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Utilize este identificador para referenciar este registo: http://hdl.handle.net/10314/3322

Título: A mechanical speedo-meter to assess swimmer’s intra-cyclic velocity: validation at front-crawl and backstroke.
Autores: Feitosa, Welington
Costa, Mário
Morais, Jorge
Garrido, Nuno
Silva, António
Lima, António
Barbosa, Tiago
Data: 2013
Editora: International Society of Biomechanics
Citação: FEITOSA WG, COSTA MJ, MORAIS JE, GARRIDO ND, SILVA AJ, LIMA AB, BARBOSA TM (2013) A mechanical speedo-meter to assess swimmer’s intra-cyclic velocity: validation at front-crawl and backstroke. In Vaz MA (eds). Proceedings of the 24th International Society of Biomechanics Congress. Universidade do Rio Grande do Sul, Natal, Brazil.
Resumo: The aim of this paper was to validate the system for the assessment of horizontal intra-cyclic velocity while swimming front crawl and backstroke. 12 boys and 11 girls with at least 4-y of experience participating in regional and national level competitions undertook a set of maximal 2x25 m (Front-crawl and Backstroke). The speedo-meter (f = 50 Hz) cable was attached to the subject’s hip and data was acquired on-line. At the same time, subjects were recorded in the sagital plane with an underwater video camera and thereafter the hip was digitized. It was analyzed the: (i) maximal velocity; (ii) minimal velocity; (iii) difference between maximal and minimal velocity; (iv) coefficient of variation. There were no significant differences for the mean values between apparatus for the variables selected, except for maximal velocity. Linear regression models where very high. More than 80% of the Bland-Altman plots were with the 1.96 standard-deviation criteria used on regular basis as rule thumb for techniques validation.
URI: http://hdl.handle.net/10314/3322
Aparece nas Colecções:Artigos em Acta de Conferência Internacional (ESECD)

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