Abstract INTRODUCTION: Brazil’s western Amazon basin has the highest prevalence of hepatitis B virus (HBV) infection in the country. Coinfection with hepatitis D virus (HDV) is also endemic. To estimate the prevalence of HBV and HDV markers in a population inhabiting the northwest portion of Mato Grosso state in the western Amazon. METHODS: We performed a cross-sectional study of the seroprevalence of antibodies against HBV core antigen (anti-HBc) in the Três Fronteiras District northwest of Mato Grosso. Anti-HBc-positive subjects were tested for HBV surface antigen (HBsAg). Those positive for this marker were tested for HDV antibodies. Anti-HBc-negative participants were tested for anti-HBsAg. All tests were performed by EIA. RESULTS: A total of 623 individuals in the community were assessed; the majority (67.6%) were male, with a mean age of 30.8 ± 15.4 years. Two hundred and fourteen individuals (34.3%) were anti-HBc-positive, and 47 (7.5%) were HBsAg carriers. Only one individual was anti-HDV-positive. Among the 409 individuals without HBV infection, 18.3% were anti-HBsAg-positive. There was no association between HBV infection and known risk factors. CONCLUSIONS: The study area had intermediate-to-high endemicity for HBV infection, but a low prevalence of HDV. Our serological results suggesting low vaccination-induced protection indicate a need for reinforced immunization programs in the populations of northwest Mato Grosso.

BACKGROUND The longstanding application of insecticides for vector control without periodic monitoring of the population response to these chemicals can directly drive the selection of resistant populations of vector mosquitoes. Tocantins is the newest state of the Brazilian Federation. Despite a historically high number of dengue cases, studies and monitoring data concerning insecticide resistance in the state are lacking. OBJECTIVES To verify the resistance status of Aedes aegypti from 10 populations distributed throughout the state connected by rivers and roads. METHODS Between 50 and 150 ovitraps were installed in house gardens within each municipality. Collection points were established based on the importance of the towns and on geographic aspects. Dose response bioassays were performed in accordance with World Health Organization guidelines. Molecular assays were conducted to detect kdr mutations, which are related to pyrethroid resistance. FINDINGS Of the 3,200 ovitrap paddles analysed, 25.8% contained eggs, with a total of 55,687 eggs collected. With the exception of Caseara, all evaluated populations were considered to be resistant to temephos. The data showed different levels of resistance to deltamethrin among the samples. Caseara and Guaraí showed the lowest RR95 values. On average, the NaVR1 kdr allele was most frequent (40.3%), followed by NaVS (38.1%), and NaVR2 (21.6%). Palmas, the capital of the state, had the highest frequency of kdr alleles (87.5%). MAIN CONCLUSIONS With the exception of Palmas, the towns with the highest indexes (ovitrap positivity, number and density of eggs), as well with high levels of resistance and kdr alleles were located along the BR-153 road, indicating that the flow of people and cargo can contribute to the dispersion of the vector and potentially resistance. This study contributes substantially to knowledge regarding the insecticide resistance profile of Tocantins mosquito populations; the data generated via the study could facilitate the judicious use of insecticides by vector control programs.

O presente estudo centra-se na análise da comunicação não-verbal dos instrutores de fitness com recurso à metodologia observacional e objetiva a análise das configurações e padrões temporais (T-patterns) de comportamento cinésico e proxémico de instrutores com diferentes níveis de experiência profissional. Participaram neste estudo 12 instrutores de fitness divididos em dois grupos em função da sua experiência profissional: grupo de instrutores experientes (n = 6); grupo de instrutores estagiários (n = 6). As sessões de exercício foram filmadas e os comportamentos cinésicos e proxémicos dos instrutores codificados com recurso ao Sistema de Observação da Comunicação Cinésica - Fitness (SOCIN-Fitness) e ao Sistema de Observação da Comunicação Proxémica - Fitness (SOPROX-Fitness). Os resultados obtidos revelaram a existência de padrões temporais de comportamento cinésico e proxémico, próprios de cada grupo de instrutores. Foi possível verificar que os instrutores experientes apresentam um comportamento cinésico e proxémico mais consistente e complexo do que os estagiários, caraterizado pela regulação do comportamento dos praticantes, através do acompanhamento na realização dos exercícios a partir da posição correspondente, e da intercalação de comportamentos de informação e de feedback, com recurso à utilização de uma morfologia de gestos mais diversificadas.

The present study focuses on the analyses of the fitness instructors’ non-verbal communication using the observational methodology and it aims the analysis of the configuration and temporal pattern (T-patterns) of kinesics and proxemics behaviour, considering different levels of professional experience. 12 fitness instructors participate in this study, divided in two groups accordingly with their professional experience: expert group (n = 6); novice group (n = 6). The exercise classes were videotaped and fitness instructors’ behaviours coded using the Observational System for the Kinesics Communication of the Fitness Instructor (SOCIN-Fitness) and the Observational System for the Proxemics Communication of the Fitness Instructor (SOPROX-Fitness). The results revealed the existence of kinesics and proxemics temporal patterns of communication distinct for each group of instructors. It was possible to verify that expert instructors have a more consistence and complex kinesics and proxemics behaviour than the novices, which was characterized by the regulation of exerciser´s behaviour, throughout their participation in exercise from a correspondent position, and the intercalation of behaviours to inform and give feedback, using more diverse morphologies of gestures.

No futebol, a comunicação durante a competição é a forma que o treinador utiliza para transmitir informação com o objetivo de otimizar o rendimento dos jogadores. Pretendemos caracterizar e comparar os comportamentos de instrução dos treinadores de times de jogadores infanto-juvenis e adultos. Foram filmados dez treinadores (cinco de equipes infanto-juvenis e cinco de equipes de adultos) em dezenove jogos. O sistema de observação para recolha de dados relativos ao comportamento de instrução foi o SAIC. Os resultados obtidos demonstram a existência de diferenças entre os treinadores de equipes infanto-juvenis e de adultos no que diz respeito à instrução, à atenção e ao comportamento motor reativo.

During soccer competitions, coaches communicate with the players to address information that should optimize performance of the players. Our purpose is to characterize and compare the coach behaviors during instruction to adults and scholastic teams. Ten coaches (five from scholastic soccer teams and five from adult teams) were videotaped during nineteen games. The observation system used for data collection of instruction behaviors was the SAIC. The results indicate the existence of differences between coaches from scholastic soccer teams and five from adult teams with regard to instruction, attention and reactive motor behavior.

Este estudo procurou compreender o processo e os critérios considerados na avaliação de desempenho dos treinadores pertencentes a nove clubes desportivos da Região Autônoma da Madeira, Portugal. Foi utilizada uma metodologia de carácter qualitativo, com recurso à análise documental da estrutura, dos recursos humanos dos clubes e a uma entrevista semiestruturada realizada aos diretores com responsabilidades na avaliação dos treinadores. Os resultados ilustram um processo de avaliação não estruturado, baseado em informações pouco sistematizadas e rigorosas. Os critérios de avaliação mais relevantes foram os resultados desportivos dos atletas, seguidos das competências de liderança e competências pessoais e sociais do treinador.

This study aims to understand the process and the criteria evolved in the performance appraisal of coaches of nine sport clubs in the Autonomous Region of Madeira, Portugal. The methodology used was based on a documentary analysis of the human resources of the institution and it was carried out a semi-structured interview done to the directors responsible for the performance appraisal of the coaches. The results show a less structured evaluation process, based on poor and inaccurate organization data. The most relevant criteria in the evaluation process were the sports scores of athletes, followed by the leadership skills and personal and social skills of the coach.