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Keep Your Kids Hydrated
Some of this sounds way beyond what most of use would think of as common sense, but with the recent deaths of Korey Stringer of the Ravens, and other high school and college athletes, it seems like a good idea to repeat some of these hydration guidelines here.
Water Basics - Water makes up about 60% of a young male's weight, and 50% of a female's. Two thirds of the water is held in our blood cells.. Hydration plays an vital role in regulating body temperature, energy metabolism and cardiovascular stress and plays a significant role in maintaining athletic performance levels. Dehydration can be fatal if an athlete loses more than 9-12% of body weight through water loss. That means a 10 year old weighing 70 pounds would have to loose 7 pounds through water loss to suffer dehydration. The Thirst Mechanism - In general we sweat out proportionately more water than minerals compared to the fluids in our body - we lose water at a faster rate. The concentration of sodium in sweat is about one third that of blood plasma. So as we sweat, the concentration of minerals in blood plasma may actually increase, which trigger's the body's thirst mechanism as it tries to maintain mineral balance. This thirst trigger mechanism is too slow and inefficient for hydration purposes and performance - by the time the body registers that it needs water for maintaining mineral balance, dehydration has already set in and performance will be declining. Hydrate with more than just water - just drinking plain water when extremely dehydrated could tip the body the other way - if we were to quickly dilute the concentration of minerals in the vascular compartment of the body, we would excrete more water to maintain it, even if we were already dehydrated. So hydration has to be accompanied by the right blend of minerals - primarily sodium and chloride.
excerpt from Copyright © 2000 Brookside Little League, Inc. All rights reserved [Official Little League Rules & Regulations] [Parents] [Players/Kids]
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