Revista Brasileira de Nutrição Esportiva

Number 33, 2012

165-167
A IMPORTÂNCIA DA ELETROQUÍMICA PARA COMPREENSÃO DE ESTUDOS BIOQUÍMICOS

Authors: Diego Nunes Navarro

Abstract

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Number of views: 479

Editorial

168-177
EFEITOS DE UM PRODUTO TERMOGÊNICO SOBRE PARÂMETROS BIOQUÍMICOS E MORFOLÓGICOS RELACIONADOS À SAÚDE: UM ESTUDO DE CASO

Authors: Adilson Domingos dos Reis Filho, José Carlos Amaral Filho, Eliana Santini, Christianne de Faria Coelho-Ravagnani, Fabrício Azevedo Voltarelli, Carlos Alexandre Fett

Abstract

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This study aimed to analyze the effects of a thermogenic product on biochemical and morphological parameters of an individual with non-alcoholic hepatic steatosis moderate. Was performed assessment of body composition, glycemic profile, lipid, inflammatory biomarkers and liver markers. The volunteer had an “ad libitum” diet. He remained sedentary for eight weeks while he had ingesting a thermogenic supplement for seven days a week. The energy expenditure was estimated using an accelerometer. There was a reduction in FPG: -13.8%; HbA1c: -3.3%, TC: -9.2%, LDL-c: -13.7%, TG: -25.7%; the TGO: -27.9%; of TGP: -35.5% and TNF-α: -7.7%, increased HDL-C: 4.5% and maintenance of IL-6. As for body composition, there was a reduction in body weight: -1.2%; fat mass: -7.9%; fat percentage: -5.1%, waist circumference: -1.5% and body mass index: -1.7%. It was observed after eight weeks of administration of a thermogenic product an improvement in metabolic parameters related to health of the volunteer. Key words: Nutrition, Biochemistry, Health.

178-185
O PERFIL ALIMENTAR E ANTROPOMÉTRICO DE COMPETIDORES ELITE DE CORRIDA DE ORIENTAÇÃO

Authors: Larissa Santos Nunes, Karen Mello de Mattos, Tereza Cristina Blasi, Thiago Durand Mussoi, Rodrigo Muradás

Abstract

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This study aims to verify the food profile of usual and pre-competition breakfast of elite level competitors through a cross-sectional research. The subjects were 28 male athletes of the elite level aged from 19 to 48 years. The data were collected at the South American Orienteering Championship in December, 2010. We carried out individual interviews and applied an instrument with identification and anthropometric data: Weight, Height, Body Mass Index and Waist Circumference. The second instrument presented closed questions about nutritional variables and 24-hour dietary recall for usual and pre-competition breakfast. The anthropometric data were classified according to the Ministry of Health (2008). In pre-competition breakfast, the consumption was 3.16g/kg/day carbohydrates, 0.53g/kg/day proteins and 0.92g/kg/day lipids, all below the recommended amount. The eutrophia was prevalent in 93% of the participants, 100% had waist circumference according to the recommended patterns, 75% did not have nutritional counseling and 46% reported to be adequate to consume proteins associated to carbohydrates in pre-competition. Despite eutrophia and waist circumference being in accordance with the recommended patterns, the absence of nutritional counseling promoted inadequate food consumption at usual breakfast and pre-competition breakfast. Researches to investigate the food profile of this population, including the daily food habit, can contribute to sport nutrition, allowing and make visible the need to have a nutritionists included in orienteering sports. Key Words: Sport Nutrition, Nutritional Evaluation, Orienteering Athletes.

186-192
PERFIL NUTRICIONAL DE TENISTAS AMADORES

Authors: Brisa Rubi Ramires, Erick Prado de Oliveira, Gabriela Kaiser Fullin Castanho, Rodrigo Minoru Manda, Mara Cléia Trevisan

Abstract

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This study aimed to evaluate the nutritional profile of tennis players. The sample consisted of 14 tennis players aged 20 to 35 years old. For the anthropometric profile, body weight and height were measured, and the Body Mass Index (BMI) and body fat percentage (%BF) were estimated. For food intake evaluation, a 24-hour recall was applied. The players were eutrophic, according to BMI (23.4 kg/m2) and had normal %BF (13.8%). Energy intake was adequated; however, had an excess of lipids (32.3 ± 6.1 %) and proteins (2.51 + 0.87g/kg) intake and insufficient carbohydrates (5.83 + 1,98g/kg) intake were found. It was concluded that the tennis players showed adequate body composition; however, food intake was inadequate, which may affect negatively their performance. Key words: Tennis, Body composition, Diet.

193-201
EFEITOS DA SUPLEMENTAÇÃO DE GLUTAMINA NO EXERCÍCIO FÍSICO: REVISÃO SISTEMÁTICA

Authors: Letícia Simon, Rafaela Liberali

Abstract

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The glutamine is the amino acid more abundant in skeletal muscle and its use is essential for various body cells. Owing to its plasma and tissue concentration are decreased after prolonged exercise, suggests that supplementation with glutamine brings benefits for practice of exercises. This work aimed to show through a systematic review the effects of glutamine supplementation in exercise. The articles search was performed using the keywords glutamine, supplementation and exercise, the following databases: U.S. National Library of Medicine (PubMed), Scientific Electronic Library Online (SciELO), Capes periodicals, Science Direct, Medigraphic, Google academic, University libraries. Were analyzed studies from 1998 to 2010, and 11 were used in the final sample. Most studies that evaluated the effect of glutamine on the immune system and improves performance found no significant effects. The studies evaluating the effects on gluconeogenesis, acid-base balance and synthesis / degradation protein also found little effect. Thus, after analysis of studies, it was found that although some studies have found benefits of glutamine supplementation, most observed little or no effect in the different parameters evaluated. Key words: Glutamine, Dietary suplements, Exercise.

202-214
A INFLUÊNCIA DO LEITE NA PERDA DE PESO E NA COMPOSIÇÃO CORPORAL DE MULHERES ACIMA DO PESO PRATICANTES DE ATIVIDADE FÍSICA AERÓBIA

Authors: Vanessa Aparecida de Santis, Antonio Coppi Navarro, Felipe Fedrizzi Donatto

Abstract

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Objective: Investigate the influence of two types of milk and its derivatives in the changes of the corporal composition as reduction of the fat and increase of the muscular mass. Methodology: Observational and experimental research performed with overweight women who practice physical exercises. Data were collected for age, anthropometric, dietary habits and physical exercise. The women were divided into three groups with different diets: 1 - cow's milk, 2 - soy milk and 3 - no dairy products. Results: There were five women, mean age 38.6 years (± 12.34) and initial weight of 95.28 kg (± 13.71). After the diet therapy intervention, two women, one receiving bovine milk and another soy milk, lost weight, percentage of body fat and gained lean body mass, when collected data from the balance; whereas with the measurement of skinfolds, beyond the two students, another participant who ingested soy milk lost body fat. Conclusion: There was loss of fat mass and lean mass gains in participants receiving diets with bovine milk and soy milk, no significant differences between them; so we can’t conclude that a protein is better than another in change of body composition. Key words: obesity, milk, diet, fat mass.

215-222
INFLUÊNCIA DA SUPLEMENTAÇÃO DE BICARBONATO DE SÓDIO NO DESEMPENHO ANAERÓBIO EM ATLETAS DE FUTEBOL

Authors: Priscila Cassi Crivelaro

Abstract

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Football is characterized as an intermittent physical activity, with requests for various energy sources. Several studies have investigated the ergogenic action of buffering substances in intermittent exercise in order to delay fatigue. Objective: To determine whether supplementation with sodium bicarbonate enhances anaerobic performance in football players of a professional team. Methods: 30 male football players were tested for anaerobic power by Baker test on two non consecutive days. They ate 0.3 g • 1 kg of body weight of sodium bicarbonate (NaHCO 3) or placebo (2 g of NaCl), in each of the experimental procedures 90-120 min before testes. The variables analyzed were: blood lactate, rating of perceived exertion (PSE) and fatigue index (FI). Results: No significant difference in blood lactate concentration. The PSE and the FI were significantly lower (p <0.05) after ingestion of NaHCO3. Discussion: The results obtained were similar to studies using supplementation of alkalizing substances in anaerobic exercises. Conclusion: NaHCO3 supplementation was shown to be an efficient method to improve the performance of repeated sprints in football players. Key words: Football, sodium bicarbonate, anaerobic, supplementation.

223-227
AVALIAÇÃO DA PERDA HÍDRICA DE PRATICANTES DE ATIVIDADE FÍSICA DE DUAS MODALIDADES DIFERENTES DE UMA ACADEMIA DE SÃO PAULO

Authors: Daniela D’Amico Silvestre de Castro

Abstract

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Introduction: The practice of physical exercise provides an increase of sweating. The dehydration can compromise your performance during an exercise and increase the risks associated with physical effort and heat. Objective: The purpose of this study was to calculate the percentage of water loss and the index of sweating in the practitioners of physical activity in a Gym of Sao Paulo. Materials and Methods: 17 practitioners, females, aged between 20 and 50, who were attending 40 min Jump and Spinning classes were evaluated. All practitioners were weighed on a digital scale, before and after class. They received a questionnaire of hydration with 8 questions. Results: The results show that the middle index of sweating discovered in the Jump class was 6,7 ml/min and 4,4 ml/min in the Spinning class. The most common symptom was the post-exercise exhaustion (47,1%). Discussion: The questionnaire showed that 82,4%, the majority, was drinking water at that time and 52,9% did not show any sign of dry mouth. Conclusion: In the event of longer classes, some of the practitioners could suffer from dehydration, may reaching a severe dehydration. Key word: dehydration, exercise, physical activity, sweating

228-233
DESIDRATAÇÃO NA ATIVIDADE LABORAL DOS CORTADORES DE CANA

Authors: Jefson Pedro da Silva

Abstract

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This study aimed at evaluating the levels of dehydration of sugar cane harvesters by their weight, with individuals of both sexes aged between 20 and 51 years. The research is characterized as pre-experimental. Body weight was collected using a mechanical scale Welmy with an anthropometric ruler made of anodized aluminum, scaled of 2.00 m and 0.5 cm wide, with a degree of acuracy of 100g, being the data recorded on an individual sheet of paper. To be performed the statistical test, used the "t" test of Student for independent samples or Friendman’s analysis of variance to check differences between quantitative variables. The level of significance was p <0.05. 30 harvesters of sugar cane aged 20 to 51 years took part in the study, divided into two groups of 60% (18) males and 40% (12) females. The results found in the analysis of variation in body weight in each gender (intragroup) were that both males and females of the 1st to the 4th weight were significantly reduced (0.00 **), and the coefficient of variation showed that males had the highest percentage of weight drop and consequent dehydration and in the analysis of variation in body weight, with no significant differences between the sexes at all times. There is uniformity in weight loss in both sexes. It can be concluded that the results showed and confirmed that dehydration has no distinction between the sexes and that a prolonged activity in very hot environments even with fluid intake can lead to dehydration which impairs the continuity of the activity. Key Words: sugar cane harvesting, hydration, dehydration and body weight.

234-240
GRAU DE DESIDRATAÇÃO APÓS TREINAMENTO EM ATLETAS DE FUTEBOL DA CATEGORIA SUB-18

Authors: Gabriel da Silva Pereira, Renata Gomes Navarro Kachvartanian, Rafaela Liberali, Francisco Navarro

Abstract

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The study aimed to observe the dehydration in male athletes in football, during the youth, using the monitoring of the mass / body weight and contribute information to improve performance. The research character is pre-experimental, whose proposed intervention type is before - after. The study sample was composed of twenty players in the under-18 Mato Grosso Sport Clube (Union Sports Club) in the city of Rondonopolis / MT, of these, fifteen were selected because they meet certain criteria. The study population has an average age of 16.4 years, height 1.69 cm, with percentage fat and BMI 12.08 and 26.6. The value of body weight was collected before and after two training sessions on different days with balance and fluid intake was collected using a measuring cup from the moment of arrival at the training center for training and training order. These data were collected on days of normal training. For data analysis we used the "t" Student test for paired samples and p <0.05 as significance level. As a result, the mean body weight found, reported a decrease in body weight (65.25 and 64.46 pre-to post-training) when hydration occurred spontaneously. When performed an orientation and regular breaks, these data had a small changes, for example, body weight remained more balanced (pre 65.3 to 64.7 in the post-workout). Although not a significant difference occurs, it is concluded that the pre and post values have not changed, especially the second time after a guidance and recommendation for fluid intake during exercise. Key Words: Dehydration, football, training, performance, body weight.

241-245
PERFIL DE ADERÊNCIA E PERMANÊNCIA DE ALUNOS DE PERSONAL TRAINER DA CIDADE DE CUIABÁ

Authors: Jéssica Melo Guimarães

Abstract

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Number of views: 417

The goal with this work is to show the adherence and permanence shown by pupils who workout with a personal trainer in Cuiaba using a questionnaire with questions about the motivation that takes them to this personal trainer modality. This questionnaire identifies that most of the population who choose this kind of training are woman, married people, with a bachelor degree. Health, esthetic, physical and psychological well-being is what people look to improve. Personal training makes these goals to be achieved with a higher motivation and encouragement. Nowadays, after a busy day, when people gets home all they want to do is resting, and this is moment when the personal trainer rol becomes important motivating people to pursue to train periodically, exclusive and commitment with schedule to beat challenges, fighting stress caused by job and a regular day. Based on the results obtained, we can conclude that the main motivation of adherence and permanence with personal trainer are: personal training, esthetic, fast results, commitment with the schedule, medical advice, healthy aging, training variation, periodical evaluation and motivation. All of these needs together turn the personal training even more significant. Key Words: Adherence, Permanence, Personal trainer.