Acute Sodium Ingestion Before Exercise Increases Voluntary Water Consumption Resulting in Preexercise Hyperhydration and Improvement in Exercise Performance in the Heat
| العنوان: | Acute Sodium Ingestion Before Exercise Increases Voluntary Water Consumption Resulting in Preexercise Hyperhydration and Improvement in Exercise Performance in the Heat |
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| المؤلفون: | Scott R. Collier, Joshua R. Huot, Adam M. Jetton, Alan C. Utter, David M. Morris |
| المصدر: | International Journal of Sport Nutrition and Exercise Metabolism. 25:456-462 |
| بيانات النشر: | Human Kinetics, 2015. |
| سنة النشر: | 2015 |
| مصطلحات موضوعية: | Adult, Male, medicine.medical_specialty, Hot Temperature, Time Factors, Sodium, Drinking, Medicine (miscellaneous), chemistry.chemical_element, Athletic Performance, Placebo, Water consumption, Thirst, Time trial, Double-Blind Method, Humans, Medicine, Ingestion, Orthopedics and Sports Medicine, Dehydration, Cross-Over Studies, Nutrition and Dietetics, business.industry, Sodium, Dietary, General Medicine, medicine.disease, Crossover study, Bicycling, Sports Nutritional Physiological Phenomena, Surgery, chemistry, Anesthesia, Exercise Test, medicine.symptom, business |
| الوصف: | 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. |
| تدمد: | 1543-2742 1526-484X |
| الوصول الحر: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a66ec9251cfa4fb307e2926a82bef919Test https://doi.org/10.1123/ijsnem.2014-0212Test |
| رقم الانضمام: | edsair.doi.dedup.....a66ec9251cfa4fb307e2926a82bef919 |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 15432742 1526484X |
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