Utilize este identificador para referenciar este registo: http://hdl.handle.net/10198/11617
Título: Young swimmers' classification based on kinematics, hydrodynamics, and anthropometrics
Autor: Barbosa, Tiago M.
Morais, J.E.
Costa, M.J.
Gonçalves, José
Marinho, D.A.
Silva, A.J.
Palavras-chave: Swimming
Kinematics
Hydrodynamics
Anthropometrics
Classification
Data: 2014
Editora: Human Kinetics Publishers
Citação: 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
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.
Peer review: yes
URI: http://hdl.handle.net/10198/11617
DOI: 10.1123/jab.2013-0038
ISSN: 1065-8483
Aparece nas colecções:ESE - Artigos em Revistas Indexados à WoS/Scopus

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