Is whole-body hydration an important consideration in dry eye?

Purpose. To identify if whole-body hydration plays an important role in dry eye (DE). We hypothesized that individuals classified as DE have higher plasma osmolality (Posm), indicating suboptimal hydration, compared with those classified as non-DE. Methods. Using a hospital-based observational cross-sectional design, assessment of DE and hydration was performed upon admission in 111 participants (N [...]

By |2017-05-21T03:18:50+00:00enero 31st, 2013|Assessment methodologies, Documentos científicos|Comentarios desactivados en Is whole-body hydration an important consideration in dry eye?

Urine specific gravity in exercisers prior to physical training.

Urine specific gravity (USG) is used as an index of hydration status. Many studies have used USG to estimate pre-exercise hydration in athletes. However, very little is known about the pre-exercise hydration status of recreational exercisers. The purpose of the present study was to measure the pre-exercise USG in a large sample of recreational exercisers who attended 2 different fitness centers [...]

By |2017-05-21T03:19:09+00:00enero 31st, 2013|Assessment methodologies, Documentos científicos|Comentarios desactivados en Urine specific gravity in exercisers prior to physical training.

Effect of glycerol-induced hyperhydration on thermoregulatory and cardiovascular functions and endurance performance during prolonged cycling in a 25 degrees Cenvironment.

We compared the effect of glycerol-induced hyperhydration (GIH) to that of water-induced hyperhydration (WIH) on cardiovascular and thermoregulatory functions and endurance performance (EP) during prolonged cycling in a temperate climate in subjects consuming fluid during exercise. At weekly intervals, 6 trained male subjects ingested, in a randomized, double-blind, counterbalanced fashion, either a glycerol (1.2 g [...]

By |2017-05-21T03:19:09+00:00enero 31st, 2013|Assessment methodologies, Documentos científicos|Comentarios desactivados en Effect of glycerol-induced hyperhydration on thermoregulatory and cardiovascular functions and endurance performance during prolonged cycling in a 25 degrees Cenvironment.

Hydration assessment using the cardiovascular response to standing.

The cardiovascular response to standing (sit-to-stand change in heart rate; SSΔHR) is commonly employed as a screening tool to detect hypohydration (body water deficit). No study has systematically evaluated SSΔHR cut points using different magnitudes or different types of controlled hypohydration. The objective of this study was to determine the diagnostic accuracy of the often [...]

By |2017-05-21T03:18:52+00:00enero 31st, 2013|Assessment methodologies, Documentos científicos|Comentarios desactivados en Hydration assessment using the cardiovascular response to standing.

Effect of preexercise electrolyte ingestion on fluid balance in men and women.

PURPOSE: This article aimed to study the effect of preexercise ingestion of an electrolyte-containing beverage and meal on fluid balance during exercise in men and women. METHODS: Twenty healthy, college-aged people (10 males, 10 females; mean +/- SD = 51.2 +/- 9.8 mL x kg x min(-1)) exercised at 58 +/- 4% V O 2 peak for 90 min, 45 min after ingesting 355 mL of [...]

By |2017-05-21T03:19:11+00:00enero 31st, 2013|Assessment methodologies, Documentos científicos|Comentarios desactivados en Effect of preexercise electrolyte ingestion on fluid balance in men and women.

Influence of water drinking on resting energy expenditure in overweight children.

BACKGROUND: It was previously demonstrated that drinking water significantly elevates the resting energy expenditure(REE) in adults, and that low water intake is associated with obesity and lesser success in weight reduction. This study addressed the potential of water drinking to increase the REE in children, as an additional tool for weight management. OBJECTIVE: To examine [...]

By |2017-05-21T03:19:28+00:00enero 31st, 2013|Assessment methodologies, Documentos científicos|Comentarios desactivados en Influence of water drinking on resting energy expenditure in overweight children.

Drinking water with a meal: a simple method of coping with feelings of hunger,satiety and desire to eat.

This study examined whether drinking of water with breakfast affects the feelings of satiety and hunger, and how long after the meal this effect is maintained. Eight healthy, normal-weight women had three breakfasts with two extra glasses (4 dl) of water and three similar breakfasts without water. The breakfasts were served on three successive mornings during a 2 week period. The subjects filled in forms with visual analogue [...]

By |2017-05-21T03:19:28+00:00enero 31st, 2013|Assessment methodologies, Documentos científicos|Comentarios desactivados en Drinking water with a meal: a simple method of coping with feelings of hunger,satiety and desire to eat.

Does the provision of cooled filtered water in secondary school cafeterias increase water drinking and decrease the purchase of soft drinks?

BACKGROUND: Secondary school students often do not drink sufficient quantities of water during the school day to prevent dehydration, promote learning and good health. The study aimed to measure the effect of health promotion and the free provision of cooled filtered water on the consumption of water and soft drinks. It also aimed to explore students' views of drinking water provision. METHODS: A study was conducted with three secondary schools in North Tyne side. [...]

By |2017-05-21T03:19:29+00:00enero 31st, 2013|Assessment methodologies, Documentos científicos|Comentarios desactivados en Does the provision of cooled filtered water in secondary school cafeterias increase water drinking and decrease the purchase of soft drinks?

Promotion and provision of drinking water in schools for overweight prevention:randomized, controlled cluster trial.

OBJECTIVE: The study tested whether a combined environmental and educational intervention solely promoting water consumption was effective in preventing overweight among children in elementary school. METHODS: The participants in this randomized, controlled cluster trial were second- and third-graders from 32 elementary schools in socially deprived areas of 2 German cities. Water fountains were installed and [...]

By |2017-05-21T03:19:29+00:00enero 31st, 2013|Assessment methodologies, Documentos científicos|Comentarios desactivados en Promotion and provision of drinking water in schools for overweight prevention:randomized, controlled cluster trial.

Effect of aging on regional cerebral blood flow responses associated with osmoticthirst and its satiation by water drinking: a PET study.

Levels of thirst and ad libitum drinking decrease with advancing age, making older people vulnerable to dehydration. This study investigated age-related changes in brain responses to thirst and drinking in healthy men. Thirst was induced with hypertonic infusions (3.1 ml/kg 0.51M NaCl) in young (Y) and older (O) subjects. Regional cerebral blood flow (rCBF) was measured with positron emission tomography (PET). Thirst activations were identified by correlating rCBF with thirst ratings. Average rCBF was measured from regions [...]

By |2017-05-21T03:19:10+00:00enero 31st, 2013|Assessment methodologies, Documentos científicos|Comentarios desactivados en Effect of aging on regional cerebral blood flow responses associated with osmoticthirst and its satiation by water drinking: a PET study.