Sweat Rate
Mostrando 1-12 de 29 artigos, teses e dissertações.
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1. Time motion analysis of football (soccer) referees during official matches in relation to the type of fluid consumed
The aim of the present study was to determine the effect of volume and composition of fluid replacement on the physical performance of male football referees. Ten referees were evaluated during three official matches. In one match the participants were asked to consume mineral water ad libitum, and in the others they consumed a pre-determined volume of miner
Brazilian Journal of Medical and Biological Research. Publicado em: 2011-08
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2. Desempenho e termorregulação de corredores jovens e de meia-idade com VO2 máx similar em corridas de intensidades fixa e autorregulada em ambientes quente e termoneutro
In order to compare the heat exercise performance between middle-aged and young runners with similar VO2peak using self-paced and fixed workload intensity, 26 endurance runners; seven men (MA_M: 54 ± 2 years; 58 ± 4 ml.kg-1.min-1) and six middle-aged women (MA_W: 54 ± 4 years; 48 ± 3 ml.kg-1.min-1); seven men (YO_M: 28 ± 1 years; 61 ± 5 ml.kg-1.min-1)
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 2011
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3. Estado de hidratação , sudorese e reidratação durante uma sessão de treino no calor em jovens praticantes de diferentes esportes / Hydration state, sweat rate and re-hydration during a training session in the heat among young participants of different sports
A prática de esportes, muito recomendada aos jovens, é muitas vezes realizada em dias de calor, o que pode comprometer a saúde e o desempenho, caso ocorra a desidratação. OBJETIVO: avaliar o estado de hidratação pré- e pós- sessão usual de treino, a ingesta hídrica e sudorese (volume e concentração eletrólitos) de jovens durante uma sessão de
Publicado em: 2011
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4. Effect of age and gender on sweat lactate and ammonia concentrations during exercise in the heat
The dependence of sweat composition and acidity on sweating rate (SR) suggests that the lower SR in children compared to adults may be accompanied by a higher level of sweat lactate (Lac-) and ammonia (NH3) and a lower sweat pH. Four groups (15 girls, 18 boys, 8 women, 8 men) cycled in the heat (42ºC, 20% relative humidity) at 50% VO2max for two 20-min bout
Publicado em: 2010
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5. Efeito do protetor solar sobre a fadiga durante a corrida com exposição ao sol
Sunscreens may be water and sweat resistant, but it is unknown if they affect the production, secretion and evaporation of sweat and, hence, impair human thermoregulation. During prolonged or mild duration exercises, mainly those carried out in hot environments, thermoregulation plays a key role in the development of fatigue. If sunscreens indeed interfere w
Publicado em: 2009
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6. O uso do boné em crianças durante a corrida de intensidade auto regulada sob o sol diminui a temperatura média da cabeça, mas não influencia a velocidade da corrida
The aim of this study was to test the hypothesis that the use of the cap could be a barrier to sun radiation, allowing less heat storage during the self paced race of 6 km under sunlight. Nineteen children of both sexes, inhabitants of tropical region, healthy and able to practice physical exercise (10.3 ± 0.7 and 10.2 ± 1.0 years old, 148 ± 6 and 145 ±
Publicado em: 2009
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7. Raspar a cabeça aumenta o estresse fisiológico em homens durante exercício sob o sol
The purpose of the present study was to test the theory that human hair could represent a barrier to solar radiation, allowing minor physiological indices of heat stress during exercise in a hot environment under the sun. Participated in this study 10 male volunteers, inhabitants of tropical region, healthy and fit for the practice of physical exercises (25,
Publicado em: 2008
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8. Efeito das diferenças sexuais e da capacidade aeróbica na resposta sudorípara de homens e mulheres
Human capacity to dissipate heat in hot environments depends mainly on sweat secretion and evaporation. Studies have shown that men have greater sweating capacity and produce more sweat in response to similar stimulation than women. However, due to sexual dimorphism and typical differences in VO2máx, it is not known yet if sudorific differences are really s
Publicado em: 2007
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9. Suplementação com aminoácidos de cadeia ramificada (AACR): efeitos sobre o desempenho físico no calor em humanos
There are evidences that serotonin is linked to central fatigue processes and in hyperthermic stress its activity is enhanced. In order to diminish central serotonergic activation and improve performance, nutritional strategies with branched-chain amino acids (BCAA) has sought to prevent tryptophan influx to CNS, because these amino acids compete amongst the
Publicado em: 2007
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10. Use of different forms of soybeans in dairy cows feeding / Utilização da soja em diferentes formas na alimentação de vacas leiteiras
The research was carried out to evaluate the in situ ruminal degradation and the intestinal digestibility of raw and roasted soybeans and the effect of diets containing different forms of soybeans on the consumption, nutrient digestibility, production and milk composition, variation in pH and ruminal N-NH3 concentration, urea excretion in urine, concentratio
Publicado em: 2007
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11. Effect of age and gender on sweat lactate and ammonia concentrations during exercise in the heat
The dependence of sweat composition and acidity on sweating rate (SR) suggests that the lower SR in children compared to adults may be accompanied by a higher level of sweat lactate (Lac-) and ammonia (NH3) and a lower sweat pH. Four groups (15 girls, 18 boys, 8 women, 8 men) cycled in the heat (42ºC, 20% relative humidity) at 50% VO2max for two 20-min bout
Brazilian Journal of Medical and Biological Research. Publicado em: 14/11/2006
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12. Luteal phase of the menstrual cycle increases sweating rate during exercise
The present study evaluated whether the luteal phase elevation of body temperature would be offset during exercise by increased sweating, when women are normally hydrated. Eleven women performed 60 min of cycling exercise at 60% of their maximal work load at 32ºC and 80% relative air humidity. Each subject participated in two identical experimental sessions
Brazilian Journal of Medical and Biological Research. Publicado em: 21/08/2006