20 resultados para Exercícios físicos Aspectos fisiológicos - Teses
Resumo:
The Lusiads is an epic poem, written by Lus de Cames, about the adventure of Vasco da Gama s trip and the history of Portugal. It's based on traditionals epics from the Greek and Roman poets, Homero and Virglio. Cames followes especially their structures. However, the poet insert modifications that divert his poem from parameters established by Aristteles for the classic epic poems. These deviations are centered mainly on the narrative subject and in the point of view. We intend to show an analysis focused on digressions from The Lusiads, in which the author, himself or by tellers characters, narrates the story in order to make his complaints, reflections and exhortations. Besides, we present general aspects of Maneirismo predominant in these digressions how evidences of modernity of the poem; as one brief outlook about the poem's projection in time and around the world. These points are importants elements of consolidation of a universal permanence of The Lusiads. That's why they have had to read and to study by the centuries, according the vision of the epoch's spirit
Resumo:
In the present work, we have studied the nature of the physical processes of the coronal heating, considering as basis significant samples of single and binary evolved stars, that have been achieved with the ROSAT satellite. In a total of 191 simple stars were studied, classified in the literature as giants with spectral type F, G and K. The results were compared with those obtained from 106 evolved stars of spectral type F, G and K, which belong to the spectroscopic binary systems. Accurate measurements on rotation and information about binarity were obtained from De Medeiros s catalog. We have analysed the behavior of the coronal activity in function of diverse stellar parameters. With the purpose to better clarify the profile of the stars evolution, the HR diagram was built for the two samples of stars, the single and the binary ones. The evolved traces added in the diagram were obtained from the Toulouse-Geneve code, Nascimento et al. (2000). The stars were segregated in this diagram not only in range of rotational speed but also in range of X-ray flux. Our analysis shows clearly that the single stars and the binary ones have coronal activity controlled by physical process independent on the rotation. Non magnetic processes seem to be strongly influencing the coronal heating. For the binary stars, we have also studied the behavior of the coronal emission as a function of orbital parameters, such as period and eccentricity, in which it was revealed the existence of a discontinuity in the emission of X-rays around an orbital period of 100 days. The study helped to conclude that circular orbits of the binary stars are presented as a necessary property for the existence of a higher level ofX-rays emission, suggesting that the effect of the gravitational tide has an important role in the coronal activity level. When applied the Kolmogorov-Smirnov test (KS test ) for the Vsini and FX parameters to the samples of single and binary stars, we could evidence very relevant aspects for the understanding of the mechanisms inherent to the coronal activity. For the Vsini parameter, the differences between the single stars and the binary ones for rotation over 6.3 km/s were really remarkable. We believe, therefore, that the existence of gravitational tide is, at least, one of the factors that most contribute for this behavior. About the X-rays flux, the KS test showed that the behavior of the single and the binary stars, regarding the coronal activity, comes from the same origin
Resumo:
Introduo: A asma se tornou um problema de sade pblica devido aos seus grandes custos em cuidados de sade. Os exercícios respiratrios constituem uma interveno no farmacolgica de baixo custo e baixo risco que vem sendo utilizada por fisioterapeutas em diferentes pases no tratamento de pacientes asmticos. Objetivo: Avaliar a eficcia dos exercícios respiratrios no tratamento de pacientes adultos com asma nos seguintes desfechos: qualidade de vida, sintomas da asma, nmero de exacerbaes agudas, episdios de hospitalizao, mensuraes fisiolgicas (funo pulmonar e capacidade funcional), nmero de consultas mdicas, nmero de faltas no trabalho devido a exacerbaes da doena, avaliao subjetiva do paciente em relao interveno. Mtodo: Reviso sistemtica de estudos controlados randomizados com metanlise realizada em parceria com a Colaborao Cochrane. As seguintes bases de dados foram consultadas: the Cochrane Central Register of Controlled Trials (CENTRAL), MEDLINE, EMBASE, CINAHL, AMED, e PsycINFO, alm de busca manual em revistas da rea e em resumos de congressos. Os seguintes termos foram utilizados: (breath*) and (exercise* or retrain* or train* or re-educat* or educat* or physiotherap* or "physical therap*" or "respiratory therapy" or buteyko ). As listas de referncias dos estudos selecionados e registros de ensaios clnicos tambm foram consultados. A seleo dos estudos e a avaliao do risco de vis dos estudos includos foram realizadas de maneira independente por dois revisores. O software Review Manager foi utilizado para anlise dos dados, no qual o modelo de efeito fixo foi utilizado. As variveis contnuas foram expressas como diferena de mdia ponderada com um intervalo de confiana de 95%. A heterogeneidade dos resultados dos estudos includos foi realizada por meio da anlise dos Forest plots. O teste qui-quadrado (Chi2) com um P valor de 0.10 foi utilizado para indicar significncia estatstica. O ndice de heterogeneidade (I2) foi implementado com um valor acima de 50% como um nvel substancial de heterogeneidade. Resultados: 13 estudos envolvendo 906 pacientes esto atualmente includos na reviso. Os seguintes desfechos foram mensurados pelos estudos includos: qualidade de vida, sintomas da asma, nmero de exacerbaes agudas e funo pulmonar. Os estudos relataram uma melhora na qualidade de vida, sintomas da asma e nmero de exacerbaes agudas. Seis dos onze estudos que avaliaram funo pulmonar mostraram uma diferena significativa favorvel aos exercícios respiratrios. No houve relato de efeitos adversos. Devido heterogeneidade substancial encontrada entre os estudos, metanlise foi possvel apenas para sintomas da asma, a qual incluiu dois estudos e mostrou uma diferena significativa favorvel aos exercícios respiratrios. A avaliao do risco de vis foi prejudicada devido ao relato incompleto de aspectos metodolgicos pela maioria dos estudos includos. Concluso: Embora os resultados encontrados pelos estudos includos demonstraram individualmente que os exercícios respiratrios podem ser importantes no tratamento da asma, no h evidncia conclusiva nesta reviso para suportar ou refutar a eficcia desta interveno no tratamento de pacientes asmticos. Este fato foi devido s diferenas metodolgicas entre os estudos includos e ausncia de relato de aspectos metodolgicos por parte da maioria dos estudos includos. No h dados disponveis em relao aos efeitos dos exercícios respiratrios nos seguintes desfechos: episdios de hospitalizao, nmero de consultas mdicas, nmero de faltas no trabalho devido a exacerbaes da doena, e avaliao subjetiva do paciente em relao interveno
Resumo:
Techniques of mind & body control seem to benefit human organism in general and cognition in particular, because they involve a mindfulness practice. However, there is still a scarcity of studies with well-controlled methods to investigate the possible effects of Yoga practice. In this study, we investigated the effects of regular Yoga practice, based on Yoga postures (asanas), breathing techniques, and meditation exercises, on memory and physiologic and psychological parameters related to quality of life. There were significant improvements on performance tasks of short term memory and long term memory. We also observed significant beneficial effects on psychological and physiological parameters such as mood, anxiety, depression, stress, and modulation of the autonomic nervous system in Yoga practitioners group compared to the conventional physical exercises group. The results suggest the possible influences of stress, emotional state and mental training on cognitive effects of yoga practice. Our results support the indication of practice of Yoga for the treatment or prevention of stress, psychological disorders and their possible cognitive consequences
Resumo:
This research aims to make a reflective analysis about the academic production originated in the stricto sensu post graduation programs in the country, produced in the period of 1990 to 2010, in the field of History of Mathematics, especifically on works about the History of Mathematics in Mathematics education and that present pedagogical proposals that make use of the History of Mathematics in order to teach Mathematics. Defending the thesis that the researches on mathematics education with goals turned to the use of didactic proposals related to the history of mathematic that take in consideration the coherency between epistemological aspects inherent to mathematics history and anthological elements materialized on the conceptions of mathematics and mathematics history and of apprenticeship (implicitly or explicitly exposed) may originate significant contribution to the field of history of mathematics on education. Among these, nine were Masters Degree dissertations and five PHDs theses. The reflective analysis was accomplished from two matrixes; one from theoretical nature and the other, ontologic nature, elaborated from the pretexts of Sanches Gamboa, about the epistemological analysis from academic production in the field of Mathematics Education and the following theoretical perspectives in the field of History of Mathematics Education, that are: linear evolutionary theory, structural construtivist operative, evolutionary discontinuous, historical and socialcultural investigation and the use of activities estimulating the usage of verbal and nonverbal expressions. These perspectives were based on the works of Miguel and Miorim, Mendes and Radford. As results, we have detected some established dissonances between the categories related to theoretical and ontologic levels and the pedagogical proposal presented in these researches. On the other hand, we have discovered works that are able to establish consonances between the theoretical and ontological elements and the presented pedagogical proposal. These works carry significative contributions to the field of History of Mathematics applied to Mathematics pedagogical practice, inclusively presenting significative theoretical elements to the production of knowledge recognized as scientific in the Mathematics field
