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Anaerobic Threshold Biophysical Characterisation of the Four Swimming Techniques

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Summary:The anaerobic threshold (AnT) seems to be not only a physiologic boundary but also a transition after which swimmers technique changes, modifying their biomechanical behaviour. We expanded the AnT concept to a biophysical construct in the four conventional swimming techniques. Seventy-two elite swimmers performed a 5×200 m incremental protocol in their preferred swimming technique (with a 0.05 m·s-1 increase and a 30 s interval between steps). A capillary blood samples were collected from the fingertip and stroke rate (SR) and length (SL) determined for the assessment of [La], SR and SL vs. velocity inflexion points (using the interception of a pair of linear and exponential regression curves). The [La] values at the AnT were 3.3±1.0, 3.9±1.1, 2.9±1 .34 and 4.5±1.4 mmol·l-1 (mean±SD) for front crawl, backstroke, breaststroke and butterfly, and its corresponding velocity correlated highly with those at SR and SL inflection points (r=0.91-0.99, p<0.001). The agreement analyses confirmed that AnT represents a biophysical boundary in the four competitive swimming techniques and can be determined individually using [La] and/or SR/SL. Blood lactate increase speed can help characterise swimmers' anaerobic behaviour after AnT and between competitive swimming techniques.
Main Authors:Carvalho, Diogo Duarte
Other Authors:Soares, Susana; Zacca, R; Sousa, João; Marinho, Daniel; Silva, António; Vilas Boas, J. Paulo; Fernandes, Ricardo J.
Subject:Physiology Biomechanics Biophysics Anaerobic threshold Elite swimmers
Year:2020
Country:Portugal
Document type:article
Access type:open access
Associated institution:Universidade da Beira Interior
Language:English
Origin:uBibliorum
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author Carvalho, Diogo Duarte
author2 Soares, Susana
Zacca, R
Sousa, João
Marinho, Daniel
Silva, António
Vilas Boas, J. Paulo
Fernandes, Ricardo J.
author2_role author
author
author
author
author
author
author
author_facet Carvalho, Diogo Duarte
Soares, Susana
Zacca, R
Sousa, João
Marinho, Daniel
Silva, António
Vilas Boas, J. Paulo
Fernandes, Ricardo J.
author_role author
contributor_name_str_mv uBibliorum
country_str PT
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datacite.creators.creator.creatorName.fl_str_mv Carvalho, Diogo Duarte
Soares, Susana
Zacca, R
Sousa, João
Marinho, Daniel
Silva, António
Vilas Boas, J. Paulo
Fernandes, Ricardo J.
datacite.date.Accepted.fl_str_mv 2020-01-01T00:00:00Z
datacite.date.available.fl_str_mv 2020-02-10T16:45:38Z
datacite.date.embargoed.fl_str_mv 2020-02-10T16:45:38Z
datacite.rights.fl_str_mv http://purl.org/coar/access_right/c_abf2
datacite.subjects.subject.fl_str_mv Physiology
Biomechanics
Biophysics
Anaerobic threshold
Elite swimmers
datacite.titles.title.fl_str_mv Anaerobic Threshold Biophysical Characterisation of the Four Swimming Techniques
dc.contributor.none.fl_str_mv uBibliorum
dc.creator.none.fl_str_mv Carvalho, Diogo Duarte
Soares, Susana
Zacca, R
Sousa, João
Marinho, Daniel
Silva, António
Vilas Boas, J. Paulo
Fernandes, Ricardo J.
dc.date.Accepted.fl_str_mv 2020-01-01T00:00:00Z
dc.date.available.fl_str_mv 2020-02-10T16:45:38Z
dc.date.embargoed.fl_str_mv 2020-02-10T16:45:38Z
dc.format.none.fl_str_mv application/pdf
dc.identifier.none.fl_str_mv http://hdl.handle.net/10400.6/9194
dc.language.none.fl_str_mv eng
dc.rights.none.fl_str_mv http://purl.org/coar/access_right/c_abf2
dc.subject.none.fl_str_mv Physiology
Biomechanics
Biophysics
Anaerobic threshold
Elite swimmers
dc.title.fl_str_mv Anaerobic Threshold Biophysical Characterisation of the Four Swimming Techniques
dc.type.none.fl_str_mv http://purl.org/coar/resource_type/c_6501
description The anaerobic threshold (AnT) seems to be not only a physiologic boundary but also a transition after which swimmers technique changes, modifying their biomechanical behaviour. We expanded the AnT concept to a biophysical construct in the four conventional swimming techniques. Seventy-two elite swimmers performed a 5×200 m incremental protocol in their preferred swimming technique (with a 0.05 m·s-1 increase and a 30 s interval between steps). A capillary blood samples were collected from the fingertip and stroke rate (SR) and length (SL) determined for the assessment of [La], SR and SL vs. velocity inflexion points (using the interception of a pair of linear and exponential regression curves). The [La] values at the AnT were 3.3±1.0, 3.9±1.1, 2.9±1 .34 and 4.5±1.4 mmol·l-1 (mean±SD) for front crawl, backstroke, breaststroke and butterfly, and its corresponding velocity correlated highly with those at SR and SL inflection points (r=0.91-0.99, p<0.001). The agreement analyses confirmed that AnT represents a biophysical boundary in the four competitive swimming techniques and can be determined individually using [La] and/or SR/SL. Blood lactate increase speed can help characterise swimmers' anaerobic behaviour after AnT and between competitive swimming techniques.
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funding.name_str_mv POR_NORTE
6817 - DCRRNI ID
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person_str_mv Carvalho, Diogo Duarte
Carvalho, Diogo Duarte
https://www.ciencia-id.pt/7A1F-8EA4-409C
7A1F-8EA4-409C
http://orcid.org/0000-0001-8871-5614
0000-0001-8871-5614
Soares, Susana
Soares, Susana
https://www.ciencia-id.pt/C118-BA75-9A73
C118-BA75-9A73
http://orcid.org/0000-0002-8313-8181
0000-0002-8313-8181
Zacca, R
Zacca, R
https://www.ciencia-id.pt/4116-A8F9-505C
4116-A8F9-505C
http://orcid.org/0000-0003-0494-0000
0000-0003-0494-0000
Sousa, João
Marinho, Daniel
Marinho, Daniel
https://www.ciencia-id.pt/471B-F3CC-479A
471B-F3CC-479A
http://orcid.org/0000-0003-2351-3047
0000-0003-2351-3047
Silva, António
Silva, António
https://www.ciencia-id.pt/8C15-83CB-5566
8C15-83CB-5566
http://orcid.org/0000-0001-5790-5116
0000-0001-5790-5116
Vilas Boas, J. Paulo
Vilas Boas, J. Paulo
https://www.ciencia-id.pt/0D18-D46F-09A1
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http://orcid.org/0000-0002-4109-2939
0000-0002-4109-2939
Fernandes, Ricardo J.
Fernandes, Ricardo J.
http://orcid.org/0000-0002-5811-0443
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publishDate 2020
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spelling engpt_PTThe anaerobic threshold (AnT) seems to be not only a physiologic boundary but also a transition after which swimmers technique changes, modifying their biomechanical behaviour. We expanded the AnT concept to a biophysical construct in the four conventional swimming techniques. Seventy-two elite swimmers performed a 5×200 m incremental protocol in their preferred swimming technique (with a 0.05 m·s-1 increase and a 30 s interval between steps). A capillary blood samples were collected from the fingertip and stroke rate (SR) and length (SL) determined for the assessment of [La], SR and SL vs. velocity inflexion points (using the interception of a pair of linear and exponential regression curves). The [La] values at the AnT were 3.3±1.0, 3.9±1.1, 2.9±1 .34 and 4.5±1.4 mmol·l-1 (mean±SD) for front crawl, backstroke, breaststroke and butterfly, and its corresponding velocity correlated highly with those at SR and SL inflection points (r=0.91-0.99, p<0.001). The agreement analyses confirmed that AnT represents a biophysical boundary in the four competitive swimming techniques and can be determined individually using [La] and/or SR/SL. Blood lactate increase speed can help characterise swimmers' anaerobic behaviour after AnT and between competitive swimming techniques.application/pdfpt_PTAnaerobic Threshold Biophysical Characterisation of the Four Swimming TechniquesPersonalCarvalho, Diogo DuarteDSpacehttp://dspace.org/items/1d23f69b-c889-4f60-bfce-462548d6014cDSpacehttp://dspace.org/items/1d23f69b-c889-4f60-bfce-462548d6014cDuarte CarvalhoDiogo AntónioCiência IDhttps://www.ciencia-id.pt7A1F-8EA4-409CORCIDhttp://orcid.org0000-0001-8871-5614Scopus Author IDhttps://www.scopus.com57212341663PersonalSoares, SusanaDSpacehttp://dspace.org/items/82983d77-fb5d-483a-a62d-9ff46d8f6347DSpacehttp://dspace.org/items/82983d77-fb5d-483a-a62d-9ff46d8f6347SoaresSusanaCiência IDhttps://www.ciencia-id.ptC118-BA75-9A73ORCIDhttp://orcid.org0000-0002-8313-8181PersonalZacca, RDSpacehttp://dspace.org/items/5cac3f9b-16a2-4bf4-bd9d-0434c64ac862DSpacehttp://dspace.org/items/5cac3f9b-16a2-4bf4-bd9d-0434c64ac862ZaccaRodrigoCiência IDhttps://www.ciencia-id.pt4116-A8F9-505CORCIDhttp://orcid.org0000-0003-0494-0000Scopus Author IDhttps://www.scopus.com35800369300Sousa, JoãoPersonalMarinho, DanielDSpacehttp://dspace.org/items/1b7a1cda-cf15-4686-bb08-1ac47b66b314DSpacehttp://dspace.org/items/1b7a1cda-cf15-4686-bb08-1ac47b66b314MarinhoDanielCiência IDhttps://www.ciencia-id.pt471B-F3CC-479AORCIDhttp://orcid.org0000-0003-2351-3047Scopus Author IDhttps://www.scopus.com15022568500PersonalSilva, AntónioDSpacehttp://dspace.org/items/f83dec25-3fd3-4490-843d-805a431ee258DSpacehttp://dspace.org/items/f83dec25-3fd3-4490-843d-805a431ee258SilvaAntónioCiência IDhttps://www.ciencia-id.pt8C15-83CB-5566ORCIDhttp://orcid.org0000-0001-5790-5116Scopus Author IDhttps://www.scopus.com13410238400Scopus Author IDhttps://www.scopus.com56553599600PersonalVilas Boas, J. PauloDSpacehttp://dspace.org/items/66d9e3f3-ab73-45ef-b401-571284df3553DSpacehttp://dspace.org/items/66d9e3f3-ab73-45ef-b401-571284df3553Vilas-BoasJ. PauloCiência IDhttps://www.ciencia-id.pt0D18-D46F-09A1ORCIDhttp://orcid.org0000-0002-4109-2939Scopus Author IDhttps://www.scopus.com26424846800PersonalFernandes, Ricardo J.DSpacehttp://dspace.org/items/e2a64a7b-a6b0-434a-b3d7-72f41b9f3866DSpacehttp://dspace.org/items/e2a64a7b-a6b0-434a-b3d7-72f41b9f3866FernandesRicardo J.ORCIDhttp://orcid.org0000-0002-5811-0443HostingInstitutionOrganizationaluBibliorume-mailmailto:noreplyuBibliorum@ubi.ptnoreplyuBibliorum@ubi.ptDOIIsPartOf10.1055/a-0975-95322020-02-10T16:45:38Z20202020-01-01T00:00:00ZHandlehttp://hdl.handle.net/10400.6/9194http://purl.org/coar/access_right/c_abf2open accessPhysiologyBiomechanicsBiophysicsAnaerobic thresholdElite swimmers870088 bytesFundação para a Ciência e a TecnologiaBolsa de Doutoramento FCT: Training control and swimmers evaluation during and after Tokyo 2020 Olympic cycle, performance and health concerns [SFRH/BD/138876/2018]info:eu-repo/grantAgreement/FCT/POR_NORTE/SFRH%2FBD%2F138876%2F2018/PTSFRH/BD/138876/2018POR_NORTECrossref Funder IDhttp://doi.org/10.13039/501100001871Fundação para a Ciência e a TecnologiaResearch Center in Sports Sciences, Health Sciences and Human Development [UID/DTP/04045/2019]info:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UID%2FDTP%2F04045%2F2019/PTUID/DTP/04045/20196817 - DCRRNI IDCrossref Funder IDhttp://doi.org/10.13039/501100001871literaturehttp://purl.org/coar/resource_type/c_6501journal articlehttp://purl.org/coar/access_right/c_abf2application/pdffulltexthttps://ubibliorum.ubi.pt/bitstreams/9aa50ff1-bbdb-41ce-b1f4-e713da57f719/downloadInternational Journal of Sports Medicine
spellingShingle Anaerobic Threshold Biophysical Characterisation of the Four Swimming Techniques
Carvalho, Diogo Duarte
Physiology
Biomechanics
Biophysics
Anaerobic threshold
Elite swimmers
status SINGLETON
subject.fl_str_mv Physiology
Biomechanics
Biophysics
Anaerobic threshold
Elite swimmers
title Anaerobic Threshold Biophysical Characterisation of the Four Swimming Techniques
title_full Anaerobic Threshold Biophysical Characterisation of the Four Swimming Techniques
title_fullStr Anaerobic Threshold Biophysical Characterisation of the Four Swimming Techniques
title_full_unstemmed Anaerobic Threshold Biophysical Characterisation of the Four Swimming Techniques
title_short Anaerobic Threshold Biophysical Characterisation of the Four Swimming Techniques
title_sort Anaerobic Threshold Biophysical Characterisation of the Four Swimming Techniques
topic Physiology
Biomechanics
Biophysics
Anaerobic threshold
Elite swimmers
topic_facet Physiology
Biomechanics
Biophysics
Anaerobic threshold
Elite swimmers
url http://hdl.handle.net/10400.6/9194
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