Protection of total body water content and absence of hyperthermia despite 2% body mass loss ('voluntary dehydration') in soldiers drinking ad libitum during prolonged exercise in cool environmental conditions
| Autor: | Timothy D. Noakes, Heinrich W. Nolte, Bernard J. Van Vuuren |
|---|---|
| Rok vydání: | 2010 |
| Předmět: |
Adult
Male Hyperthermia medicine.medical_specialty Fever Wet-bulb globe temperature Body water Drinking Sweating Physical Therapy Sports Therapy and Rehabilitation Walking Body Mass Index Young Adult Animal science Body Water Weight loss Weight Loss medicine Humans Orthopedics and Sports Medicine Dehydration Urine specific gravity business.industry Drinking Water Osmolar Concentration General Medicine Water-Electrolyte Balance medicine.disease Surgery Cold Temperature Urine osmolality Female medicine.symptom business Body mass index |
| Zdroj: | British Journal of Sports Medicine. 45:1106-1112 |
| ISSN: | 0306-3674 |
| DOI: | 10.1136/bjsm.2010.075507 |
| Popis: | The extent to which humans need to replace fluid losses during exercise remains contentious despite years of focused research. The primary objective was to evaluate ad libitum drinking on hydration status to determine whether body mass loss can be used as an accurate surrogate for changes in total body water (TBW) during exercise. Data were collected during a 14.6-km route march (wet bulb globe temperature of 14.1°C ). 18 subjects with an average age of 26 ± 2.5 (SD) years participated. Their mean ad libitum total fluid intake was 2.1 ± 1.4 litres during the exercise. Predicted sweat rate was 1.289 ± 0.530 l/h. There were no significant changes (p>0.05) in TBW, urine specific gravity or urine osmolality despite an average body mass loss (p |
| Databáze: | OpenAIRE |
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