Efectos de la pre-hidratación sobre el rendimiento y el nivel de hidratación en el segmento de natación del triatlón olímpico

  1. Valentín E. Fernández-Elías 1
  2. Rodrigo Escribano Tabernero 1
  1. 1 Universidad Europea de Madrid
    info

    Universidad Europea de Madrid

    Madrid, España

    ROR https://ror.org/04dp46240

Revue:
Revista Española de Educación Física y Deportes: REEFD

ISSN: 1133-6366

Année de publication: 2017

Titre de la publication: XIV Congreso Internacional AEISAD

Número: 418

Pages: 534-539

Type: Article

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D'autres publications dans: Revista Española de Educación Física y Deportes: REEFD

Résumé

Previous studies have shown that a dehydration level greater than 2% means a substantial descent in the physical performance. Thus, it is important to maintain a correct hydra-tion status during exercising. However, swimming particularity impedes that rehydration can be done without affecting performance (stop to drink). It may be relevant to pro-mote a proper hydration status by us-ing a pre-hydration strategy in long distance swimming trials or the seg-ment of swimming in triathlon (1500m). The aim of this study was to assess the effects of pre-hydration in performance and hydration level during a simulation trial of a segment of swimming in triathlon. For that, 7 triathletes (33.5 ± 7.5 yo; 1.75 ± 8.3 m: 70.9 ± 7.8 kg) with a training ex-perience of 3-5 d/w during at least, the last 4 years, performed 2 bouts in a random order. In one bout, the par-ticipants were pre-hydrated with 500 mL of water, and other trial where participants performed their usual routines previous to competition (control trial). Trials consisted in swimming during 1500m, the dis-tance of the segment of swimming in triathlon, with the goal of completing the distance as fastest as possible. Body weight and hydration status were analyzed pre and post exercise. During exercise HR and performance (swimming time) were monitored. Similar HR and body weight differ-ence in both trial were similar (147 ± 21 y 145 ± 14 bpm; 0.29 ± 0.12 y 0.37 ± 0.16 kg for pre-hydration and control respectively) showed that the magnitude of the effort performed was similar in both trials. Perfor-mance during the 1500m was greater in the pre-hydration trial compared to control (25’45’’ ± 2’47’’ y 26’53’’ ± 3’21’’; p < 0.05). Further, hydra-tion level at the end of exercise was better in the pre-hydration trial com-pared to control (3 ± 1 vs. 4 ± 1 AU; p < 0.05).

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