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Time limit at VO2max velocity in elite crawl swimmers
Ricardo Fernandes; Kari Keskinen; Paulo Colaço; Ana Querido; Leandro Machado; Pedro Morais; Daniel Novais; Daniel Marinhohe purpose of this study is to assess, with elite crawl swimmers, the time limit at the minimum velocity corresponding to maximal oxygen consumption (TLim-vVO2max), and to characterize its main determinants. Eight subjects performed an incremental test for vVO2max assessment and, forty-eight hours later, an all-out swim at vVO2max until exhaustion. VO2 was directly measured using a telemetric portable gas analy...
Predicting the intra-cyclic variation of the velocity of the centre of mass fro...
Tiago Barbosa; Ricardo Fernandes; Pedro Morouço; João Paulo Vilas Boas Soares CamposThe purpose of this study was to analyze the relationship between the intra-cycle variation of the horizontal velocity of displacement of the center of mass (dV), the hand's and feet's velocity, as well as, to identify the variables that most predict the dV's, in butterfly stroke. The study was divided in two parts. The aim of Part I was to investigate the behavior of variables in study at slow swimming velocit...
The influence of stroke mechanics into energy cost of elite swimmers
Tiago Barbosa; Ricardo Fernandes; Kari Keskinen; João Paulo Vilas Boas Soares CamposThe purpose of this study was to analyze the relationships between energy cost (C), swimming velocity (v), stroke frequency (SF) and stroke length (SL) in toplevel swimmers. Eighteen elite swimmers (four freestylers, five backstrokers, five breaststrokers and four butterflyers) performed an intermittent set of n 9 200 m swims (n B 8) with increasing velocity. The oxygen consumption was measured breath-by-breath...
Does net energy cost of swimming affect time to exhaustion at the individual's ...
Ricardo Fernandes; Véronique Billat; Ana Cruz; Paulo Colaço; Carla Cardoso; João Paulo Vilas Boas Soares CamposAim. The purpose of the present study was to examine the relationship between time limit at the minimum velocity that elicits the individual’s maximal oxygen consumption (TLim-v O2max) and three swimming economy related parameters: the net energy cost corresponding to v O2max (Cv O2max), the slope of the regression line obtained from the energy expenditure ( ) and corresponding velocities during an increm...
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