8 research outputs found
Is carbohydrate needed to further stimulate muscle protein synthesis/hypertrophy following resistance exercise?
Revisiting the roles of protein synthesis during skeletal muscle hypertrophy induced by exercise
Mechanisms of protein synthesis activation following exercise: new pieces to the increasingly complex puzzle
CHUMBO INIBE A ATIVIDADE DE ENZIMAS TIÓLICAS EM ERITRÓCITOS DE TRABALHADORES EXPOSTOS AO METAL.
DOPING SURVEY IN THE YOUTH SCHOOL GAMES IN BRAZIL
<div><p>ABSTRACT Introduction: Doping control is an important means for preventing the use of illegal substances and methods in sports. Objective: This study investigated the self-reported use of illegal substances among young Brazilian students in the Youth School Games, the main sporting event among school-aged athletes in Brazil with almost 2 million students during all the phases. Methods: Cross-sectional study with athletes of the Youth School Games 2006 aged 14-17 years. The subjects were randomly selected and completed an anonymous questionnaire about substances use. Chi-square test was used for comparison of proportions between different variables on self-reported use of substances. Univariate and multivariate analyzes and logistic regression were performed. Results: Among the 402 athletes (aged 14-17) who volunteered to participate, the results showed high prevalence of alcohol (35.8%), nutritional supplements (39.1%), and tobacco (5.4%). Regarding illegal drugs and doping, 1.7% reported the use of stimulants, 2.2% illicit drugs, 0.5% anabolic steroids, and 1.7% hormones and other similar substances. Moreover, a different use of stimulants was found (especially Judo and Table tennis), medications (especially Judo and Chess) and dietary supplements (especially Swimming and Judo, with over 50% reported use). Conclusion: The present study suggests that the use of substances among young athletes is similar to the results found among adult Olympic athletes as per International Olympic Committee and World Anti-Doping Agency, especially regarding the use of dietary supplements, anabolic steroids, and stimulants according to data collected by other studies. We consider that the findings of the present work indicate the need for specific efforts to monitor, prevent, and control use of substances among school athletes in big events and competitions, such as this research on doping in the Youth School Games.</p></div
Doping cosmético: a problemática das aplicações intramusculares de óleos
O doping no mundo esportivo e na subcultura de atletas profissionais e recreacionais de culturismo já é muito conhecido e estudado pela comunidade acadêmica e cientÃfica. Porém, uma nova problemática, que definimos como doping cosmético, inseriu-se há algumas décadas no mundo todo, e tem crescido em importância no Brasil nos últimos anos. Trata-se de injeções sistemáticas de substâncias oleosas por via intramuscular, conhecidas como ADE (vitaminas lipossolúveis A, D e E), com intuito de aumentar volumetricamente o músculo per se, podendo levar a necroses, deformidades fÃsicas ou até mesmo ao óbito. Apresentamos a história do uso cosmético dos preenchedores corporais e revisamos os possÃveis efeitos deletérios e fatais que podem resultar do seu abuso, assim como os mecanismos envolvidos na evolução clÃnica da aplicação destas substâncias. Além disto, apresentamos métodos simples para observação potencial do uso. Pretendemos com este trabalho convocar a classe dos profissionais de saúde para que esta publique relatos de casos quando estes usuários forem atendidos devidos à s complicações de tal uso, visto que os casos que até hoje apareceram são apenas o inÃcio de uma nova problemática de saúde pública que tende a aumentar consideravelmente