Young swimmers' classification based on kinematics, hydrodynamics, and anthropometrics
Autor(a) principal: | |
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Data de Publicação: | 2014 |
Outros Autores: | , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
Texto Completo: | http://hdl.handle.net/10198/11617 |
Resumo: | The aim of this article has been to classify swimmers based on kinematics, hydrodynamics, and anthropometrics. Sixty-seven young swimmers made a maximal 25 m front-crawl to measure with a speedometer the swimming velocity (v), speed-fluctuation (dv) and dv normalized to v (dv/v). Another two 25 m bouts with and without carrying a perturbation device were made to esti- mate active drag coefficient (CDa). Trunk transverse surface area (S) was measured with photogrammetric technique on land and in the hydrodynamic position. Cluster 1 was related to swimmers with a high speed fluctuation (ie, dv and dv/v), cluster 2 with anthropometrics (ie, S) and cluster 3 with a high hydrodynamic profile (ie, CDa). The variable that seems to discriminate better the clusters was the dv/v (F = 53.680; P < .001), followed by the dv (F = 28.506; P < .001), CDa (F = 21.025; P < .001), S (F = 6.297; P < .01) and v (F = 5.375; P = .01). Stepwise discriminant analysis extracted 2 functions: Function 1 was mainly defined by dv/v and S (74.3% of variance), whereas function 2 was mainly defined by CDa (25.7% of variance). It can be concluded that kinematics, hydrodynamics and anthropometrics are determinant domains in which to classify and characterize young swim- mers’ profiles. |
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Young swimmers' classification based on kinematics, hydrodynamics, and anthropometricsSwimmingKinematicsHydrodynamicsAnthropometricsClassificationThe aim of this article has been to classify swimmers based on kinematics, hydrodynamics, and anthropometrics. Sixty-seven young swimmers made a maximal 25 m front-crawl to measure with a speedometer the swimming velocity (v), speed-fluctuation (dv) and dv normalized to v (dv/v). Another two 25 m bouts with and without carrying a perturbation device were made to esti- mate active drag coefficient (CDa). Trunk transverse surface area (S) was measured with photogrammetric technique on land and in the hydrodynamic position. Cluster 1 was related to swimmers with a high speed fluctuation (ie, dv and dv/v), cluster 2 with anthropometrics (ie, S) and cluster 3 with a high hydrodynamic profile (ie, CDa). The variable that seems to discriminate better the clusters was the dv/v (F = 53.680; P < .001), followed by the dv (F = 28.506; P < .001), CDa (F = 21.025; P < .001), S (F = 6.297; P < .01) and v (F = 5.375; P = .01). Stepwise discriminant analysis extracted 2 functions: Function 1 was mainly defined by dv/v and S (74.3% of variance), whereas function 2 was mainly defined by CDa (25.7% of variance). It can be concluded that kinematics, hydrodynamics and anthropometrics are determinant domains in which to classify and characterize young swim- mers’ profiles.Human Kinetics PublishersBiblioteca Digital do IPBBarbosa, Tiago M.Morais, J.E.Costa, M.J.Gonçalves, JoséMarinho, D.A.Silva, A.J.2015-01-21T15:26:45Z20142014-01-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10198/11617engBarbosa, Tiago M.; Morais, J.E.; Costa, M.J.; Gonçalves, J.; Marinho, D.A.; Silva, A.J. (2014). Young swimmers' classification based on kinematics, hydrodynamics, and anthropometrics. Journal of Applied Biomechanics. ISSN 1065-8483. 30:2, p. 310-3151065-848310.1123/jab.2013-0038info:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2023-11-21T10:27:00Zoai:bibliotecadigital.ipb.pt:10198/11617Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T23:02:01.754061Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse |
dc.title.none.fl_str_mv |
Young swimmers' classification based on kinematics, hydrodynamics, and anthropometrics |
title |
Young swimmers' classification based on kinematics, hydrodynamics, and anthropometrics |
spellingShingle |
Young swimmers' classification based on kinematics, hydrodynamics, and anthropometrics Barbosa, Tiago M. Swimming Kinematics Hydrodynamics Anthropometrics Classification |
title_short |
Young swimmers' classification based on kinematics, hydrodynamics, and anthropometrics |
title_full |
Young swimmers' classification based on kinematics, hydrodynamics, and anthropometrics |
title_fullStr |
Young swimmers' classification based on kinematics, hydrodynamics, and anthropometrics |
title_full_unstemmed |
Young swimmers' classification based on kinematics, hydrodynamics, and anthropometrics |
title_sort |
Young swimmers' classification based on kinematics, hydrodynamics, and anthropometrics |
author |
Barbosa, Tiago M. |
author_facet |
Barbosa, Tiago M. Morais, J.E. Costa, M.J. Gonçalves, José Marinho, D.A. Silva, A.J. |
author_role |
author |
author2 |
Morais, J.E. Costa, M.J. Gonçalves, José Marinho, D.A. Silva, A.J. |
author2_role |
author author author author author |
dc.contributor.none.fl_str_mv |
Biblioteca Digital do IPB |
dc.contributor.author.fl_str_mv |
Barbosa, Tiago M. Morais, J.E. Costa, M.J. Gonçalves, José Marinho, D.A. Silva, A.J. |
dc.subject.por.fl_str_mv |
Swimming Kinematics Hydrodynamics Anthropometrics Classification |
topic |
Swimming Kinematics Hydrodynamics Anthropometrics Classification |
description |
The aim of this article has been to classify swimmers based on kinematics, hydrodynamics, and anthropometrics. Sixty-seven young swimmers made a maximal 25 m front-crawl to measure with a speedometer the swimming velocity (v), speed-fluctuation (dv) and dv normalized to v (dv/v). Another two 25 m bouts with and without carrying a perturbation device were made to esti- mate active drag coefficient (CDa). Trunk transverse surface area (S) was measured with photogrammetric technique on land and in the hydrodynamic position. Cluster 1 was related to swimmers with a high speed fluctuation (ie, dv and dv/v), cluster 2 with anthropometrics (ie, S) and cluster 3 with a high hydrodynamic profile (ie, CDa). The variable that seems to discriminate better the clusters was the dv/v (F = 53.680; P < .001), followed by the dv (F = 28.506; P < .001), CDa (F = 21.025; P < .001), S (F = 6.297; P < .01) and v (F = 5.375; P = .01). Stepwise discriminant analysis extracted 2 functions: Function 1 was mainly defined by dv/v and S (74.3% of variance), whereas function 2 was mainly defined by CDa (25.7% of variance). It can be concluded that kinematics, hydrodynamics and anthropometrics are determinant domains in which to classify and characterize young swim- mers’ profiles. |
publishDate |
2014 |
dc.date.none.fl_str_mv |
2014 2014-01-01T00:00:00Z 2015-01-21T15:26:45Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://hdl.handle.net/10198/11617 |
url |
http://hdl.handle.net/10198/11617 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Barbosa, Tiago M.; Morais, J.E.; Costa, M.J.; Gonçalves, J.; Marinho, D.A.; Silva, A.J. (2014). Young swimmers' classification based on kinematics, hydrodynamics, and anthropometrics. Journal of Applied Biomechanics. ISSN 1065-8483. 30:2, p. 310-315 1065-8483 10.1123/jab.2013-0038 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
Human Kinetics Publishers |
publisher.none.fl_str_mv |
Human Kinetics Publishers |
dc.source.none.fl_str_mv |
reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação instacron:RCAAP |
instname_str |
Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
instacron_str |
RCAAP |
institution |
RCAAP |
reponame_str |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
collection |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
repository.name.fl_str_mv |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
repository.mail.fl_str_mv |
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1817550344613265408 |