Página 30 – Cátedra Internacional de Estudios Avanzados en Hidratación

Plasma volume changes with movement to supine and standing positions.

The chronology of hemoconcentration and hemodilution associated withÂ changesÂ in posture, and the reliability of venous hematocrit (Hct), hemoglobin (Hb), andÂ plasmaÂ proteins (PP) as indicators in evaluatingÂ changesÂ inÂ plasmaÂ volumeÂ were determined in seven male subjects. Red cell mass was also measured by the CO method at the termination of the erect andÂ supineÂ positions.Â Movementto and fromÂ supineÂ and erectÂ positionsÂ produced consistent, rapid, and progressiveÂ changesÂ in Hct, Hb, [...]

By CIEAH - ICASH|2017-05-21T03:18:11+00:00enero 31st, 2013|Body water content; body composition, Documentos científicos|Comentarios desactivados

Body weight changes in child and adolescent athletes during a triathlon competition.

We examined young athletes during a triathlon performed in a hot climate. Complete or partial data were available for 95 athletes competing in the National Triathlon Championship in Costa Rica. Mean Â± SD for age and body weight (BW) were 13.1 Â± 2.5 years and 46.3 Â± 11.5 kg, respectively. Race requirements included: 500 m [...]

By CIEAH - ICASH|2017-05-21T03:17:45+00:00enero 31st, 2013|Documentos científicos, Exercise and sport|Comentarios desactivados

The effect of beverages varying in glycaemic load on postprandial glucose responses, appetite and cognition in 10-12-year-old school children.

Reducing glycaemic index (GI) and glycaemic load (GL) inconsistently improves aspects of cognitive function and appetite in children. Whether altering the GL by lowering carbohydrate relative to protein and fat has a role in these effects is unknown. Therefore, we assessed the differential effects of beverages varying in GL and dairy composition on appetite, energy [...]

By CIEAH - ICASH|2017-05-21T03:18:11+00:00enero 31st, 2013|Children, Documentos científicos|Comentarios desactivados

Analysis of dehydration and strength in elite badminton players.

BACKGROUND. The negative effects of dehydration on aerobic activities are well established. However, it is unknown how dehydration affects intermittent sports performance. The purpose of this study was to identify the level of dehydration in elite badminton players and its relation to muscle strength and power production. METHODOLOGY: Seventy matches from the National Spanish badminton [...]

By CIEAH - ICASH|2017-05-21T03:17:46+00:00enero 31st, 2013|Documentos científicos, Exercise and sport|Comentarios desactivados

Effect of Preexercise Soup Ingestion on Water Intake and Fluid Balance During Exercise in the Heat.

PURPOSE: To determine whether chicken noodle soup before exercise increases ad libitum water intake, fluid balance, and physical and cognitive performance compared with water. METHODS: Nine trained men (age: 25Â±3y; VO2peak: 54.2Â±5.1mlÂ·kg-1Â·min-1; meanÂ±SD) performed cycle exercise in the heat (Wet Bulb Globe Temperature=25.9Â±0.4ÂºC) for 90min at 50% VO2peak, 45min after ingesting 355ml of either commercially-available [...]

By CIEAH - ICASH|2017-05-21T03:18:11+00:00enero 31st, 2013|Documentos científicos, Exercise and sport|Comentarios desactivados

Hydration status and fluid and sodium balance in elite Canadian junior women’s soccer players in a cool environment.

Dehydration can impair mental and on-field performance in soccer athletes; however, there is little data available from the female adolescent player. There is a lack of research investigating fluid and electrolyte losses in cool temperatures. Therefore, the purpose of this study was to investigate the pretraining hydration status, fluid balance, and sweat sodium loss in [...]

By CIEAH - ICASH|2017-05-21T03:17:46+00:00enero 31st, 2013|Documentos científicos, Electrolytes, hyponatraemia|Comentarios desactivados

Relationship between thirst perception and plasma arginine vasopressin concentration in man.

We examined the possibility that measurements of thirst perception in man using the visual Analogue Scale (VAS) can be used to estimate plasma arginine vasopressin concentration in man. In thirty normal subjects (male=15 and female=15), thirst perception (TP, cm) was rated and 5.0ml blood samples were collected for the measurement of plasma arginine vasopressin (PAVP) [...]

By CIEAH - ICASH|2017-05-21T03:18:09+00:00enero 31st, 2013|Documentos científicos, Thirst|Comentarios desactivados

Estimation of dehydration using bioelectric impedance in children with gastroenteritis.

By CIEAH - ICASH|2017-05-21T03:18:09+00:00enero 31st, 2013|Assessment methodologies, Documentos científicos|Comentarios desactivados

Water-deficit equation: systematic analysis and improvement.

BACKGROUND: The water-deficit equation {WD(1) = 0.6 — B(m) — [1 - (140 · Na(+))]; B(m) denotes body mass} is used in medicine and nutrition to estimate the volume (L) of water required to correct dehydration during the initial stages of fluid-replacement therapy. Several equation assumptions may limit its accuracy, but none have been systematically [...]

By CIEAH - ICASH|2017-05-21T03:17:43+00:00enero 31st, 2013|Assessment methodologies, Documentos científicos|Comentarios desactivados

The effects of Ramadan intermittent fasting on athletic performance: Recommendations for the maintenance of physical fitness.

Abstract. The behavioural modifications that accompany Ramadan intermittent fasting (RIF) are usually associated with some alterations in the metabolic, physiological, and psychological responses of athletes that may affect sport performance. Muslim athletes who are required to train and/or compete during the month-long, diurnal fast must adopt coping strategies that allow them to maintain physical fitness [...]

By CIEAH - ICASH|2017-05-21T03:18:10+00:00enero 31st, 2013|Documentos científicos, Exercise and sport|Comentarios desactivados