FLUID INTAKE COMPARED WITH ESTABLISHED STANDARDS AND SYMPTOMS OF DEHYDRATION AMONG ELDERLY RESIDENTS OF A LONG-TERM-CARE FACILITY
No abstract available.
THERMOREGULATION IN HYPERHYDRATED MEN DURING PHYSICAL EXERCISE
The influence of hyperhydration on thermoregulatory function was tested in 8 male volunteers. The subjects performed cycle exercise in the upright position at 52% Vo2max for 45 min in a thermoneutral (Ta = 23 degrees C) environment. The day after the control exercise the subjects were hyperhydrated with tap water (35 ml X kg-1 of [...]
AGE AND HYPOHYDRATION INDEPENDENTLY INFLUENCE THE PERIPHERAL VASCULAR RESPONSE TO HEAT STRESS
Seven young (Y, 22-28 yr) and seven middle-aged (MA, 49-60 yr) normotensive men of similar body size, fatness, and maximal oxygen uptake (VO2max) were exposed to a heat challenge in an environmental chamber (48 degrees C, 15% relative humidity). Tests were performed in two hydration states: hydrated (H, 25 ml water/kg body wt 1 h [...]
HEAT STRESS IMPAIRMENT OF MENTAL PERFORMANCE: A REVISION OF TOLERANCE LIMITS
A time-related, heat stress tolerance curve for unimpaired mental performance was constructed by Wing from a summary of 15 studies. The tolerance limits, more properly described as the lower limits for heat impaired mental performance, were subsequently adopted by the National Institute for Occupational Safety and Health as the recommended standard of tolerance times for [...]
METABOLIC INDICATORS OF HYDRATION STATUS IN THE PREDICTION OF PAROTID SALIVARY-GLAND FUNCTION
Salivary glands require body fluids for normal function. It has been suggested that decreased levels of hydration (dehydration) may cause diminished salivary output, but it is not known whether salivary flow rates are related to biological measures of hydration status. The purpose of this study was to determine whether reduced parotid salivary flow rates, as [...]
RENAL HANDLING OF SODIUM IN OLD PEOPLE: A FUNCTIONAL STUDY
No abstract available.
ENDOCRINE AND RENAL RESPONSE TO WATER LOADING AND WATER RESTRICTION IN NORMAL MAN
1. Nine normal subjects (eight male, one female) on a fixed daily intake of 150 mmol of sodium and 80 mmol of potassium, were randomized to receive either 3 days of 1.0 litre total water intake/24 h (food + fluid) or 4 days of 6.8 litres total water intake/24 h, and were then crossed over [...]
RENAL MANAGEMENT OF SODIUM UNDER INDOMETHACIN AND ALDOSTERONE IN THE ELDERLY
The tubular handling of sodium in two groups of healthy old people, under the action of indomethacin and aldosterone was studied. Urinary aldosterone elimination was measured. From the results obtained, it is deduced that the elderly lose sodium through incompetence of the distal nephron. The possibility is put forward of a Na-K-ATPase deficit and/or interstitial [...]