Pensar en Movimiento: Revista de Ciencias del Ejercicio y la Salud ISSN Impreso: 1409-0724 ISSN electrónico: 1659-4436

OAI: https://revistas.ucr.ac.cr/index.php/pem/oai
Post-Exercise Rehydration Strategies: Rate of Fluid Intake and Beverage Type
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Keywords

rehydration
sports drink
plain water
urine output
rehidratación
bebida deportiva
agua
producción de orina

How to Cite

Mayol Soto, M. de L., & Aragón-Vargas, L. F. (2009). Post-Exercise Rehydration Strategies: Rate of Fluid Intake and Beverage Type. Pensar En Movimiento: Revista De Ciencias Del Ejercicio Y La Salud, 7(1), 1–10. https://doi.org/10.15517/pensarmov.v7i1.372

Abstract

The purpose of the present study was to investigate the effect of a high (H) and a low (L) rate of fluid consumption with plain water (W) or a sports drink (SD) on post-exercise fluid balance, and to evaluate whether the known differences between beverages depend on the fluid ingestion rate. Active male subjects (n=16) performed four trials in random order. The participants arrived to the trials euhydrated and were dehydrated to 2% of body weight (BW) by cycling intermittently in a controlled climate room (30-35úC). After 30 min of rest, they ingested either W or SD in a volume equivalent to 150% of BW loss, in 45 min (high rate, R) or 165 min (low rate, L). At the time point coinciding with the end of H, urine samples were collected every 30 min for four hours. BW loss was similar for all trials and resulted in a total fluid consumption of 2.48 + 0.4 l. Overall, urine output in W exceeded significantly that of SD in both rates of fluid consumption (p=0.001), but there were no differences between L and R (p=0.378). Subjects finished in negative fluid balance in all trials. It is concluded that SD resulted in better but incomplete restoration of fluid balance than W, independent of the rate of fluid consumption. Although overall fluid balance was the same with both ingestion rates (L and H), L was more comfortable to the subjects.
https://doi.org/10.15517/pensarmov.v7i1.372
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