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Energy Drinks Do Not Improve Le Parkour Performance: A Randomized Controlled Study

Food and Nutrition Sciences 2016年第4期7卷 338-343页

作者： Diana Madureira Jeferson Oliveira Santana Bruno Avelar cesar augustus de Sousa zocoler Bruno Rodrigues Érico Chagas Caperuto Sã o Judas Tadeu University S&atilde o Paulo Brazil Mackenzie Presbiterian University Barueri Brazil

Le Parkour is a sport where the athletes transpose common day-to-day obstacles in the best possible way. This sport demands elements like strength, focus and decision making;elements supposedly affected by energy drinks, with performance improvement. The aim of this study was to investigate the effects of energy drink ingestion on Le Parkour athlete’s performance. Twelve male amateur athletes, mean age of 23.5 ± 2.74, took part in this randomized, double-blind, placebocontrolled study. Subjects were randomly assigned to drink: 250 ml of energy drink, 500 ml of energy drink or placebo. Forty minutes after the beverage consumption, they were evaluated in a specific circuit performance test (time to complete the circuit) followed by a perceived exertion and a circuit technical difficulty evaluation. We also evaluated heart rate in 3 different moments: rest, pre-circuit and post-circuit. All variables were collected in 3 different experimental days. Time, perceived exertion and technical difficulty were higher in the first day compared to the others. Heart rate did not show a difference when we compared the days. Drinking one or two cans of an energy drink did not improve performance of Le Parkour athletes in a sport specific test. It also did not change heart rate or perceived exertion.

关键词： Caffeine Double Blind Balanced Design Sports Performance Stimulant Drinks

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Qi Gong and Heart Rate Variability: A Systematic Review

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Journal of Biosciences and Medicines 2017年第3期5卷 120-127页

作者： Carla Cristina Ramos Elias de Franca Thatiana Lacerda Nobre Jeferson Oliveira Santana Diana Madureira cesar augustus Sousa zocoler Bruno Rodrigues Ronaldo VTSantos Iris Calado Sanches Erico Caperuto Gepame-Human Movement Laboratory Sao Judas Tadeu UniversitySao PauloBrazil Unifesp-Campus Santos Sao PauloBrazil

Qì Gōng is a type of exercise that involves meditation and is used for health. With a background from the martial arts, it is known also as an auto healing exercise with three main elements according to Traditional Chinese Medicine (TCM): body focus (posture and movement), breathing and mind focus (meditative elements). Heart rate variability is a tool that allows us to measure the autonomic system velocity to detect and respond to unexpected stimuli. So our goal was to build a systematic review of Qi Gong and Heart rate variability. PUBMED, EBSCO and Science Direct data bases were searched. Key terms (MeSH) were Heart Rate Variability and Ch’i Kung OR Qi Gong with a 10-year filter. Four independent reviewers analyzed all articles and excluded duplicated articles, articles in Chinese and articles with no adherence to the subject. The end result was 5 studies selected. Our results showed no significant improvements in HRV with the practice of Qì Gōng, probably because of data heterogeneity. We found 5 types of Qì Gōng, 3 different instruments and different time intervals to measure HRV and 2 different age groups in the studies. We can conclude that there is evidence that Qì Gōng can improve HRV but studies that would use the same parameters are needed to further confirm that.

关键词： Qi Gong Heart Rate Variability Meditation Exercises Exercise Physiology

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Creatine HCl and Creatine Monohydrate Improve Strength but Only Creatine HCl Induced Changes on Body Composition in Recreational Weightlifters

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Food and Nutrition Sciences 2015年第17期6卷 1624-1630页

作者： Elias de Franç a Bruno Avelar Caroline Yoshioka Jeferson Oliveira Santana Diana Madureira Leandro Yanase Rocha cesar augustus zocoler Fabrí cio Eduardo Rossi Fabio Santos Lira Bruno Rodrigues érico Chagas Caperuto University Sã o Judas Tadeu S&atilde o Paulo Brazil Exercise and Immunometabolism Research Group Department of Physical Education Universidade Estadual Paulista (UNESP) Presidente Prudente Brazil Faculty of Physical Education University of Campinas (FEF/Unicamp) Campinas Brazil University Presbiteriana Mackenzie S&atilde o Paulo Brazil

Background: Creatine supplementation is a subject that is very well studied. New forms of creatine are suggesting improvements in this supplement performance. Creatine HCl is supposed to have better solubility and absorption than creatine. The aim of this study was to compare the effects of two different doses of creatine HCl with creatine monohydrate on the strength and body composition in recreational weightlifters and to verify the relationship between strength and body composition. Methods: 40 subjects were divided in four groups: Creatine Monohydrate (CMG) 5 g/daily;Creatine HCl-1 (HCl-1) 5 g/daily, Creatine HCl-2 (HCl-2) 1.5 g/daily and Control group (CG) = 5 g of resistant starch/daily. All groups performed a resistance training program during 4 weeks. Body composition and strength were evaluated pre and post intervention. Results: The 1 RM at the Leg press was increased significantly in all groups (CMG: pre = 264.4 ± 83.8 × post = 298.1 ± 90.9;HCl-1: pre = 295.0 ± 88.3 × post = 338.3 ± 86.8 and HCl-2: pre = 274.3 ± 57.1 × post = 305.7 ± 59.4;p p = 0.003), however, there was no statistically significant difference between groups. Fatmass was significantly decreased in HCl-1 (pre = 14.5 ± 8.0 × post = 13.3 ± 8.3;p = 0.034) and HCl-2 (pre = 13.8 ± 5.8 × post = 12.7 ± 5.6;p = 0.005) but fat-free mass was increased only in HCl-1 (pre = 52.2 ± 8.9 × post = 53.8 ± 8.9;p = 0.031), with no differences between groups again. We observed strong correlations between upper limb strength and fat mass (r = 0.93, p p < 0.05) only in HCl-1 group. Conclusions: We concluded that creatine HCl and creatine Monohydrate improve performance but only creatine HCl induces changes on body composition in recreational weightlifters with differences between creatine HCl doses.

关键词： Creatine Hidrochloride Creatine Resistance Training Fat Free Mass Fat Mass

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Perspectives of the Brazilian Poultry Industry for the Chinese Consumer Market

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Journal of Food Science and Engineering 2012年第1期2卷 24-37页

作者： cesar augustus Winck Miguelangelo Gianezini Clandio Favarini Ruviarot Joao Armando Dessimon Machado Homero Dewes University of West of Santa Catarina Joagaba 89600-000 Brazil Center for Studies and Researches in Agribusiness Federal University of Rio Grande do Sul Porto Alegre 91540-000 Brazil

The objective of this article was to analyze the poultry and derivatives commerce between Brazil and China, taking into account the current market and the perspectives for the next years. The method used was the bibliographic review and analysis of secondary data from different sources, associated with the Market Orientation Theory and the Value Chain Theory. Nowadays, China is Brazil＇s main commercial partner in the international market, but taking into account the chicken meat and its derivatives, having Brazil as the first worldwide exporter and China, the second largest consumer, an effective commercial relationship has not been established yet. To understand the poultry market exchanges between Brazil and China, a framework was built to demonstrate the characteristics and factors found to influence country negotiations, considering current reality and future perspectives. Considering the Theory of Market Orientation, it is concluded that Brazil has effective conditions to consolidate itself as a major supplier of chicken meat and derivatives to China, because it shows determinant characteristics and market factors that allows the association of the national poultry value chain to the demands of the Chinese consumers, but some adjustments are needed in the sphere of international politics.

关键词： Chicken meat market orientation Brazil China agribusiness.

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