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Thesis (Ed.M.)--Boston University.

Made available in DSpace on 2014-06-11T19:34:57Z (GMT). No. of bitstreams: 0 Previous issue date: 2011-07-08Bitstream added on 2014-06-13T18:45:50Z : No. of bitstreams: 1 cipolli_eac_dr_guara.pdf: 441401 bytes, checksum: cc3c201416c280ba0fbbd033bf57a0a5 (MD5) / Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES) / A cada dia as técnicas de reconstrução 3D vêm contribuindo para o levantamento de informações a respeito do movimento esportivo. Este trabalho teve como objetivo desenvolver um sistema de reconstrução 3D, de baixo custo, com câmeras em movimento, para a medição de um movimento submerso. Foi reconstruido o comprimento do membro inferior do nadador ao realizar um movimento de deslize submerso em quatro trechos nadados extrapolando o volume calibrado. O sistema foi composto de duas câmeras submersas com frequencia de captura de 30 Hz, sem ajustes internos, fixadas num dispositivo móvel contruído especificamente para o estudo.Como referência utilizou-se um objeto de calibração com 40 pontos previamente determinados de dimensões 3m x 1,5m x 1m. Foram verificada a precisão e a acurácia do sistema. Os valores de RMS das distancias reconstruídas ficaram entre 1,35cm e2,52cm (RMS% = 1,63%a 3,07%) e os valores de acurácia entre 1,67cm e 2,72cm. Foi aplicado o teste t e verificou-se não haver diferença significativa (p<0,05) entre os valores medidos nos quatro trechos das seis tentativas realizadas pelo nadador. O sistema apresentou medidas consistentes para esse tipo de medição. Pode-se concluir portanto que o sistema mostrou-se confiável e aplicável para futuras medições de movimentos submersos na natação / Each day the techniques of 3D-Reconstruction has contributed to the collection of information about the sports movement. This work aimed to develop a 3DRreconstruction system, low cost, with moving cameras, for measuring a moving underwater. It was reconstructed the length of the swimmer's leg when performing a movement of underwater sliding in four patch extrapolating the calibrated volume. The system was composed of two underwater cameras with capture rates of 30 Hz without internal adjustments, set on a mobile device built specifically for the study. As a reference we used a calibration object with 40 points previously determined dimensions of 3m x 1m x 1.5m. We checked the precision and accuracy of the system. The RMS values of the reconstructed distances were between 1.35 cm and 2.52 cm (RMS% = 1.63% to 3.07%) and accuracy values between 1.67 cm and 2.72 cm. We used test t and there was no significant difference (p 0.05) between the measured values of the four patches of six attempts made by the swimmer. The system showed consistent measures for this type of measurement. It can be concluded therefore that the system was reliable and applicable for future measurements of movements in swimming underwater

The purpose of this study was undertaken first, to determine, in so far as possible, the extent of the growing popularity of swimming throughout Texas; second, to discover what provisions were being made to meet the new demands for more adequate facilities and instruction; third, to reveal the extent of swimming participation in the state; fourth, to reveal data showing the extent and kind of swimming facilities in the state; and fifth, to evaluate the data found.

The purpose of this study was to determine the effect of specialized training on the physical fitness of twelve members of the University of British Columbia Swimming Team. The specialized training consisted of the Basic or General Circuit, the Interval Circuit and the Swim Circuit. The areas of physical fitness that were being considered included dynamic strength, dynamometer or static strength, cardiovascular endurance, breathing capacity, reaction time and ankle flexibility. The subjects were tested on three occasions; first, previous to the commencement of the training programme, second, midway through the competitive swimming season, and finally, at the completion of training. The experiment covered a period of approximately six months. Results were compared for the initial and intermediate tests, the initial and final tests and for the intermediate and final tests. Most notable improvement was shown in dynamic strength, whereas dynamometer strength evidenced no improvement. Significant improvement was also found in reaction time and ankle flexibility, but no improvement was indicated in cardiovascular endurance or breathing capacity. / Education, Faculty of / Curriculum and Pedagogy (EDCP), Department of / Graduate