Progressive Dehydration during Cycling Increases Skeletal Muscle Glycogenolysis and Perceived Exertion in Hydrated Males.

This study investigated the effects of progressive mild dehydration during cycling on whole body substrate oxidation and skeletal muscle metabolism in recreationally active men. Subjects (n=9) cycled for 120 min at ~65% VO2peak (22.7°C, 32% RH) with water to replace sweat losses (HYD) or without fluid (DEH). Blood samples were taken at rest and every [...]

By |2017-05-21T03:17:19+00:00enero 31st, 2013|Documentos científicos, Exercise and sport|Comentarios desactivados en Progressive Dehydration during Cycling Increases Skeletal Muscle Glycogenolysis and Perceived Exertion in Hydrated Males.

A subjective evaluation of a drinking system for saturation divers.

Studies have shown that divers may lose large volumes of body fluids in hot water suit (HWS) dives lasting for four hours or longer, and that this dehydration is mainly caused by sweating. Body fluid balance may be impaired and the diver's alertness and power of judgement could be influenced by such imbalance. The main [...]

By |2017-05-21T03:17:19+00:00enero 31st, 2013|Documentos científicos, Exercise and sport|Comentarios desactivados en A subjective evaluation of a drinking system for saturation divers.

Assessing the Relationship between Vitamin D(3) and Stratum Corneum Hydration for the Treatment of Xerotic Skin.

Vitamin D(3) has been called the "sunshine" vitamin since the formation of vitamin D is mediated by exposure to sunlight. Vitamin D(3) is linked to many health benefits, however serum levels of vitamin D(3) have been decreasing over the last few decades and the lower levels of vitamin D(3) may have consequences on normal physiology. [...]

By |2017-05-21T03:17:19+00:00enero 31st, 2013|Documentos científicos, Exercise and sport|Comentarios desactivados en Assessing the Relationship between Vitamin D(3) and Stratum Corneum Hydration for the Treatment of Xerotic Skin.

Milk protein and the restoration of fluid balance after exercise.

Sweat is produced during exercise to help dissipate some of the extra heat produced due to an increase in metabolic rate. Inadequate drink ingestion during exercise means athletes finish exercise hypohydrated and when the time between exercise bouts is short, effective rehydration strategies will be necessary to prevent subsequent performance impairment. For complete rehydration, drink [...]

By |2017-05-21T03:16:56+00:00enero 31st, 2013|Documentos científicos, Exercise and sport|Comentarios desactivados en Milk protein and the restoration of fluid balance after exercise.

Glycerol use in hyperhydration and rehydration: scientific update.

Glycerol ingestion creates an osmotic drive that enhances fluid retention. The major practical applications for athletes are to either (i) hyperhydrate befote exercise so that they have more fluid to be lost as sweat during subsequent performance, thereby delaying the progression of dehydration from becoming physiologically significant, or (ii) improve both the rate of rehydration [...]

By |2017-05-21T03:17:21+00:00enero 31st, 2013|Documentos científicos, Exercise and sport|Comentarios desactivados en Glycerol use in hyperhydration and rehydration: scientific update.

Acute effect of oral water intake during exercise on post-exercise hypotension.

Background/objectives: Post-exercise hypotension (PEH) is a sustained reduction in mean arterial blood pressure (MAP) after prolonged exercise. As water drinking is known to elicit a large acute pressor response, we aimed to explore the effect of drinking water during exercise on PEH. Subjects/methods: Ten normotensive male volunteers performed the control protocol: 30 min supine rest, 60 min [...]

By |2017-05-21T03:17:18+00:00enero 31st, 2013|Documentos científicos, Exercise and sport|Comentarios desactivados en Acute effect of oral water intake during exercise on post-exercise hypotension.

Recovery in Soccer: Part I – Post-Match Fatigue and Time Course of Recovery.

In elite soccer, players are frequently required to play consecutive matches interspersed by 3 days and complete physical performance recovery may not be achieved. Incomplete recovery might result in underperformance and injury. During congested schedules, recovery strategies are therefore required to alleviate post-match fatigue, regain performance faster and reduce the risk of injury. This article [...]

By |2017-05-21T03:17:19+00:00enero 31st, 2013|Documentos científicos, Exercise and sport|Comentarios desactivados en Recovery in Soccer: Part I – Post-Match Fatigue and Time Course of Recovery.

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: 25±3y; VO2peak: 54.2±5.1ml·kg-1·min-1; mean±SD) performed cycle exercise in the heat (Wet Bulb Globe Temperature=25.9±0.4ºC) for 90min at 50% VO2peak, 45min after ingesting 355ml of either commercially-available [...]

By |2017-05-21T03:18:11+00:00enero 31st, 2013|Documentos científicos, Exercise and sport|Comentarios desactivados en Effect of Preexercise Soup Ingestion on Water Intake and Fluid Balance During Exercise in the Heat.

Significant and serious dehydration does not affect skeletal muscle cramp threshold frequency.

OBJECTIVE: Many clinicians believe that exercise-associated muscle cramps (EAMC) occur because of dehydration. Experimental research supporting this theory is lacking. Mild hypohydration (3% body mass loss) does not alter threshold frequency (TF), a measure of cramp susceptibility, when fatigue and exercise intensity are controlled. No experimental research has examined TF following significant (3-5% body mass [...]

By |2017-05-21T03:17:44+00:00enero 31st, 2013|Documentos científicos, Exercise and sport|Comentarios desactivados en Significant and serious dehydration does not affect skeletal muscle cramp threshold frequency.

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 ± SD for age and body weight (BW) were 13.1 ± 2.5 years and 46.3 ± 11.5 kg, respectively. Race requirements included: 500 m [...]

By |2017-05-21T03:17:45+00:00enero 31st, 2013|Documentos científicos, Exercise and sport|Comentarios desactivados en Body weight changes in child and adolescent athletes during a triathlon competition.