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Effect of hand paddles and parachute on backstroke coordination and stroke parameters.
Telles, Thiago; Barroso, Renato; Figueiredo, Pedro; Salgueiro, Diego Fortes de Souza; Vilas-Boas, João Paulo; Junior, Orival Andries.
Afiliação
  • Telles T; a Laboratory of Aquatic Activities, Physical Education Faculty, Sports Science Department , State University of Campinas , Campinas , Brazil.
  • Barroso R; b Centre of Research, Education, Innovation and Intervention in Sport, Faculty of Sport , University of Porto , Porto , Portugal.
  • Figueiredo P; a Laboratory of Aquatic Activities, Physical Education Faculty, Sports Science Department , State University of Campinas , Campinas , Brazil.
  • Salgueiro DF; b Centre of Research, Education, Innovation and Intervention in Sport, Faculty of Sport , University of Porto , Porto , Portugal.
  • Vilas-Boas JP; c School of Physical Education , Federal University of Rio Grande do Sul , Porto Alegre , Brazil.
  • Junior OA; a Laboratory of Aquatic Activities, Physical Education Faculty, Sports Science Department , State University of Campinas , Campinas , Brazil.
J Sports Sci ; 35(9): 906-911, 2017 May.
Article em En | MEDLINE | ID: mdl-27373807
Hand paddles and parachutes have been used in order to overload swimmers, and consequently increase the propulsive force generation in swimming. However, their use may affect not only kinematical parameters (average speed, stroke length and stroke rate), but also time gaps between propulsive phases, assessed through the index of coordination (IdC). The objective of this study was to assess the effects of hand paddles and parachute use, isolated or combined, on kinematical parameters and coordination. Eleven swimmers (backstroke 50-m time: 29.16 ± 1.43 s) performed four 15-m trials in a randomised order at maximal intensity: (1) without implements (FREE), (2) with hand paddles (HPD), (3) with parachute (PCH) and (4) with hand paddles plus parachute (HPD+PCH). All trials were video-recorded (60 Hz) in order to assess average speed, stroke rate, stroke length, five stroke phases and index of coordination. When average swimming speed was compared to FREE, it was lower in PCH and HPD+PCH, and higher in HPD. Stroke rate decreased in all overloaded trials compared to FREE. The use of hand paddles and parachute increased and decreased stroke length, respectively. In addition, propulsive phase duration was increased when hand paddles were used, and time gaps shifted towards zero (no time gap), especially when hand paddles were combined with parachute. It is conceivable that the combined use of hand paddles and parachute, once allowing overloading both propulsive and resistive forces, provides a specific stimulus to improve muscle strength and propulsive continuity.
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Braço / Natação / Treinamento Resistido / Mãos / Destreza Motora Tipo de estudo: Clinical_trials Limite: Adult / Humans / Male Idioma: En Revista: J Sports Sci Ano de publicação: 2017 Tipo de documento: Article País de afiliação: Brasil País de publicação: Reino Unido
Texto completo
Adicionar na Minha BVS
Imprimir
XML
PubMed Links
Buscar no Google

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Braço / Natação / Treinamento Resistido / Mãos / Destreza Motora Tipo de estudo: Clinical_trials Limite: Adult / Humans / Male Idioma: En Revista: J Sports Sci Ano de publicação: 2017 Tipo de documento: Article País de afiliação: Brasil País de publicação: Reino Unido