Database for Thirst response to post-exercise fluid replacement needs and controlled drinking




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Capitán Jiménez, Catalina
Aragón Vargas, Luis Fernando

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Dataset to accompany a previous publication. Capitán-Jiménez, C. & Aragón-Vargas, L.F. (2016). Thirst Response to Post-Exercise Fluid Replacement Needs and Controlled Drinking. Pensar en Movimiento: Revista de Ciencias del Ejercicio y la Salud, 14(2), 1-16. Perceived thirst (TP) was evaluated as a dependent variable: can it distinguish among several levels of acute dehydration, is it reliable, and how does it respond to the ingestion of a fixed water volume post exercise? In a repeated-measures design, eight physically active students (24.5±3.6 years, mean±SD), reported to the laboratory on four non-consecutive days. They remained at rest or exercised at 32±3°C db and 65±6% rh to a randomly assigned dehydration equivalent to 1, 2, and 3% of body mass (BM). Following exercise, participants ingested a fixed water volume of 1.20% BM in 30 minutes; urine output, TP and plasma volume changes were assessed every 30 minutes over 3 hours. Post-exercise TP was not different before and after showering (p = 0.860), but it was significantly different among conditions (TP = 2.50 ± 0.45, 4.44 ± 0.72, 6.38 ± 0.82, and 8.63 ± 0.18 for 0, 1, 2, and 3% BM, p = 0.001). TP was associated with net fluid balance (rpart = -0.62, p < 0.0001) but, soon after drinking, TP was the same regardless of dehydration (p > 0.05). Thirst perception is valid and reliable in the absence of drinking but it responds inappropriately to water intake.


Palabras clave

Hydration, Hidratación, Ejercicio, Exercise, Thirst perception, Percepción de la sed, Dehydration, Deshidratación, Ingesta de líquido, Fluid intake