DEHYDRATION EXHAUSTION
No abstract available.
WATER INTAKE AND URINARY VOLUME DURING 20 DAYS BED-REST IN YOUNG WOMEN.
During the bed-rest in the young subjects, the water intake should be depressed, because the diuretic is probably accelerated, and then the total body water and body weight is decreased by the water loss. In our previous study in 1991, we have reported that urinary volume was gradually increased, while water intake was decreased. Therefore, [...]
Electrolyte & water metabolism in sports activities.
Few studies in water and electrolyte metabolism during sports activities have directed attention to magnesium. Addition of magnesium to sports beverages in appropriate concentrations appears to be safe. This article considers the potential role and availability of magnesium in fluid repletion during sports activities
The clinical physiology of water metabolism. Part II: Renal mechanisms for urinary concentration; diabetes insipidus.
The renal reabsorption of water independent of solute is the result of the coordinated function of the collecting duct and the ascending limb of the loop of Henle. The unique juxtaposition of the ascending and descending portions of the loop of Henle and of the vasa recta permits the function of a counter-current multiplier system [...]
HYPOHYDRATION EFFECT ON FINGER SKIN TEMPERATURE AND BLOOD FLOW DURING COLD-WATER FINGER IMMERSION
This study was conducted to determine whether hypohydration (Hy) alters blood flow, skin temperature, or cold-induced vasodilation (CIVD) during peripheral cooling. Fourteen subjects sat in a thermoneutral environment (27 degrees C) during 15-min warm-water (42 degrees C) and 30-min cold-water (4 degrees C) finger immersion (FI) while euhydrated (Eu) and, again, during Hy. Hy (-4% [...]
Abnormalities of water metabolism in the elderly.
Hypernatremia is a frequent problem at the extremes of age, but particularly so in elderly individuals. Changes in the physiological responses to water deprivation with increasing age may be of particular interest in understanding the pathogenesis of hypernatremia in the elderly. When comparing healthy elderly men to younger controls, there are differences in the response [...]
The clinical physiology of water metabolism. Part I: The physiologic regulation of arginine vasopressin secretion and thirst.
Water balance is tightly regulated within a tolerance of less than 1 percent by a physiologic control system located in the hypothalamus. Body water homeostasis is achieved by balancing renal and nonrenal water losses with appropriate water intake. The major stimulus to thirst is increased osmolality of body fluids as perceived by osmoreceptors in the [...]
EFFECTS OF VOLUNTARY FLUID INTAKE DEPRIVATION ON MENTAL AND PSYCHOMOTOR PERFORMANCE
AIM: To assess if there is deterioration in mental and psychomotor performance during 24-hour voluntary fluid intake deprivation. METHODS: A battery of computer generated psychological tests (Complex Reactionmeter Drenovac-series) was applied to 10 subjects to test light signal position discrimination, short-term memory, simple visual orientation, simple arithmetics, and complex motor coordination. We measured total test [...]
Clinical disorders of water metabolism: hyponatremia and hypernatremia.
No abstract available.
Water metabolism.
No abstract available.