Abstract

FERREIRA, Fabrícia G.; ALMEIDA, Graciene L. de  and  MARINS, João C. B.. Effects of intake of different hydrating solutions on the hydration levels and heart rate during a swimming exercise . Rev. Port. Cien. Desp. [online]. 2007, vol.7, n.3, pp.319-327. ISSN 1645-0523.

This study aimed to identify the hydration levels and interference in the heart rate as a result of adopting different hydration procedures during a swimming exercise with intervals. A total of 15 male athletes with age 18-26 years (20.7±3.8 years) was submitted to the following procedures: a) no type of hydration, b) hydration with placebo, and c) hydration with Gatorade^®. Each treatment corresponded to a total distance of 4.150 meters divided in 250 meters of warm-up; 1 x 400 meters at maximum velocity; 1 x 100 meters in recovery; 10 x 250 meters at 85-90% of maximum velocity for this distance, with intervals of 50 meters in recovery and 400 meters at maximum velocity. Heart rate, body weight before and after each test, amount of liquid consumed during exercise and urine produced were measured to establish the hydration levels. No statistically significant difference (P>0.05) was found on the time effect and between the groups in any of the two parameters analyzed. It can be concluded that the hydration procedures adopted did not influence the heart rate and hydration level responses during the experimental model developed.

Keywords : hydration; dehydration; swimming; heart rate.

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