The critical level of water deficit causing a decrease in human exercise performance: a practical field study
| Autor: | Taketoshi Morimoto, Akira Yorimoto, Seiichi Nakai, Toshimasa Takanishi, Tetsuya Yoshida |
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| Rok vydání: | 2002 |
| Předmět: |
Adult
Male medicine.medical_specialty Anaerobic Threshold Physiology Wet-bulb globe temperature Sweating Physical exercise Baseball Water deficit Body Temperature Animal science Physiology (medical) medicine Humans Orthopedics and Sports Medicine Dehydration Exercise physiology Exercise Chemistry Public Health Environmental and Occupational Health Water General Medicine medicine.disease Water Loss Insensible Surgery Critical level Cycling Anaerobic exercise |
| Zdroj: | European Journal of Applied Physiology. 87:529-534 |
| ISSN: | 1439-6327 1439-6319 |
| Popis: | To analyse the critical level of water deficit which causes a decrease in aerobic and anaerobic exercise performance, a step test score (STS) and 10 s maximal anaerobic power (MAP) output during cycling exercise were measured in two experiments (Ex-1, n=7, and Ex-2, n=9), before and after baseball practice, using subjects who played regularly. The measurements in both Ex-1 and Ex-2 were repeated under four conditions of fluid ingestion (FI) (FI of 80%, 60%, 40%, and 20% of the total sweat loss) on hot summer days. The subjects were allowed free access to a sports beverage, maintained at 10–15°C, within any given FI condition during the exercise. The [mean (SEM)] duration of the exercise and the environmental conditions (wet bulb globe temperature) were similar between Ex-1 [3.52 (0.14) h and 29.2 (0.6)°C, respectively] and Ex-2 [3.82 (0.12) h and 29.2 (0.4)°C, respectively]. In both Ex-1 and Ex-2, the loss of body mass (Δm b) increased significantly as FI decreased. In Ex-1, the STS significantly decreased (P |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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