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Similar to the adult considerations for those exposed to climatic heat stress, the above differences should be taken into consideration when determining water requirements of active children and adolescents. They are unimportant for sedentary or mildly active young people not exposed to climatic heat who therefore produce little or no sweat.

INTAKE OF WATER

Sources

Sources of water consumed to meet body needs include beverages, food, and drinking water. Although water is thought of as the primary fluid to sustain hydration, fluids in different types of beverages and foods contribute significantly to a person’s daily fluid needs (Heller et al., 1999; Appendix Tables D-1, D-2, D-3, and D-4). Figure 4-21 shows the sources and quantities of water consumed as

FIGURE 4-21 Sources and quantities of beverage intake for individuals aged 20 to 64 years as provided by the 1977–1978 National Food Consumption Survey (NFCS) and 1994–1996 Continuing Survey of Food Intakes by Individuals (CSFII). Reprinted with permission, from Heller et al. (1999). Copyright 1999 by the American Association of Public Health Dentistry.



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