Accuracy of urine specific gravity and osmolality as indicators of hydration status.

To reduce the adverse consequences of exertion-related and acute intentional dehydration research has focused on monitoring hydration status. This investigation: 1) compared sensitivity of urine specific gravity (Usg), urine osmolality (U(osm)) and a criterion measurement of hydration, plasma osmolality (P(osm)), at progressive stages of acute hypertonic dehydration and 2) using a medical decision model, determined [...]

By |2013-01-31T18:33:07+00:00enero 31st, 2013|Assessment methodologies, Scientific papers|0 Comments

Hydration needs throughout the lifespan.

In 2004, the Institute of Medicine (IOM) issued a report presenting reference intake information about water, sodium, potassium, and other electrolytes for Americans and Canadians. The report established, for the first time, adequate intakes (AI) for total water (from drinking water, beverages, and food) for healthy people. An AI is the recommended average daily intake [...]

Hydration and cognitive function in children.

Massachusetts 02111, USA. Adequate fluid intake is critical for survival. While adults are at liberty to drink fluids as wanted, children and infants are dependent upon caregivers for food and fluid. Children are at greater risk for dehydration than adults due to their higher surface-to-mass ratio. Additionally, children have different thirst sensitivities and body cooling [...]

By |2013-01-31T18:33:07+00:00enero 31st, 2013|Children, Scientific papers|0 Comments

An exploration of factors that influence the regular consumption of water by Irish primary school children.

BACKGROUND: Inadequate hydration has been linked to many factors that may impact on children's education and health. Teachers play an important role in the education and behaviour of children. Previous research has demonstrated low water intake amongst children and negative teachers' attitudes to water in the classroom. The present study aimed to explore teachers' knowledge [...]

Effect of hydration and continuous urinary drainage on urine production in children.

OBJECTIVE: Although urine production depends on numerous physiological variables there are no quantitative data regarding the effect of bladder decompression, by means of continuous catheter drainage, on urine production. The aim of this study was to investigate this effect. MATERIAL AND METHODS: The study was carried out in two stages, each consisting of two phases. [...]

By |2013-01-31T18:33:07+00:00enero 31st, 2013|Children, Scientific papers|0 Comments

Heat illness in children.

With an increasing number of children and adolescents involved in competitive athletics throughout the calendar year, the sports medicine team must be familiar with preventing and treating heat-related illness. Heat illness is a spectrum of illnesses from heat cramps to heat stroke. Mortality for heat stroke ranges from 17% to 70%, depending on severity and [...]

By |2013-01-31T18:33:07+00:00enero 31st, 2013|Children, Scientific papers|0 Comments

Heat acclimatization and hydration status of American football players during initial summer workouts.

This investigation evaluated the new National Collegiate Athletic Association model of heat acclimatization for football players using physiological, psychological, fluid balance, anthropometric, and nutritional variables. Eleven football players (20 +/- 1 year, 1.88 +/- 0.05 m, and 115.36 +/- 18.85 kg) from a Division I football team were observed for the first 8 days of [...]

By |2013-01-31T18:33:07+00:00enero 31st, 2013|Exercise and sport, Scientific papers|0 Comments

Errors in the estimation of hydration status from changes in body mass.

Hydration status is not easily measured, but acute changes in hydration status are often estimated from body mass change. Changes in body mass are also often used as a proxy measure for sweat losses. There are, however, several sources of error that may give rise to misleading results, and our aim in this paper is [...]

By |2013-01-31T18:32:29+00:00enero 31st, 2013|Assessment methodologies, Scientific papers|0 Comments

Influence of hydration status on thermoregulation and cycling hill climbing.

creasing the power-to-mass ratio. This study examined the effects of a reduction in body mass attributable to unreplaced sweat losses on simulated cycling hill-climbing performance in the heat. METHODS: Eight well-trained male cyclists (mean +/- SD: 28.4 +/- 5.7 yr; 71.0 +/- 5.9 kg; 176.7 +/- 4.7 cm; VO2peak: 66.2 +/- 5.8 mL x kg(-1) [...]

By |2013-01-31T18:32:29+00:00enero 31st, 2013|Exercise and sport, Scientific papers|0 Comments

The influence of water versus carbohydrate-electrolyte hydration on blood components during a 16-km military march.

The purpose of this study was to identify and to compare the effects of ingesting liquids during a 16-km military march under moderate environmental conditions. Twenty-six volunteer male subjects were randomly divided into two groups. Group GW received water (n=12), and group GP received an electrolytic carbohydrate solution (n=14). Blood and urine samples were obtained [...]

By |2013-01-31T18:32:29+00:00enero 31st, 2013|Exercise and sport, Scientific papers|0 Comments