In adults treated with hemodialysis, poorer dental health was associated with early death, whereas preventive dental health practices were associated with longer survival.

BackgroundSeveral studies seek to prove the relationship between bruxism and periodontal status although it remains unclear and debatable. We aimed to assess the association between self‐reported (SR) bruxism with the periodontal status in a large scale survey.MethodsA total of 1064 individuals from the southern region of the Lisbon Metropolitan Area (Portugal) were enrolled. Patients were interviewed for the SR bruxism assessment through a self‐report questionnaire. Full‐mouth periodontal status was assessed with probing depth (PD), clinical attachment loss (CAL), gingival recession (REC), and bleeding on probing (BoP) being measured. The American Association of Periodontology/European Federation of Periodontology 2018 case definitions were used. Logistic regression analyses provided information on the influence of SR bruxism towards periodontitis.ResultsSR bruxers exhibited lower prevalence of periodontitis. Additionally, SR bruxers with periodontitis had PD and CAL significantly lower than patients with only periodontitis. Multivariate analysis suggests that SR bruxism was significantly associated with a lower risk of periodontitis (odds ratio [OR] = 0.42 95% CI: 0.32‐0.56). Mean PD and CAL were significantly lower in SR bruxers. When assessing the type of SR bruxism, significant differences among mean PD, CAL, and BoP levels were also identified.ConclusionSR bruxism and periodontal status are negatively associated. SR bruxers exhibit lower odds towards periodontitis and better periodontal clinical characteristics. Further studies are mandatory to clarify these findings.

This study compared the tactical-technical behavior between two distinct situations of reduced volleyball games. The sample consisted of 12 games played by doubles, 6 of which were played in 3.0m x 3.0m (SIT1) and 6 of 2.0m x 4.5m (SIT2) courts. Thus, the behavior of 12 participants, with mean age of 16.7 ± 1.5 years and 3.2 ± 1.2 years of practice, was compared. The results showed that at reception, better results were obtained in adjustment and decision making in SIT2, whereas in SIT1, efficiency was higher; in setting, it was observed that SIT2 presented better results in technical performance, adjustment and efficiency, whereas in SIT1, efficiency was higher; in SIT2, attack, better results were observed in adjustment and decision-making. It was concluded that environmental restrictions influence the behaviors of learners, showing that different ecological contexts provide actions inherent to the specific game environment.Resumo -O estudo comparou o comportamento tático-técnico entre duas situações distintas de jogos reduzidos no voleibol. A amostra constituiu-se de 12 jogos disputados por duplas, sendo 6 praticados em quadras de 3,0m x 3,0m (SIT1) e 6 de 2,0m x 4,5m (SIT2). Assim, comparou-se o comportamento de 12 participantes, com idade média de 16,7 ±1,5 anos e com 3,2 ±1,2 anos de prática. Os resultados mostraram que na recepção houve melhores resultados no ajustamento e na tomada de decisão na SIT2, enquanto que na SIT1 a eficácia foi mais elevada; no levantamento observou-se que a SIT2 apresentou melhores resultados no desempenho técnico, ajustamento e eficiência, enquanto que na SIT1 a eficácia foi mais elevada; no ataque, na SIT2, observou-se melhores resultados no ajustamento e na tomada de decisão. Conclui-se que as restrições ambientais influenciam nos comportamentos dos aprendizes, evidenciando que contextos ecológicos diferentes oportunizam ações inerentes ao ambiente específico de jogo.

The aim was to identify the predictive factors of the attack efficacy of the Brazilian women’s League Champion team according to the level of performance of the opposing team.The sample was composed of the observation of 1137 attacks in 21 games of the 2015-2016 Brazilian women’s Volleyball League champion team. The results were significant to identify the predictive factors of the attack efficacy against high (.2=110.562; .<0.00001), intermediate (.2=64.134; .<0.00001) and low (.2=62.137; .<0.00001) performance opponents. Thus, it is concluded that when playing against high- performance teams, powerful attack for position 6 and second attack tempo increase the chances of attack point; powerful attacks for position 1 and 5 reduce the chances of game continuation; and powerful attack for position 6 increases the chances of blocking. In addition, in games against intermediate-performance teams, reception that allows organized attack without all attack options reduces the chances of attack point and game continuation, while the reception effect did not seem to be a predictive factor of the attack efficacy in games against high- and low-performance opponents and, finally, in games against low-performance teams, powerful attack for position 1 reduces the chances of game continuation and attack blocking.

The present study aimed to analyze the association between effect of reception and game procedures practiced by the women’s “superliga” champion team in the side-out, as well as the behavior of the opposing central blocker, according to the performance level of the opposing team. The sample was composed of the observation of 21 games of the 2015-2016 Women’s “Superliga” champion team. Data were analyzed using the Chi-square test, SPSS software version 20.0 for Windows and significance of p≤0.05. The results showed that there was an association between performance level of the opposing team with the effect of reception (χ2=12.96 and ɸ =0,14, p=0,01), as well the effect of reception with the central blocker disposal (χ2=13.70 and ɸ =0.14, p=0.01), with the attack tempo (χ2=353.27 and ɸ =0.72, p<0.001), with the attack site (χ2=91.05 and ɸ =0.36, p<0.001) and the attack effect (χ2=30.11 and ɸ =0.21, p<0.001) according to the performance level of the opposing team. Together, the results showed that there were differences in the game procedures according to the opposing team classification, contributing to a better understanding of the game played in high-level women’s volleyball.