BIOMECHANICAL, COORDINATIVE, AND PHYSIOLOGICAL RESPONSES TO A TIME-TO-EXHAUSTION PROTOCOL AT TWO SUBMAXIMAL INTENSITIES IN SWIMMING

AUTOR(ES)

Franken, Marcos

FONTE

J. Phys. Educ.

DATA DE PUBLICAÇÃO

20/12/2019

RESUMO

RESUMO O objetivo deste estudo foi comparar parâmetros biomeânicos, coordenativos e fisiológicos no nado crawl, durante séries de treinamento intervalado realizadas em duas intensidades submáximas até a exaustão. Participaram 11 nadadores, com idade média de 21,0 ± 7,3 anos que realizaram duas séries de treinamento com repetições de 400 m (40 s de repouso passivo) a 90% (v90) e 95% (v95) da velocidade média dos 400 m nado crawl (v400), determinada previamente em um teste máximo de 400 m. Resultados: (i) aumento da frequência média de ciclos de braçadas e redução da distância media percorrida por ciclo entre os trechos e entre as repetições inicial e final nas series v90 e v95; (ii) índice de coordenação e tempo propulsivo aumentaram entre os trechos inicial e final na série v95; (iii) as durações absoluta e relativa da fase de puxada da braçada aumentaram entre as repetições inicial e final da série v95; (d) o esforço percebido, a concentração de lactato e a frequência cardíaca aumentaram entre as repetições inicial e final na v90 e v95. Manter a velocidade nas series v90 e v95 da v400 leva a alterações na organização motora da braçada no nado crawl.ABSTRACT The aim of this study was to compare biomechanical, coordinative and physiological parameters in the front crawl, during interval training series performed in two submaximal intensities until exhaustion. Eleven swimmers, mean age of 21.0 ± 7.3 years, performed two sets of interval training with repetitions of 400 m (40 s of passive rest) at 90% (s90) and 95% (s95) of the 400 m front crawl mean speed (s400), which was previously determined during a maximum 400 m test. The results were: (i) increase in the stroke frequency and decrease in the stroke length between the trials and between the initial and final repetitions in the s90 and s95 series; (ii) index of coordination and propulsive time increased between the initial and final trials in the s95 series; (iii) the absolute and relative durations of the pull phase increased between the initial and final repetitions of the s95 series; (iv) perceived exertion, lactate concentration and heart rate increased between the initial and final repetitions in s90 and s95. To maintain speed in the s90 and s95 series of s400 leads to changes in the motor organization of the stroke in the front crawl.

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