Resumo O objetivo do estudo foi comparar o desempenho tático, técnico e a percepção subjetiva de esforço de jogadores de futebol universitário em jogos reduzidos através da manipulação de pequenos alvos. Vinte jogadores, divididos em quatro times, realizaram jogos de 5x5 (espaço:25x20 m) com um e com dois pequenos alvos, em diferentes dias. Os jogos foram divididos em três tempos de quatro minutos, com dois minutos de intervalo entre os tempos. Foi avaliada a percepção de esforço e variáveis técnico-táticas, utilizando a Velocidade de Transmissão da Bola (bolas recebidas/contatos na bola) e o Procedimento de Avaliação do Esporte em Equipe (TSAP). O TSAP gera indicadores de desempenho, como: índice de eficiência, escore de performance, volume de jogo e ataque com bola. Eles estão relacionados às ações de bolas conquistadas, passes e finalizações. Para análise estatística foi realizado teste t pareado e o tamanho do efeito d de Cohen para comparar as duas configurações de jogo. Foi verificada uma maior quantidade de bolas conquistadas com um pequeno alvo (p<0,05; d=1,32), gerando maior índice de eficiência e escore de performance. Conclui-se que a percepção de esforço é a mesma com um ou dois pequenos alvos e que um pequeno alvo faz com que os jogadores recuperem mais bolas. Através dessas informações o treinador pode manipular melhor este tipo de constrangimento de acordo com o objetivo da sua sessão de treino.

Abstract The purpose of this study was to compare the tactical and technical performance and perceived exertion of college soccer players in small-sided games through the manipulation of small targets. Twenty players divided into four teams, played 5x5 games (25x20 m) with one and two small targets on different days. Games were divided into three four-minute times, with two-minute intervals between bouts. Perceived exertion and technical-tactical variables were evaluated using Ball Transmission Speed (ball received/ball contacts) and Team Sport Assessment Procedure (TSAP). TSAP generates performance indicators, such as: efficiency index, performance score, volume of play and ball attack. They are related to the actions of balls conquered, passes and finalizations. For statistical analysis, paired t test and Cohen’s d effect size were performed to compare the two game configurations. Larger number of balls conquered with small target was verified (p<0.05; d=1.32), generating higher efficiency index and performance score. It was concluded that the perceived exertion is similar with one and two small targets and players recover more balls with only one small target. Through thisinformation, coaches can better handle this type of constraints according to the purpose of the training session.

ABSTRACT The Pantanal is the world's largest wetland biome with a seasonal flood pulse that attracts a great diversity of birds, many of which are migratory. Birds can be natural reservoirs Influenza A, West Nile and Newcastle Disease viruses. However, the occurrence of carriers for these viruses in the Pantanal was not verified yet. The present study evaluated the occurrence of natural infection by Influenza A, WN and ND virus of birds in the municipality of Poconé, a subregion of the Pantanal in the state of Mato Grosso, Brazil. A total of 76 birds belonging to 11 orders and 20 families were captured using mist nets. The most representative order was Passeriformes, followed by the other nine orders, which included Columbiformes, Psittaciformes, Charadriiformes and Anseriformes. The most representative family was Thamnophilidae, with 16 individuals (21.0%), followed by the family Tyrannidae with 10 individuals (7.6%) and the family Furnariidae, with eight individuals (10.5%). The bird species were identified, and cloacal and tracheal swab samples were collected. The samples were subjected to RNA extraction and tested for the presence of the three agents by real-time polymerase chain reaction (qRT-PCR). All the sampled birds were considered healthy, had no clinical sign of infection, and were tested negative for the three viruses. Based on our findings, we can conclude that Influenza, West Nile and Newcastle Disease viruses were absent from the samples in this region of the Pantanal wetlands during the period of this study.

Brazil is one of the world's largest countries with a rich diversity of wildlife, including resident and migratory wild birds, which may be natural reservoirs of the Newcastle disease virus (NDV). Because Brazil is a major global exporter of chicken meat, the emergence of such a disease may have a huge negative impact not only on the economy due to trade restrictions and embargoes, but also on the quality of life of the population. Samples were collected from 1,022 asymptomatic domestic and wild birds from the Brazilian coast and the Amazon region using tracheal/cloacal swabs and tested by RT-qPCR. The results showed 7 (0.7%) birds were positive for NDV. The positive samples were then isolated in embryonated chicken eggs and their matrix protein genes were partially sequenced, revealing a low-pathogenicity NDV. This study confirms the maintenance of the velogenic-NDV free status of Brazil.