Percorrer por autor "Lima, Francisco"
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- Energy cost and intra-cyclic variation of the velocity of the centre of mass in breaststrokePublication . Lima, Francisco; Portela, Ana; Soares, Susana; Gonçalves, Pedro; Machado, Leandro; Lima, António B.; Barbosa, Tiago M.; Keskinen, Kari L.; Fernandes, Ricardo J.; Vilas-Boas, João PauloThe purpose of the present study was to analyse the relationship between energy cost (C) and intra-cyclic speed fluctuations(dv) in breaststroke.
- Relationships between energy cost, swimming velocity and speed fluctuation in competitive swimming strokesPublication . Barbosa, Tiago M.; Lima, Francisco; Portela, Ana; Novais, Daniel; Machado, Leandro; Colaço, Paulo; Gonçalves, Pedro; Fernandes, Ricardo J.; Vilas-Boas, João PauloThe purpose of the study was to analyse relationships between total energy expenditure (Etot), energy cost (EC), intra-cycle variation of the horizontal velocity of displacement of centre of mass (dv) and mean swimming velocity (v). 17 Portuguese elite swimmers (4 at Freestyle, 5 at Backstroke, 4 at Breaststroke and 4 at Butterfly) were submitted to an incremental set of nx200-m swims. Bioenergetical and biomechanical parameters presented significant interrelationships. For pooled data, the relationship between Etot and v was r=0.59 (p<0.01), between EC and dv was r=0.38 (p<0.01) and the polynomial relationship, between dv and v was r=0.17 (p=0.28). Individual evaluation and identification of biomechanical critical points may help the swimmers to become more efficient at a certain swimming velocity.
- Relationships between energy cost, swimming velocity and speed fluctuation in elite butterfliersPublication . Barbosa, Tiago M.; Lima, Francisco; Portela, Ana; Novais, Daniel; Lima, António B.; Colaço, Paulo; Fernandes, Ricardo J.; Keskinen, Kari L.; Vilas-Boas, João Paulo