Influencia de diferentes intensidades de luz en la resistencia de unión de un sistema adhesivo utilizando un colorante fluorescente para su observación

The purpose of this study was to use a fluorescent dye and CLSM microscope to observe the effect of different light intensities on dentin tensile bond strength. Flat dentin surfaces were created on 16 intact human third molars and divided in 4 groups: Group G1 - halogen - KM -200R®; Group G2 - LED - Ultraled®; Group G3 - LED - UltraLume LED5® and Group G4 - LED - Biolux Single V®. For all the groups, the restoration procedure used Single Bond® adhesive, mixed with rodamin B and InTen-S® composite resin. Then, they were cut on serial sections to obtain 1 mm2 area and submitted to micro tensile test and after words, the fractures were analyzed with a digital microscope and CLSM. The statistical analysis showed that all in all groups, except Group G2, which had a significant smaller tensile bond strength ratio. The fracture mode analysis showed that there were significant differences when comparing groups G1 / G2, and G2 / G4. There is no evidence of relevant differences among the other groups. With these results, we conclude that the use of fluorescent dye and CLSM demonstrated to be a simple and nondestructive technique, and that there are evidences that light intensities influenced the dentine tensile.

Qualidade dos fenos de capim-tifton 85 e alfafa sobre a biometria corporal e o desempenho esportivo de cavalos atletas na modalidade de três tambores

Pós-graduação em Zootecnia - FMVZ

A influência da Psicologia do Esporte nos métodos de atuação de técnicos no Desempenho Competitivo de Atletas de artes marciais

As Artes Marciais tiveram, em sua maioria, origem no Oriente, em meados do século XIX, principalmente Japão, Índia e China. No inicio essas Artes apresentavam caráter de defesa pessoal e militar. No entanto a intensificação do contato com o Ocidente e a evolução das armas de fogo, fez com que as lutas que utilizavam apenas o corpo caíssem em desuso, passando a ser usada como uma modalidade esportiva e competitiva. Atualmente tem adeptos no mundo todo que buscam avanços nos aspectos físicos (saúde), motores e psicológicos, ale de aprimorar o autodomínio, superar limites e melhorar o poder de concentração (KODOKAN, 1995). Dentre as modalidades mais difundidas pelo mundo, destacam-se o Karatê, o Kung-fu, o Jiu-Jitsu e o Judô, destas darei maior ênfase nas duas últimas. A Psicologia do esporte é uma área da psicologia que visa promover a saúde, a comunicação, as relações interpessoais, a liderança e a melhora do desempenho esportivo. Artes marciais são modalidades onde são encontrados altos níveis de estresse pelas mais variadas causas, sendo assim uma revisão bibliográfica foi realizada para buscar analisar as variáveis envolvidas e respostas de atletas das modalidades bem como os treinadores envolvidos

Ansiedade e pensamentos automáticos em atletas de basquetebol

Segundo a Confederação Brasileira de Basquetebol (CBB), o basquete é um esporte popular, praticado em todo o mundo por mais de 300 milhões de pessoas. Manoel Tubino (2001, p. 57), aponta é um fenômeno social que atingiu níveis muito complexos de desenvolvimento nas diversas sociedades. Sobre o jovem atleta Cratty (1984) destaca que este acaba vivenciando situações em que seu rendimento, tanto sendo um sucesso como um fracasso se torne visível perante a sociedade, deixando que os sentimentos emocionais e psíquicos se aflorem junto com os fisiológicos influenciando no desempenho. Entre os vários fatores intra e extra quadra que podem influenciar no resultado, estão os aspectos psicológicos e os pensamentos automáticos. Para Cecarelli (2011) um dos fatores que mais afetam os atletas é a ansiedade e está diretamente ligado, a importância da competição e de cada jogo, distância de casa, viagem, mudança de hábitos, adaptação ao clima e fuso horário, entre outros aspectos que provocam possível processamento errôneo do pensamento automático e um aumento da ansiedade. Desta maneira torna-se imprescindível destacar que os aspectos fisiológicos e psicológicos de jovens atletas não se encontram eficientemente maduros para lidar com cobranças e pressões advindas do meio esportivo, cabendo aos sujeitos envolvidos na prática do basquetebol (técnicos, diretores, pais, patrocinadores, psicólogo do esporte e atletas) fazer uso da psicologia do esporte a fim de objetivar-se um bom rendimento. O objetivo deste estudo foi compreender como se dá a relação entre os pensamentos automáticos e a ansiedade. A metodologia deste estudo pautou-se em uma revisão de literatura utilizando os principais referenciais teóricos que circunscrevem os temas principais deste trabalho. Segundo Beck (2005) é tão possível perceber um pensamento, focar nele e avaliá-lo, como é possível identificar e refletir sobre uma sensação...

Alteração da impulsão vertical após o período competitivo em atletas de profissionais de futebol

Change on vertical jump after competitive period in professionals soccer players. Brazilian Journal of Biomotricity, v. 4, n. 2, p. 140-147, 2010. Soccer is a sport that demands different intensities of run, with decisive actions of a match being held in maximum intensity. Vertical jump test is widely used in soccer players due to the strong relationship with speed and agility. Futhermore, there are little information about change on vertical jump after the competitive season in soccer players. The aim of this study was to analyze change on vertical jump after the competitive season in professional soccer players. Took part in this study 21 male athletes (20.82 ± 3.16 years, 72.28 ± 8.74 kg and 179.91 ± 6.14 cm) subscribers to the 4th division of the Paulista championship of 2009. The competitive season had a duration of 20 weeks, with a total of 20 official matchs done. The test used was the counter-movement vertical jump (VJ), that was performed in the first (PRE) and last (POS) training session of the competitive period. After confirmation of data normality by Kolmogorov-Smirnov, the inferential analysis of the results of VJ between PRE and POS was performed using the paired t-test, considering the significance level of 5%. There was a significant increase (p<0,05) on VJ after the competitive period (PRE=54,19±4,46 and POS=57,94±5,23). According to the results of this study, it is possible to increase the performance of VJ in professional soccer players after the competitive period of 20 weeks duration.

A influência da orientação motivacional durante o treinamento de atletas iniciantes no tênis de campo

The motivation in the sport has been one of the most studied subjects nowadays, as much that some authors say that the motivation is the base for the success of an athlete, that is, the psychological part must also well be stimulated so that if it reaches the maximum level of concentration during a game it will obtains the expected result. Tennis is one of the sports that more grew in recent years, and together with this fast ascension also increased the number of interested in researching in this area of the Psychology of the Sport. The present study has as objective to begin the adaptation and validation of the interest scale and to analyze the influence of the motivational orientation of the athletes in the sportive performance of the Tennis through the application of scale Teosq – Task and Ego Orientation in Sport Questionnaire (DUDA, 1992), translated, adapted and validated by Hirota and De Marco (2006), where we can identify if the individual is guided for a task or an ego’s goal. This research was carried through in a situated academy of Tennis in the City of Cotia – SP – Brazil, counting on the participation of 20 citizens with age between 09 and 18 years of both the practicing sexes of Tennis. The calculation of the Alpha Coefficient of Cronbach was adopted as statistical method, in order to identify the trust worthy and validity of the instrument beyond the average of each orientation, to be able to verify the athlete’s motivational orientation. For the analysis of the results, the Alpha Coefficient was observed high, compared with previous studies, reaching values of orientation for the ego of 0,90, and 0,70 of orientation for task. They had been registered the following averages, 4,20 (+0,93) and 2,42 (+0,85), respectively of orientation for task and ego. With those results we can point that, the scale applied with the proposal to identify the motivational orientation of the athletes of Tennis, revealed efficiency, and trust worthy in its application, and in accordance with the results, the athletes are guided for task, revealing self-determination, selfconfident, more creative and they judge its success for the quality of the carried through work.

Ocorrência de lesões de ligamentares e músculo tendíneas ao longo das fases do ciclo menstrual de atletas de alto redimento: um estudo de caso longitudinal

Female athletes are more susceptible to injury when compared with males. This increased risk of injury, may be caused by fertile-menstrual cycle. The aims of this study were to investigate the prevalence in the occurrence of muscle-tendon and ligament injuries in different phases of the menstrual cycle over a period of high performance sports training and identify possible differences of occurrences between the phases. Fifteen female athletes, members of a women's basketball team, with ages between 15 and 22 years (average 17.5 ± 2.6 years), with regular menstrual cycles and daily practitioners of training, received follow-up during the menstrual cycle for 5 months. During the period were noted occurrences of injury in relation to the menstrual period of each athlete. The results showed 13 injuries, all of anterior cruciate ligament. The distribution of percentage values indicated a significantly higher risk of athletes suffer injuries in the follicular phase. The result makes us believe that significant elevations in the concentrations of estrogen in this fertile menstrual cycle phase, more open women to a higher risk of performing different injuries.

Estresse psicológico e desempenho de atletas juniores: uma análise documental

Soccer is one of the most practiced sports in the world, and for many years, some areas of physical education has been doing studies related to the improvement of their income from these areas if this sport psychology. The psychological aspects are very influential and involved in the daily life of an athlete, especially for basic categories of athletes who see in soccer a dream to come true or only a source of income for his family, where such aspects act beneficially or evil for the athlete. Stress, in particular, can appear in various situations and in various ways, and different influences and reactions athlete to athlete, also resulting in physiological changes and variations in performance. Stress, and especially stressful situations, like any psychological aspect should be identified in order to train your athlete to know how to deal with stressful situations. Know what are the stressors, which carries the stress load for the athlete, how to handle the stressful situations, using psychological training in the preseason, know how to use stress management techniques, and be able to manage it all so your athlete reaches an optimal level of income is described in the present work, in order to provide a theoretical and updated reference for professionals of Physical Education, so that they stay up to date on sports psychology and also understand a little more on this subject, which is still little discussed within soccer and often overlooked by many professionals who are already in the context of competitive soccer

Análise da assimetria nas ações motoras em atletas profissionais de futsal

Lateral asymmetries are in everywhere as well as in all movements made by man, which become more evident in movements of sport. The asymmetry is particularly pointed out in futsal when players, even with clear opportunity of making use of their non-preferred foot, try to place the ball in order to execute the action with their preferred foot. The study of asymmetry in futsal is quite relevant, once ambidextrous players present advantages in their performances during a match, which can help futsal athletes not only in their performance improvement but also with the prescription of training. For this reason, the present study had questioned: is there symmetry/asymmetry at the performance of lower contralateral limbs during actions with the possession ball (pass, receiving a ball and kick into the goal) during a futsal match? Thus, the aim of this study was to analyze the symmetry/asymmetry using the preferred and non-preferred foot in actions with the possession ball (pass, receiving and shoot) in adult Futsal's players (professional). The winner team of eight matches of the 2012 FIFA Futsal World Cup was analyzed. An average of 75 players had all their actions (pass, receiving a ball and shot on goal) using their lower limbs during the match analyzed. However, their actions with the head and torso were not analyzed. The games were acquired through a television broadcast. All eight matches were followed by an appraiser through a computer. The Skout® software was used to collect the data, taking notes of the player involved, the type of action (pass, receiving a ball and shot on goal), its foot used (preferred or non-preferred foot) and if the execution was correct or wrong. These data were saved in a text file, in the form of a matrix and imported into the Matlab® software, where was analyzed the following parameters: frequency of occurrence of each action with each foot and quantity of correct and wrong occurrences performed with...

Indicadores de desempenho e percepção subjetiva de esforço entre técnico e atletas de voleibol

The present study has for objective been to know the answers of performance indicators between different positions of volleyball and check for possible relationship between subjective perception referred by coach effort of volleyball athletes during training. Eleven athlete of the feminine sex, during eight weeks, 23 carried through sessions of training and eleven games, inferior members (Vertical Jump) and superiors had been evaluated by means of measures of explosive power in (Throw Medicine Ball), at the beginning and end of each week. For the verification of the subjective perceived of exertion it was used scales proposal for Foster (1998), to the end of each session of training. The collected data had been kept in computer file, producing information in the descriptive plan (measured central and dispersion) and the inferencial for the analysis of variance for the model with a factor complemented with the test of multiple comparisons of Tukey and linear correlation of Pearson. The results present as it has detached: i) the exercises specifics as content of bigger frequency in the training; ii) the test of vertical jump presented difference between the positions and, finally, iii) the subjective perceived of exertion between coach and athlete, he points that the trainer overestimates in 9,76% the perceived of the athletes. Such data are argued how much to the contents of the training as well as the load used in the interior of the process of preparation and monitoring of the training.

Avaliação de um sensor de resistencia eletrica e sua correlação com atributos do solo

The electrical measures of the soil have been used as variables that correlate with its characteristics. This study aimed at developing an electrical capacitance sensor of low cost, to evaluate its performance on the field and verify the correlation between the measurements of electrical capacitance with physical properties (sand, silt and clay) and chemical properties of soil (pH, MO, P resin, H + Al, K, Ca, Mg, SB, CTC and V%) and the moisture content. The data sampling was performed at the farm named "Capão da Onça" which belongs to the State University of Ponta Grossa. The samples collection was conducted in an area of approximately 13 hectares, totalizing 81 samples. In each sampling the electrical capacitance of the soil was measured. After the sensor withdrawal, soil samples were collected and sent to be analysed in the laboratory of the College of Agronomics Science of the Paulista State University. The measuring instrument used to collect data on electric capacitance of the soil a digital multimeter was used. The data were submitted to the analysis of correlation and regression. The developed system presented a low cost and it was capable to measuring variation of the electrical capacitance of the soil. The obtained measures satisfactorily correlated with the levels of clay and sand, and weakly with the moisture content. This had demonstrated the possibility to use a sensor to verify the soil texture in not homogeneous areas. The measures of the electrical capacitance of the soil obtained by the sensor had significantly correlated with the soil attributes: calcium, magnesium, pH, SB and CTC. These results had demonstrated the possibility to use a sensor for soil fertility control.

Além das hashtags: a análise de imagens postadas por atletas no Instagram ® e as diferenças relacionadas ao sexo

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Avaliação da composição corporal e consumo de macronutrientes de mulheres atletas do judô

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Efeitos da suplementação de taurina ou flavonóides de cacau associado à achocolatado sobre a composição corporal, metabolismo de carboidratos e proteinas, desempenho fisico, dano muscular e estresse oxidativo em atletas

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)