Agreement between different methods to measure the active drag coefficient in front-crawl swimming

Morais, J.E.; Barbosa, Tiago M.; Garrido, Nuno D.; Cirilo-Sousa, Maria S.; Silva, A.J.; Marinho, D.A.

Publication

Agreement between different methods to measure the active drag coefficient in front-crawl swimming

2023Journal article

dc.contributor.author	Morais, J.E.
dc.contributor.author	Barbosa, Tiago M.
dc.contributor.author	Garrido, Nuno D.
dc.contributor.author	Cirilo-Sousa, Maria S.
dc.contributor.author	Silva, A.J.
dc.contributor.author	Marinho, D.A.
dc.date.accessioned	2023-05-19T13:30:52Z
dc.date.available	2023-05-19T13:30:52Z
dc.date.issued	2023
dc.description.abstract	The aim of this study was to analyze the agreement of the active drag coefficient measured through drag and propulsion methods. The sample was composed of 18 swimmers (nine boys: 15.9 ± 0.9 years; nine girls: 15.3 ± 1.2 years) recruited from a national swimming team. The velocity perturbation method was used as the drag measurement system and the Aquanex system as the propulsion system. For both sexes combined, the frontal surface area was 0.1128 ± 0.016 m2, swim velocity 1.54 ± 0.13 m∙s-1, active drag 62.81 ± 11.37 N, propulsion 68.81 ± 12.41 N. The level of the active drag coefficient agreement was calculated based on the mean values comparison, simple linear regression, and Bland Altman plots. The mean data comparison revealed non-significant differences (p > 0.05) between methods to measure the active drag coefficient. Both the linear regression (R2 = 0.82, p < 0.001) and Bland Altman plots revealed a very high agreement. The active drag coefficient should be the main outcome used in the interpretation of the swimmers’ hydrodynamic profile, because it is less sensitive to swimming velocity. Coaches and researchers should be aware that the active drag coefficient can also be calculated based on propulsion methods and not just based on drag methods. Thus, the swimming community can now use different equipment to measure the hydrodynamics of their swimmers	pt_PT
dc.description.sponsorship	This work was supported by national funds (FCT - Portuguese Foundation for Science and Technology) under the project UIDB/DTP/04045/2020	pt_PT
dc.description.version	info:eu-repo/semantics/publishedVersion	pt_PT
dc.identifier.citation	Morais, J.E.; Barbosa, Tiago M.; Garrido, Nuno D.; Cirilo-Sousa, Maria S.; Silva, A.J.; Marinho, D.A. (2023).Agreement between different methods to measure the active drag coefficient in front-crawl swimming. Journal of Human Kinetics. ISSN 1899-7562. 86, p. 1-9	pt_PT
dc.identifier.doi	10.5114/jhk/159605	pt_PT
dc.identifier.eissn	1899-7562
dc.identifier.uri	http://hdl.handle.net/10198/28330
dc.language.iso	eng	pt_PT
dc.peerreviewed	yes	pt_PT
dc.publisher	Sciendo	pt_PT
dc.relation	UIDB/DTP/04045/2020	pt_PT
dc.rights.uri	http://creativecommons.org/licenses/by/4.0/	pt_PT
dc.subject	Swimming	pt_PT
dc.subject	Kinetics	pt_PT
dc.subject	Force	pt_PT
dc.subject	Hydrodynamics	pt_PT
dc.subject	Performance	pt_PT
dc.subject	Research Subject Categories::INTERDISCIPLINARY RESEARCH AREAS::Sports	pt_PT
dc.title	Agreement between different methods to measure the active drag coefficient in front-crawl swimming	pt_PT
dc.type	journal article
dspace.entity.type	Publication
oaire.citation.endPage	9	pt_PT
oaire.citation.startPage	1	pt_PT
oaire.citation.title	Journal of Human Kinetics	pt_PT
oaire.citation.volume	86	pt_PT
person.familyName	Morais
person.familyName	Barbosa
person.givenName	J. E.
person.givenName	Tiago M.
person.identifier	867179
person.identifier.ciencia-id	AA12-BF58-EE60
person.identifier.ciencia-id	8B11-BDC4-F6FF
person.identifier.orcid	0000-0002-6885-0648
person.identifier.orcid	0000-0001-7071-2116
person.identifier.scopus-author-id	10044856400
rcaap.rights	openAccess	pt_PT
rcaap.type	article	pt_PT
relation.isAuthorOfPublication	80b13e62-254d-4d46-ad90-8b509ab523a8
relation.isAuthorOfPublication	941a6f14-cfba-458a-a2e3-0cbd1846cd42
relation.isAuthorOfPublication.latestForDiscovery	80b13e62-254d-4d46-ad90-8b509ab523a8