7 documents found, page 1 of 1
Modelling and Predicting Backstroke Start Performance Using Non-Linear And Line...
Jesus, Karla de; Ayala, Helon V. H; Jesus, Kelly de; Coelho, Leandro dos S; Medeiros, Alexandre I.A.; Abraldes, José Arturo; Vaz, Mário A. P.Our aim was to compare non-linear and linear mathematical model responses for backstroke start performance prediction. Ten swimmers randomly completed eight 15 m backstroke starts with feet over the wedge, four with hands on the highest horizontal and four on the vertical handgrip. Swimmers were videotaped using a dual media camera setup, with the starts being performed over an instrumented block with four forc...
Biomechanical characterization of swimmers with physical disabilities
Ramos Junior, Valdir Rodrigues; Medeiros, Alexandre; Jesus, Kelly de; Garrido, Nuno; Corredeira, Rui; Daly, Daniel J; Fernandes, Ricardo JThe evaluation of swimming technique is one of the main aspects to be considered in any training program, with biomechanics being an important source of knowledge. It was our objective to characterize the biomechanical parameters (SL and SF) relating them to the swimming velocity (v) at different intensities and to analyze within each swimming stroke cycle the intra-cyclic velocity variation (IVV) in a group of...
Neuromuscular Activity of Upper and Lower Limbs during two Backstroke Swimming ...
Jesus, Karla de; Jesus, Kelly de; Medeiros, Alexandre Igor Araripe; Gonçalves, Pedro; Figueiredo, Pedro; Fernandes, Ricardo JA proficient start is decisive in sprint competitive swimming events and requires swimmers’ to exert maximal forces in a short period to complete the task successfully. The aim of this study was to compare the electromyographic (EMG) activity inbetween the backstroke start with feet positioned parallel and partially emerged performed with the hands on the highest horizontal and on the vertical handgrip at hands...
Are the new starting block facilities beneficial for backstroke start performance
Jesus, Karla de; Jesus, Kelly de; Abraldes, José Arturo; Medeiros, Alexandre Igor Araripe; Fernandes, Ricardo J; Vilas-Boas, And João PauloWe aimed to analyse the handgrip positioning and the wedge effects on the backstroke start perfor10 mance and technique. Ten swimmers completed randomly eight 15 m backstroke starts (four with hands on highest horizontal and four on vertical handgrip) performed with and without wedge. One surface and one underwater camera recorded kinematic data. Standardised mean difference (SMD) and 95% confidence intervals (...
Effects of protocol step length on biomechanical measures in swimming
Barbosa, Tiago M.; Jesus, Kelly de; Abraldes, J. Arturo; Ribeiro, João; Figueiredo, Pedro; Vilas-Boas, João Paulo; Fernandes, Ricardo J.The assessment of energetic and mechanical parameters in swimming often requires the use of an intermittent incremental protocol, whose step lengths are corner stones for the efficiency of the evaluation procedures. Purpose: To analyze changes in swimming kinematics and interlimb coordination behavior in 3 variants, with different step lengths, of an intermittent incremental protocol. Methods: Twenty-two male s...
Contributos da biomecânica para o estudo do rendimento desportivo em natação
Vilas-Boas, João Paulo; Oliveira, Sara; Silva, Diana; Sousa, Ana Francisca; Ribeiro, João; Jesus, Kelly de; Costa, Lígia; Figueiredo, PedroNa actualidade, o progresso do rendimento desportivo ao mais alto nível só é susceptível de ser conseguido através de uma combinação (que diríamos necessariamente feliz) de um vasto conjunto de factores: é necessário desde logo um pouco de sorte (como em tudo na vida – mesmo que seja para cozinhar a sopa de pedra requerida), mas sobretudo um praticante talentoso e motivado, condições de treino adequadas, um env...
Novas aplicações de tecnologia computacional e biomecânica ao desenvolvimento d...
Vilas-Boas, João Paulo; Costa, Lígia; Santos, S.; Pereira, Francisco; Oliveira, N.; Rebocho, M.; Monteiro, L.; Oliveira, Sara; Jesus, Kelly deA Biomecânica constitui um dos domínios das Ciências do Desporto onde o desenvolvimento tecnológico se tem revelado mais exuberante, nomeada e especialmente a par dos desenvolvimentos operados na computação e nas novas tecnologias em geral. A natação, por seu lado, constitui a referência maior de entre as modalidades desportivas praticadas na água e, de entre estas, aquela onde, aparentemente, a investigação ci...