Introduction: The reduced number of studies published on the occurrence of injuries in futsal in Portugal motivated this study. Objective: This study aimed to identify potential causes of injuries in this sport, which can be a reference for the creation of specific protocols for injury prevention. Methods: The sample was composed of 411 Portuguese male and female futsal players, of diverse competitive levels. All the participants filled out a previously validated questionnaire, based on retrospective information. Statistical inference consisted of inferential analysis using the Kruskal-Wallis test and using the MannWhitney test for non parametric data (significance level of 5%). Results: The results confirm ankle sprain injuries as the injury with the highest incidence (48.8% of total) in futsal. Injuries with recovery period between 8 and 28 days were the most frequent (52.7% of total). This study did not show gender or the position of the player on the pitch to cause significant differences on the frequency of the injuries or on the type or anatomical region of the injury. However, there were significant differences between training and competition, with greater occurrence of sprains and contractures during training and higher incidence of muscle tears and fractures in competition, with a longer recovery period resulting from injuries suffered during competition. Moreover, there were significant differences for the mechanism of injury, with higher incidence of bone or joint injuries, sprains and fractures as a result of contact with opponents and higher incidence of muscle or ligament injuries without contact with opponents. The results did not show any significant differences in the laterality of injuries. Conclusion: The results highlight the importance of specific programmes for ankle sprain injury prevention, especially in early stages, regardless of the position of the player on the pitch, mainly in situations of contact with opponents.

Flow is an optimal psychological state, a very positive experience associated with high levels of performance in various areas of human activity such as sports. This study sought evidence for the construct validity of the Brazilian version of FSS-2 and, in this way, contribute with theoretical and empirical resources for the research and professional practice of Brazilian psychologists in the field of sports and physical exercise. This instrument provides a global measure and specifically measures nine dimensions of the flow experience. The participants were 366 athletes, men and women, 16-41 years of age, who played futsal, handball, volleyball and rugby and disputed the University Games Gaúchos 2015. The scores of the subjects were subjected to Confirmatory Factor Analysis. Indices of content, factorial, convergent and discriminant validities and internal consistency were found, discussed according to theoretical and empirical data from this line of research. We conclude that the general adjustments of the model were close to those obtained in the original studies.

Introduction: Understanding the recovery in response to different sprint protocols is important for optimizing neuromuscular gains and organizing training sessions in sports. The current study aimed to investigate acute neuromuscular changes following a moderate volume of sprint protocols with and without change-of-direction. Methods: 26 well-trained male collegiate athletes from different sports were randomly allocated into straight-line group (SLG) or change-of-direction group (CODG). The protocols were 1 Â 15 repetitions of 20-meter sprints in line (SLG) or with two changes in each repetition (CODG). Knee extension maximal and explosive strength, jump performance, serum creatine kinase, and quadriceps and hamstrings echo intensity were collected pre-, post-0, 24, 48, and 72 h post-exercise. Results: There were no significant changes in any of the variables at any time point after the exercise protocols in comparison with pre-exercise values (p > 0.05). Conclusions: The present study suggests that sprint training with moderate volume with or without change of direction does not induce neuromuscular or physiological changes during 72 h post-exercise. This information is especially important for sports staff in order to optimize training prescription and frequency.

A insatisfação corporal, preditora de transtornos alimentares, é a desaprovação do indivíduo pela sua própria aparência física. Este estudo examinou esta variável em 303 estudantes,  de seis a 14 anos idade, do Ensino Fundamental de Porto Alegre/RS.  Cada participante indicou a silhueta mais parecida com seu corpo e a mais desejada numa Escala de Silhuetas, também foi calculado o Índice de Massa Corporal para cada indivíduo. Como insatisfação corporal foram consideradas as diferenças entre os escores das silhuetas autopercebidas e desejadas. A insatisfação corporal apareceu a partir de 10 anos para meninas e foram encontradas diferenças sexuais na forma de experimentar esse sentimento. Possivelmente, maturação física e fatores psicossociais explicam esses achados.

Este estudo buscou promover uma validação de constructo da Escala de Liderança para o Esporte, de Chelladurai e Saleh (1978, 1980), versão preferência de liderança, com dados de 706 atletas brasileiros de futebol, judô, natação e atletismo de ambos os sexos. Os participantes da pesquisa pertenciam a diversos clubes esportivos do Rio Grande do Sul. Além disso, na tentativa de produzir uma validação de critério para o instrumento, foram testadas as relações entre a preferência de liderança dos atletas e a dependência e a variabilidade da tarefa, o gênero e a idade dos atletas, prescritas no Modelo Multidimensional de Liderança para o Esporte. As respostas dos atletas ao instrumento foram processadas através do SPSS com análise fatorial, coeficiente alfa de Cronbach e MANOVA. Em geral, os resultados forneceram razoável confirmação à estrutura original da escala, porém a fidedignidade da subescala comportamento autocrático ficou aquém do aceitável. Na discussão, são apresentadas sugestões para a reformulação de alguns itens.