Physical Activity and Importance of Water for the Body
Physical Activity and Importance of Water for the Body

Summary/Abstract: Muscle activity is accompanied by an increase in blood flow, an increase in blood pressure and an increase in capillary permeability. Under the effect of these three factors and especially under the influence of greater hydrostatic pressure, plasma exudation increases along the capillaries and often even the increase in venous pressure opposes the return of the interstitial fluid to the venous pole of the capillary network.Physical activity is present on the various hydrosalin balance sheet items. Hypertonic and plasma exudation factor causes compensatory reactions of the neuroendocrine system, regulating the hydroelectrolytic equilibrium: putting into play the neuro-pituitary antidiuretic system, the intervention of thirst. These two mechanisms are not always sufficient to maintain the body's hydration. Various studies have shown that reducing body water causes a marked fall in work-related skills. A water loss of 4-5% of body weight reduces muscle workout by 20-30%. Efforts in the warm atmosphere risk triggering a circulatory collapse when dehydration corresponds to 10% of body weight. The water balance deficit should be prevented by adequate and sometimes anticipated consumption of a suitable volume of water. But the possibilities of total and immediate loss compensation are limited by the rate of digestive absorption of liquids. Gastric emptying is a very critical point for this device because passage through the pill depends, in part, on the osmolality of the ingested liquid.

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