Acute Sodium Ingestion Before Exercise Increases Voluntary Water Consumption Resulting In Preexercise Hyperhydration and Improvement in Exercise Performance in the Heat
Morris DM, Huot JR, Jetton AM, Collier SR, Utter AC
International journal of sport nutrition and exercise metabolism · 17 citas
Cómo se estudió
- Diseño
- Ensayo controlado aleatorizado (indexado por PubMed)
- Estudiado en
- Personas
- Resultado principal
- Marcadores de salud y funcionamiento
Quién lo pagó
- Financiación
- Financiación independiente
- Universidad u hospital
- Appalachian State University
Según 1 financiador declarado.
Publicación
- Publicado
- 2015-03-27 · Int J Sport Nutr Exerc Metab · vol. 25 · número 5 · págs. 456–462
- Editorial
- Human Kinetics
- Citado
- 22 citas · más que el 74% de estudios similares · 0.9× el promedio de su campo
- Referencias
- 0 trabajos
- Acceso
- De pago
- Áreas de investigación
- Thermoregulation and physiological responses · Sports Performance and Training · Muscle metabolism and nutrition
- Palabras clave
- Ingestion, Thirst, Dehydration, Placebo, sed, Sodium, Water consumption, Animal science, Chemistry, Turnover, Medicine, Anesthesia, Internal medicine, Biochemistry, Environmental science
- MeSH
- humans, dehydration, sodium, dietary, exercise test, cross-over studies, double-blind method, thirst, drinking, time factors, bicycling, adult, male, athletic performance, hot temperature, sports nutritional physiological phenomena
5 autores
- David M. Morris🇺🇸The University of Texas of the Permian Basin
- Joshua R. Huot
- Adam M. Jetton
- Scott Robert Collier
- Alan C. Utter
Resumen
El texto original del estudio, en el idioma en que se publicó.
Dehydration has been shown to hinder performance of sustained exercise in the heat. Consuming fluids before exercise can result in hyperhydration, delay the onset of dehydration during exercise and improve exercise performance. However, humans normally drink only in response to thirst, which does not result in hyperhydration. Thirst and voluntary fluid consumption have been shown to increase following oral ingestion or infusion of sodium into the bloodstream. We measured the effects of acute sodium ingestion on voluntary water consumption and retention during a 2-hr hydration period before exercise. Subjects then performed a 60-min submaximal dehydration ride (DR) followed immediately by a 200 kJ performance time trial (PTT) in a warm (30 °C) environment. Water consumption and retention during the hydration period was greater following sodium ingestion (1380 ± 580 mL consumed, 821 ± 367 ml retained) compared with placebo (815 ± 483 ml consumed, 244 ± 402 mL retained) and no treatment (782 ± 454 ml consumed, 148 ± 289 mL retained). Dehydration levels following the DR were significantly less after sodium ingestion (0.7 ± 0.6%) compared with placebo (1.3 ± 0.7%) and no treatment (1.6 ± 0.4%). Time to complete the PTT was significantly less following sodium consumption (773 ± 158 s) compared with placebo (851 ± 156 s) and no treatment (872 ± 190 s). These results suggest that voluntary hyperhydration can be induced by acute consumption of sodium and has a favorable effect on hydration status and performance during subsequent exercise in the heat.
Resumen vía Europe PMC. Los derechos de autor siguen siendo de los autores o la editorial.
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