Dissertação (mestrado)—Universidade de Brasília, Faculdade de Medicina, 2005. / Submitted by Thaíza da Silva Santos (thaiza28@hotmail.com) on 2009-12-15T20:42:02Z No. of bitstreams: 1 TESE DEFINITIVA Larissa di Oliveira.pdf: 18982586 bytes, checksum: b3e2299ecc8092ef9e64a5c34fef83b6 (MD5) / Approved for entry into archive by Lucila Saraiva(lucilasaraiva1@gmail.com) on 2010-01-15T22:07:49Z (GMT) No. of bitstreams: 1 TESE DEFINITIVA Larissa di Oliveira.pdf: 18982586 bytes, checksum: b3e2299ecc8092ef9e64a5c34fef83b6 (MD5) / Made available in DSpace on 2010-01-15T22:07:49Z (GMT). No. of bitstreams: 1 TESE DEFINITIVA Larissa di Oliveira.pdf: 18982586 bytes, checksum: b3e2299ecc8092ef9e64a5c34fef83b6 (MD5) Previous issue date: 2005-12 / O objetivo deste estudo foi analisar simultaneamente o comportamento de alguns músculos flexores e extensores do cotovelo durante fadiga isométrica do Bíceps Braquial. Foram coletados os EMG dos músculos Bíceps Braquial (BBL), Braquiorradial (BRD), Flexores Superficiais dos Dedos (FSD), Tríceps Braquial (TBL) e Extensores Comuns dos Dedos (ECD). Simultaneamente foram registradas a força de flexão do cotovelo e a força dos dígitos. Foram analisadas as evoluções dos seguintes parâmetros durante o exercício: Freqüência Mediana (FMN), do Ângulo de Queda da FMN (AQ-FMN), do valor do RMS e do Tempo de Resistência (TR). Participaram 12 voluntários do sexo masculino da faixa de 20 a 25 anos, não praticantes de atividade física. O protocolo experimental consistiu na flexão do membro não dominante com o antebraço em supinação e o punho em posição neutra, nos ângulos de 45º, 90º e 135º de flexão de cotovelo, com carga de 30% da Contração Voluntária Máxima (CVM), até a exaustão, em 3 dias diferentes separados por 48 horas. Os resultados mostraram uma intensa atuação do TBL, que apresentou para RMS e FMN, diferenças significativas quando comparado com os outros músculos estudados. Ao contrário do esperado, os músculos flexores apresentaram comportamentos similares entre si. O ECD, entretanto, apresentou comportamento inesperado, similar aos flexores. Foram discutidas as possíveis explicações para esses resultados. _______________________________________________________________________________ ABSTRACT / This study aimed to simultaneously analyze the behavior of some elbow flexors and extensors muscles during Bíceps Brachii isometric fatigue. Surface EMGs were recorded from long head of biceps brachii (BBL), braquiorradial (BRD), flexor digitorum superficialis (FDS), lateral head of triceps brachii (TBL) and extensor digitorum (ED). Force of flexion of the elbow and force of the digits were also recorded. The evolutions of the following parameters during exercise were analyzed: median frequency (FMN), angle of FMN fall, RMS value and resistance time (RT). The sample was composed of 12 male volunteers, aged 20-25 years, not doing physical activity. The experimental protocol consisted of an isometric flexion of the elbow of the not dominant member until exhaustion at 45º, 90º e 135º angles, with a 30% of the Maximum Voluntary Contraction (MVC) load. The forearm was kept in supine and the fist in neutral position. The results showed a sensible activity of the TBL, which exhibited for both RMS and FMN significant differences when compared to the other studied muscles. As expected, the flexor muscles presented similar behaviors between themselves. Otherwise, the ECD presented an unexpected behavior, much similar to the flexors. The possible explanations for these results had been argued.

A dissertation submitted in fulfilment of the requirements for the degree of Master of Science in Physiotherapy in the Faculty of Medicine, University of the Witwatersrand, 1980 / Studies were carried out on muscle specimens from patients with various neuromuscular disorders, including malignant hyperthermia carriers , in order to determine the value of muscle tension tests in the diagnosis of malignant hyperthermia. I t was found that when the results of muscle tension studies were considered together with those of other tests, this technique facilitate d the detection of malignant hyperthermia carriers . When used alone, however, the study of muscle tension could not be regarded as infallibly predictive .

fisiopatch@gmail.com / Revisión por pares

Compensatory hypertrophy was induced on the plantaris (PL) and soleus (SOL) muscles of five week old normal and dystrophic (strain 14.6) hamsters. This was done to indicate whether submaximal exercise would be beneficial in reducing the progression of the muscular dystrophy (i.e., by causing muscle hypertrophy, reducing the total collagen content, and increasing the total protein content of the diseased muscle to approximate that of normal tissue).The hamsters were divided into four groups: 1) dystrophic overload (DO), 2) dystrophic control (DC), 3) normal overload (NO), and 4) normal control (NC). Eight weeks of overload of the PL and SOL muscles was induced by surgical ablation of the synergistic gastrocnemius muscle. Muscle wet weight data indicated significant muscle hypertrophy of 125% and 92% in the NO and DO PL respectively, and 60% in the NO SOL. Dry muscle weight data was comparable to the above results. There was no significant difference in the muscle collagen content between the NC and DC groups. Collagen content increased significantly in the NO and DO PL by 81% and 41% respectively, and in the NO and DO SOL by 127% and 57% respectively. The DC muscle was significantly lower in protein content than the NC muscle (180.2mg/g and 210.1 mg/g respectively) when expressed per g of wet muscle weight. This significance disappears when expressed per g dry muscle weight. The overload caused a significant decrease in the protein content of only the NO group when expressed by both wet and dry tissue weights (171.7mg/g and 678.3mg/g rrespectively). The hydration of the DC group was significantly higher than the NC group. The overload resulted in a significant increase in the water content of only the NO muscle.The results of this study indicate that dystrophic muscle will hypertrophy as indicated by muscle weight data. However, the significance of the data from the total collagen and total protein determination of the overload groups was inconclusive due to the formation of scar tissue. This scar tissue resulted in high collagen content. The high glycine content in this collagen in turn resulted in low protein values.

Inaug.-Diss. Berlin.

Thesis (doctoral)--Ludwig Maximilians-Universität zu München, 1978.

Thesis (Ph. D.)--University of Wisconsin--Madison, 1923. / Typescript. With this is bound: Studies of autolysis : X. The autolysis of muscle / by K.K. Chen and H.C. Bradley. Reprinted from Journal of biological chemistry, vol. LIX, no. 1 (Feb. 1924), p. 151-164. Includes bibliographical references (leaves [33]-[34]).

Thesis (Ph. D.)--University of Wisconsin--Madison, 1984. / Typescript. Vita. eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references (leaves 222-248).

Thesis--University of Wisconsin--Madison. / Typescript. Vita. eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references (leaves 149-160).

Thesis (M.S.)--University of Wisconsin--Madison. / Typescript. eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references (leaves 19-20).