Total body water and its compartments are not affected by ingesting a moderate dose of caffeine in healthy young adult males.

Acute and chronic caffeine intakes have no impact on hydration status (R.J. Maughan and J. Griffin, J. Hum. Nutr. Diet. 16(6): 411-420, 2003), although no research has been conducted to analyze the effects using dilution techniques on total-body water (TBW) and its compartments. Therefore, the aim of this study was to investigate the effects of [...]

By |2017-05-21T03:14:23+00:00junio 20th, 2013|Body water content; body composition, Caffeine and other diuretics, Documentos científicos, Water balance|Comentarios desactivados en Total body water and its compartments are not affected by ingesting a moderate dose of caffeine in healthy young adult males.

Total body water and its compartments are not affected by ingesting a moderate dose of caffeine in healthy young adult males.

Acute and chronic caffeine intakes have no impact on hydration status (R.J. Maughan and J. Griffin, J. Hum. Nutr. Diet. 16(6): 411-420, 2003), although no research has been conducted to analyze the effects using dilution techniques on total-body water (TBW) and its compartments. Therefore, the aim of this study was to investigate the effects of [...]

By |2017-05-21T03:15:33+00:00junio 20th, 2013|Assessment methodologies, Caffeine and other diuretics, Documentos científicos, Hydration status of population groups|Comentarios desactivados en Total body water and its compartments are not affected by ingesting a moderate dose of caffeine in healthy young adult males.

HYDRATION STATUS AND THE DIURETIC ACTION OF A SMALL DOSE OF ALCOHOL

Aim: This study was conducted to examine the effect of consuming a dilute alcohol solution (weak beer) on urine production in euhydrated and hypohydrated individuals. Methods: Twelve males completed an intermittent cycle protocol in hot (35.1 +/- 0.3 degrees C), humid (68 +/- 2%) conditions to dehydrate by 1.9 +/- 0.3% body mass in the [...]

By |2017-05-21T03:21:27+00:00enero 31st, 2013|Caffeine and other diuretics, Documentos científicos|Comentarios desactivados en HYDRATION STATUS AND THE DIURETIC ACTION OF A SMALL DOSE OF ALCOHOL

DOSE RESPONSE OF CAFFEINE ON 2000-M ROWING PERFORMANCE

PURPOSE: To determine whether a dose-response relationship exists between caffeine and 2000-m rowing performance. METHODS: In this randomized, placebo-controlled, double-blind crossover study, 10 competitive male rowers (mean +/- SD: age = 20.6 +/- 1.4 yr, body mass = 87.7 +/- 10.5 kg, height = 186.8 +/- 6.8 cm, (.)VO2peak = 5.1 +/- 0.6 L x [...]

RESTORATION OF FLUID BALANCE AFTER EXERCISE-INDUCED DEHYDRATION: EFFECTS OF ALCOHOL CONSUMPTION

The effect of alcohol consumption on the restoration of fluid and electrolyte balance after exercise-induced dehydration [2.01 +/- 0.10% (SD) of body mass] was investigated. Drinks containing 0, 1, 2, and 4% alcohol were consumed over 60 min beginning 30 min after the end of exercise; a different beverage was consumed in each of four [...]

DIFFERENTIAL EFFECTS OF SAUNA-, DIURETIC-, AND EXERCISE-INDUCED HYPOHYDRATION.

The physiological effects on submaximal and maximal exercise of three methods commonly used by athletes for achieving rapid weight loss were determined by measuring cardiorespiratory variables in 62 nonendurance athletes. A mean weight loss of 4.1% was achieved by those who followed either a sauna (SAU), diuretic (DIU), or exercise (ACT) protocol, compared with the [...]

Fluid, electrolyte, and renal indices of hydration during 11 days of controlled caffeine consumption.

This investigation determined if 3 levels of controlled caffeine consumption affected fluid-electrolyte balance and renal function differently. Healthy males (mean +/- standard deviation; age, 21.6 +/- 3.3 y) consumed 3 mg caffeine . kg(-1) . d(-1). on days 1 to 6 (equilibration phase). On days 7 to 11 (treatment phase), subjects consumed either 0 mg [...]

Rehydration with a caffeinated beverage during the nonexercise periods of 3 consecutive days of 2-a-day practices.

The purpose of this study was to assess the influence of rehydration with a caffeinated beverage during nonexercise periods on hydration status throughout consecutive practices in the heat. Ten (7 women, 3 men) partially heat- acclimated athletes (age 24 +/-1y, body fat 19.2 +/- 2 %, weight 68.4 +/- 4.0 kg, height 170 +/- 3 [...]

The effect of caffeinated, non-caffeinated, caloric and non-caloric beverages on hydration.

OBJECTIVE: To examine the effect of various combinations of beverages on hydration status in healthy free-living adult males. METHODS: In a counterbalanced, crossover manner, 18 healthy adult males ages 24 to 39, on four separate occasions, consumed water or water plus varying combinations of beverages. Clinical guidelines were used to determine the fluid allowance for [...]