Consumo de carboidratos e lipídios no desempenho em exercícios de ultra-resistência

Ferreira, Antonio Marcio Domingues; Ribeiro, Beatriz Gonçalves; Soares, Eliane de Abreu

doi:10.1590/s1517-86922001000200005

Cited by 8 publications

(9 citation statements)

References 29 publications

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“…The CHO are the energetic substrate for long-duration aerobic activities, but the body organic reserves of glycogen are limited, and may be totally depleted in athletic events of this nature. Thus, it may be advantageous to optimize lipid use (FFA) as source of energy, sparing the glycogen reserve for the final stages of the competition 1,18 .…”

Section: Mct and Exercisementioning

confidence: 99%

A influência da suplementação de triglicerídeos de cadeia média no desempenho em exercícios de ultra-resistência

Ferreira

Barbosa

Ceddia

2003

Rev Bras Med Esporte

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Section: Mct and Exercisementioning

confidence: 99%

A influência da suplementação de triglicerídeos de cadeia média no desempenho em exercícios de ultra-resistência

Ferreira

Barbosa

Ceddia

2003

Rev Bras Med Esporte

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“…Clark (1998), among other studies, argues that due to the large energy expenditure in training, the ultra-endurance athletes should consume 70% or more of carbohydrates in their diet, especially the week before the competition [51]. Ferreira (2001) complements the statement verifying that currently, it is preferable to recommend the consumption of carbohydrates in grams per kilogram of body weight, and the amount estimated for ultra-endurance athletes would be 7-10 grams per kilogram of weight [52]. Lambert, et al (1997) suggest that dietary lipid-based adaptation (meals containing more than 70% fat) from 2 to 4 weeks prior to ultra-endurance events with an intensity that goes from slow to moderate (<70% VO2max) may improve performance [53].…”

Section: Pré-competition Supplementationmentioning

confidence: 99%

“…So in addition to a well-directed physical training, the athlete needs to consume an adequate amount of energy to sustain the demand of physical effort [52].…”

Section: During Competition Supplementationmentioning

confidence: 99%

“…Through advances on studies about nutritional resources, Ferreira (2001) have found that carbohydrates present in sport bars, and stockers gel in energy drinks (which are also electrolyte replacers) further effectively enhance performances, before and during competitions [52]. And yet, according to the author, the concentration of carbohydrates in these repositories varies between 40 and 80%, being mainly composed of malt dextrin, glucose, sucrose and fructose, which quickly provide large amounts of available energy.…”

Section: During Competition Supplementationmentioning

confidence: 99%

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Effects of Carbohydrates Supplementation and Physical Exercise

R¹,

Mg²

2015

Journal of Nutrition and Health Sciences

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IntrodutionCarbohydrates are the most abundant biomolecules on Earth. They are important for muscle contraction during prolonged exercise performing at moderate intensity and short duration exercise performed at high-intensity [1,2]. There is a considerable amount of studies related to the ergogenic effects of nutritional resources in sport performance [3]. Based on this evidence, this article aims to review the physiological and biochemical concepts and definitions of carbohydrates; searches for a relation between the consumption of carbohydrates and daily studies; and mainly analyzes the relations between consumption of carbohydrates and physical performance, analogously before, during and after the competition. To conduct the study was first done a widespread research looking for articles and scientific studies, and after that the research was filtered using up-to-date articles. The power of an athlete directly influences his physical performance [4]. In the pre-competition stage stored glycogen increases and prevents from depletion [5]. Supplementation during competition aims to replenish lost fluids and carbohydrates [6]. After a competition it is necessary to rehydrate, fill glycogen stores and recreate an electrolyte balance [3]. Literature reviews are important connectors that have been studied ….. where the science must advance. More research should be done to get to know the ideal carbohydrate intake appropriate for each sport.Carbohydrates, as the name suggests, are made up of water (H 2 O) and carbon, where hydrogen and oxygen are bonded together by a simple connection. They are the most abundant biomolecules on earth [2]. Carbohydrates are important for muscle contraction during performance of prolonged exercise at moderate intensity and high-intensity exercise with short duration [1]. Knowing this, the quest for improvement of the physical performance has increasingly led athletes to use dietary manipulation and nutrients intake. The maintenance of muscle glycogen stores is extremely important for high-performance athletes, where regular physical training and proper nutrition can positively affect the increase of these reserves [7]. Although it is clear that the increased use of nutritional supplements aims to muscle hypertrophy and improves the performance, many questions about the proper use of the supplements haven't yet been discussed. Due to evidences suggesting the importance of glycogen during performances, there is a great interest in maintaining inventories related with the level of glycogen in muscle and liver, thus it is generally recommended carbohydrate intake for athletes performing long term sports, due to their rapid metabolism [3]. Checking literature, we found a considerable amount of studies looking at the effects of nutritional ergogenic resources on exercise performance. Only in the 80s was conclusively demonstrated that ingesting carbohydrates during exercise can increase the athletes' performances. Also the correct and sufficient quantity of nutrients for athlete consumption ...

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“…No homem adulto, grande parte dos carboidratos é armazenada no fígado e nos músculos, sob a forma de glicogênio e, em menor parte, sob a forma de glicose sangüínea. A glicose pode ser rapidamente mobilizada a partir do glicogênio durante o exercício 37,38 . Tarnopolsky et al 2 observaram as concentrações de glicogênio muscular de 15 atletas, 7 homens e 8 mulheres, após 4 dias de dieta com 75% do valor energético total (VET) de carboidratos.…”

Section: Diferenças Na Utilização De Carboidratosunclassified

Metabolismo energético em atletas de endurance é diferente entre os sexos

2007

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Atletas de endurance têm suas necessidades energéticas aumentadas devido ao seu alto gasto energético durante o exercício. Contudo, ainda não estão claros quais são as diferenças do metabolismo energético entre os sexos e se essas diferenças vão implicar em mudanças em suas dietas. Sendo assim, o objetivo deste trabalho foi reunir informações da literatura sobre as diferenças entre os sexos em relação ao metabolismo energético em atletas de endurance. Alguns estudos demonstram que, durante exercício de longa duração, as mulheres utilizam como fonte de energia maior quantidade de lipídeos e menor de carboidratos e proteínas, quando comparadas aos homens. Já outros autores não encontraram diferença entre os sexos na proporção dos substratos metabolizados, mas sim nos tipos de lipídeos utilizados. Essa diferença na utilização de substratos vem sendo relacionada a distintas concentrações de alguns hormônios entre homens e mulheres, como: 17β-estradiol, progesterona, testosterona, epinefrina, norepinefrina, hormônio de crescimento, insulina e glucagon. Também foi observado que os atletas aumentam seus estoques de glicogênio quando consomem dieta com sobrecarga glicídica, enquanto que as atletas apenas têm seus estoques de glicogênio aumentados quando ingerem dieta com sobrecarga glicídica e hiperenergética. Esse achado é bastante relevante, pois a concentração de glicogênio está diretamente ligada ao rendimento do atleta durante o exercício de endurance. Portanto, a literatura sugere que há diferenças entre os sexos quanto à utilização de substratos em atletas. Porém, novos estudos são necessários para melhor esclarecimento do metabolismo energético dos atletas de endurance possibilitando, assim, a adequação de suas recomendações nutricionais.Termos de indexação: alimentos para praticantes de atividade física; atletas de endurance; metabolismo energético; sexo. A B S T R A C TEndurance athletes have higher energy needs because they spend a lot of energy during exercise. However, the metabolic differences between genders and if these differences will imply in dietary changes are still not clear.

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Consumo de carboidratos e lipídios no desempenho em exercícios de ultra-resistência

Cited by 8 publications

References 29 publications

A influência da suplementação de triglicerídeos de cadeia média no desempenho em exercícios de ultra-resistência

A influência da suplementação de triglicerídeos de cadeia média no desempenho em exercícios de ultra-resistência

Effects of Carbohydrates Supplementation and Physical Exercise

Metabolismo energético em atletas de endurance é diferente entre os sexos

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