abril 2013 – Página 2 – Cátedra Internacional de Estudios Avanzados en Hidratación

The Effect of Ice Slushy Ingestion and Mouthwash on Thermoregulation and Endurance Performance in the Heat.

PURPOSE: To establish whether sensory factors associated with cold beverage ingestion exert an ergogenic effect on endurance performance independent of thermoregulatory and/or cardiovascular factors. METHODS: Ten males performed three trials involving 90min steady state cycling (SS) (62% VO2max) in the heat (32.1±0.9°C, 40±2.4% relative humidity) followed by a 4kJ/kg body mass time trial (TT). During [...]

By CIEAH - ICASH|2017-05-21T03:16:34+00:00abril 26th, 2013|Assessment methodologies, Documentos científicos, Environmental conditions, Exercise and sport|Comentarios desactivados

The Effects of High Intensity Intermittent Exercise Compared to Continuous Exercise on Voluntary Water Ingestion.

Water intake occurs following a period of high intensity intermittent exercise (HIIE) due to sensations of thirst yet this does not always appear to be caused by body water losses. Thus, the aim was to assess voluntary water intake following HIIE. Ten healthy males (22±2y, 75.6±6.9kg, VO2peak 57.3±11.4ml.kg-1.min-1) (mean±SD) completed two trials (7-14d apart). Subjects [...]

By CIEAH - ICASH|2017-05-21T03:16:35+00:00abril 26th, 2013|Body water content; body composition, Documentos científicos, Hydration status of population groups, Thirst, Water balance|Comentarios desactivados

Do Heat Events Pose a Greater Health Risk for Individuals with Type 2 Diabetes?

Abstract Chronic medical conditions such as type 2 diabetes may alter the body's normal response to heat. Evidence suggests that the local heat loss response of skin blood flow (SkBF) is affected by diabetes-related impairments in both endothelium-dependent and non-endothelium-dependent mechanisms, resulting in lower elevations in SkBF in response to a heat or pharmacological stimulus. [...]

By CIEAH - ICASH|2017-05-21T03:16:35+00:00abril 26th, 2013|Documentos científicos, Sweat and sweating, Thermoregulation|Comentarios desactivados

Exercise-Associated Hyponatremia and Hydration Status in 161-km Ultramarathoners.

PURPOSE: This work combines and reanalyzes 5 yr of exercise-associated hyponatremia (EAH) research at 161-km ultramarathons in northern California with primary purposes to define the relationship between postrace blood sodium concentration ([Na]) and change in body weight; to examine the interactions among EAH incidence, ambient temperature, and hydration state; and to explore the effect of [...]

By CIEAH - ICASH|2017-05-21T03:16:35+00:00abril 26th, 2013|Documentos científicos, Environmental conditions, Exercise and sport, Hydration status of population groups, Regulation of water and electrolyte balance|Comentarios desactivados

The acute effects of fluid intake on urine specific gravity and fluid retention in a mildly dehydrated state.

Logan-Sprenger, HM and Spriet, LL. The acute effects of fluid intake on urine specific gravity and fluid retention in a mildly dehydrated state. J Strength Cond Res 27(4): 1002-1008, 2013-Many athletes arrive at training sessions and competitions in a mildly hypohydrated (HYPO) state and are instructed to drink fluids before exercise to reach a euhydrated [...]

By CIEAH - ICASH|2017-05-21T03:16:35+00:00abril 26th, 2013|Documentos científicos, Hydration status: effects on physiology and metabolism, Regulation of water and electrolyte balance|Comentarios desactivados

Early and personalized ambulatory follow-up to tailor furosemide and fluid intake according to congestion in post-discharge heart failure.

Congestive heart failure (CHF) worsening is a worldwide cause of rehospitalization and mortality, specially during the early period after hospitalization. Fluid accumulation plays a key role in the pathophysiology of both acute heart decompensation and disease progression. The effective use of drugs to maintain restored clinical stabilization in recently discharged patients is a difficult task, [...]

By CIEAH - ICASH|2017-05-21T03:16:35+00:00abril 26th, 2013|Cardiovascular disease, cardiovascular function, Documentos científicos, Hydration and health, Stroke|Comentarios desactivados

The effect of reducing fluid fasting times on thirst and urine osmolality in women undergoing elective caesarean delivery.

ABSTRACT NOT FOUND http://www.ncbi.nlm.nih.gov/pubmed/23481415

By CIEAH - ICASH|2017-05-21T03:16:36+00:00abril 26th, 2013|Documentos científicos, Hydration status of population groups, Thirst, Water balance|Comentarios desactivados

Hypohydration and acute thermal stress affect mood state but not cognition or dynamic postural balance.

Equivocal findings have been reported in the few studies that examined the impact of ambient temperature (T a) and hypohydration on cognition and dynamic balance. The purpose of this study was to determine the impact of acute exposure to a range of ambient temperatures (T a 10-40 °C) in euhydration (EUH) and hypohydration (HYP) states on [...]

By CIEAH - ICASH|2017-05-21T03:16:36+00:00abril 26th, 2013|Documentos científicos, Environmental conditions, Mental performance, Thermoregulation|Comentarios desactivados

The effect of prescribed fluid consumption on physiology and work behavior of wildfire fighters.

The purpose of this study was to examine 1) wildfire fighters' ability to consume the prescribed fluid volume (1200 mL h(-1)), 2) the effect of fluid intake on plasma sodium and hydration, and 3) the effect of fluid intake on firefighters' heart rate, core temperature and activity during emergency suppression shifts. METHODS: Thirty-four firefighters were [...]

By CIEAH - ICASH|2017-05-21T03:16:36+00:00abril 26th, 2013|Documentos científicos, Hydration status: effects on physiology and metabolism|Comentarios desactivados

The effects of dehydration, moderate alcohol consumption, and rehydration on cognitive functions.

This study investigated the impact of mild-moderate dehydration on alcohol-induced deteriorations in cognitive functions. Sixteen healthy males participated in a single-blind, placebo-controlled cross-over design study involving 4 experimental trials (separated by ≥7 d). In each trial, participants were dehydrated by 2.5% body mass through exercise. After 1 h recovery in a thermo-neutral environment (22 ± 2 °C, 60-70% relative humidity) [...]

By CIEAH - ICASH|2017-05-21T03:16:36+00:00abril 26th, 2013|Documentos científicos, Hydration status of population groups, Mental performance|Comentarios desactivados