-old with a broad range of performances were ranked based on their personal best time in the men’s 100m freestyle event and then split-up into three tiers (Tier-1, i.e., top-tier, best performers; Tier-2, mid-tier; Tier-3, lower-tier). A set of anthropometric features was measured (height, body mass, arm span and trunk transverse surface area). Stroke kinematics (speed, stroke length, stroke frequency) was assessed by a Speedo-meter. Swim efficiency was then estimated (stroke index, speed fluctuation, Froude efficiency). Hydrodynamics assessment encompassed the estimation of active drag and drag coefficient by velocity perturbation method and a set of dimensionless numbers (Froude, hull speed, Reynolds). Mechanical power (to overcome drag, transfer of kinetic energy to water, external power) and power input were derived. There was a significant variation with moderate effect sizes in all anthropometric features but the trunk transverse surface area. Tier-1 swimmers were taller, heavier and with longer limbs than remaining counterparts. There were also significant variations in the stroke kinematics with moderate-large effect sizes. Tier-1 swimmers showed higher stroke frequency, stroke length, speed, stroke index and propelling efficiency but lower speed fluctuations. Reynold number, Froude number and hull speed were significantly higher in Tier-1 swimmers, denoting large effect sizes. The mechanical power and power input delivered were significantly higher in tier-1 swimmers, showing moderate effect sizes. As a conclusion, it was noted significant variations, with moderate-large effect sizes, among the three tiers, for the vast majority of the selected variables. The better performances by tier-1 swimmers were related to their anthropometrics, biomechanics and energetics.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationBarbosa, Tiago M.; Bartolomeu, Raúl Filipe; Morais, J.E.; Costa, M.J. (2019). Skillful swimming in age-groups is determined by anthropometrics, biomechanics and energetics. Frontiers in Physiology. ISSN 1664-042X. 10:73pt_PT
dc.identifier.doi10.3389/fphys.2019.00073pt_PT
dc.identifier.urihttp://hdl.handle.net/10198/19171
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherFrontiers Mediapt_PT
dc.relationResearch Center in Sports Sciences, Health Sciences and Human Development
dc.relationInterações entre parâmetros não-lineares e fatores determinantes da performance em natação pura
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/pt_PT
dc.subjectSwim strokept_PT
dc.subjectEfficiencypt_PT
dc.subjectHydrodynamicspt_PT
dc.subjectMechanical powerpt_PT
dc.subjectPower inputpt_PT
dc.subjectYouth sportspt_PT
dc.titleSkillful swimming in age-groups is determined by anthropometrics, biomechanics and energeticspt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.awardTitleResearch Center in Sports Sciences, Health Sciences and Human Development
oaire.awardTitleInterações entre parâmetros não-lineares e fatores determinantes da performance em natação pura
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UID%2FDTP%2F04045%2F2019/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/POR_NORTE/SFRH%2FBD%2F142009%2F2018/PT
oaire.citation.issue73pt_PT
oaire.citation.titleFrontiers in Physiologypt_PT
oaire.citation.volume10pt_PT
oaire.fundingStream6817 - DCRRNI ID
oaire.fundingStreamPOR_NORTE
person.familyNameBarbosa
person.familyNameMorais
person.givenNameTiago M.
person.givenNameJ. E.
person.identifier867179
person.identifier.ciencia-id8B11-BDC4-F6FF
person.identifier.ciencia-idAA12-BF58-EE60
person.identifier.orcid0000-0001-7071-2116
person.identifier.orcid0000-0002-6885-0648
person.identifier.scopus-author-id10044856400
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.nameFundação para a Ciência e a Tecnologia
project.funder.nameFundação para a Ciência e a Tecnologia
rcaap.rightsopenAccesspt_PT
rcaap.typearticlept_PT
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relation.isAuthorOfPublication80b13e62-254d-4d46-ad90-8b509ab523a8
relation.isAuthorOfPublication.latestForDiscovery941a6f14-cfba-458a-a2e3-0cbd1846cd42
relation.isProjectOfPublication512ae2d1-6c8e-4a0e-bbdb-aeb577811865
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