VALIDITY OF URINE-BLOOD HYDRATIONAL MEASURES TO ASSESS TOTAL BODY WATER CHANGES DURING MOUNTAINEERING IN THE SUB-ARCTIC.

Mountaineering involves high altitude and cold exposure which are each associated with significant levels of dehydration (via altitude-cold diuresis, high energy expenditures, and poor access to water). The purpose of this study was to identify and validate urine and blood indices of dehydration as compared to changes in total body water (which served as the [...]

By |2013-01-31T18:33:40+00:00enero 31st, 2013|Assessment methodologies, Scientific papers|0 Comments

IMPACT OF HYDRATION STATUS ON BODY COMPOSITION AS MEASURED BY DUAL ENERGY X-RAY ABSORPTIOMETRY IN NORMAL VOLUNTEERS AND PATIENTS ON HAEMODIALYSIS.

To evaluate the influence of hydration status on the estimation of body composition using dual-energy X-ray absorptiometry (DXA), six normal volunteers and seven patients on maintenance haemodialysis were investigated using two different DXA machines (Lunar DPX, Hologic QDR 1000/W). Normal volunteers were studied (Hologic QDR 1000/W) before and 1 h after ingestion of breakfast, lunch [...]

By |2013-01-31T18:33:40+00:00enero 31st, 2013|Assessment methodologies, Scientific papers|0 Comments

HUMAN-MILK INTAKE MEASURED BY ADMINISTRATION OF DEUTERIUM OXIDE TO THE MOTHER: A COMPARISON WITH THE TEST- WEIGHING TECHNIQUE.

This population-based case-control study reports on the relationship between fluid intake and the incidence of bladder cancer among 262 bladder cancer cases from Western Washington and 405 controls identified through random-digit dialing Cases were identified from the Surveillance. Epidemiology, and End Results (SEER) registry and were diagnosed between January 1987 and June 1990. All eligible [...]

By |2013-01-31T18:33:40+00:00enero 31st, 2013|Assessment methodologies, Scientific papers|0 Comments

URINARY AND HEMATOLOGIC INDEXES OF HYPOHYDRATION.

As part of a large-scale field feeding system test we were able to collect and study hundreds of aliquots of overnight urine samples obtained immediately prior to a fasting blood sample on days 1, 20, and 44 of the field test. The large number of experimental samples (greater than 650) and concomitant collection of blood [...]

By |2013-01-31T18:33:25+00:00enero 31st, 2013|Assessment methodologies, Scientific papers|0 Comments

SALIVA FLOW RATE, TOTAL PROTEIN CONCENTRATION AND OSMOLALITY AS POTENTIAL MARKERS OF WHOLE BODY HYDRATION STATUS DURING PROGRESSIVE ACUTE DEHYDRATION IN HUMANS.

OBJECTIVE: To identify whether saliva flow rate, total protein concentration and osmolality are sensitive non-invasive markers of whole body hydration status, we compared changes in these parameters with changes in body mass during progressive acute dehydration. DESIGN: Twelve euhydrated males reported to the laboratory following an overnight fast and cycled on a stationary ergometer at [...]

By |2013-01-31T18:33:25+00:00enero 31st, 2013|Assessment methodologies, Scientific papers|0 Comments

Relative density of urine: methods and clinical significance.

The physical properties and chemical composition of urine are highly variable and are determined in large measure by the quantity and the type of food consumed. The specific gravity is the ratio of the density to that of water, and it is dependent on the number and weight of solute particles and on the temperature [...]

By |2013-01-31T18:33:24+00:00enero 31st, 2013|Assessment methodologies, Scientific papers|0 Comments