Browsing by Author "Portela, Ana"
Now showing 1 - 5 of 5
Results Per Page
Sort Options
- Avaliação de técnica auxiliar de diagnóstico para planeamento cirúrgico apoiado em biomodelosPublication . Costa, Sónia; Queijo, Luis; Meles, V.; Portela, Ana; Vasconcelos, MárioA perda de osso tem sido uma grande limitação para a colocação de implantes. Diferentes técnicas e materiais têm sido desenvolvidos na tentativa de conseguir regeneração óssea. Atualmente, o médico dentista tem ao seu dispor diferentes meios auxiliares de diagnósticos, que permitem quantificar pormenorizadamente a regeneração óssea, melhorando a planificação da localização para a colocação dos implantes. As técnicas de biomodelação apresentam enormes benefícios, permitindo a visualização e manipulação física tridimensional de partes da anatomia de um paciente, sob a forma de modelos anatómicos e o fabrico de ferramentas tais como guias cirúrgicas. O processo de biomodelação associa a tecnologia de fabrico aditivo aos procedimentos de segmentação de imagem de forma a obterem-se modelos físicos das áreas anatómicas desejadas.
- Energy cost and intra-cyclic variation of the velocity of the centre of mass in breaststrokePublication . Lima, Francisco; Portela, Ana; Soares, Susana; Gonçalves, Pedro; Machado, Leandro; Lima, António B.; Barbosa, Tiago M.; Keskinen, Kari L.; Fernandes, Ricardo J.; Vilas-Boas, João PauloThe purpose of the present study was to analyse the relationship between energy cost (C) and intra-cyclic speed fluctuations(dv) in breaststroke.
- Relationship between energy cost, swimming velocity, speed fluctuation in competitive swimming strokesPublication . Barbosa, Tiago M.; Lima, António B.; Portela, Ana; Novais, Daniel; Machado, Leandro; Colaço, Paulo; Gonçalves, Pedro; Fernandes, Ricardo J.; Keskinen, Kari L.; Vilas-Boas, João PauloThe purpose of this study was to analyse the relationships between the total energy expenditure ( tot), the energy cost (EC), the intra-cycle variation of the horizontal velocity of displacement of centre of mass (dv) and the mean swimming velocity (v) in the four competitive swimming strokes.
- Relationships between energy cost, swimming velocity and speed fluctuation in competitive swimming strokesPublication . Barbosa, Tiago M.; Lima, Francisco; Portela, Ana; Novais, Daniel; Machado, Leandro; Colaço, Paulo; Gonçalves, Pedro; Fernandes, Ricardo J.; Vilas-Boas, João PauloThe purpose of the study was to analyse relationships between total energy expenditure (Etot), energy cost (EC), intra-cycle variation of the horizontal velocity of displacement of centre of mass (dv) and mean swimming velocity (v). 17 Portuguese elite swimmers (4 at Freestyle, 5 at Backstroke, 4 at Breaststroke and 4 at Butterfly) were submitted to an incremental set of nx200-m swims. Bioenergetical and biomechanical parameters presented significant interrelationships. For pooled data, the relationship between Etot and v was r=0.59 (p<0.01), between EC and dv was r=0.38 (p<0.01) and the polynomial relationship, between dv and v was r=0.17 (p=0.28). Individual evaluation and identification of biomechanical critical points may help the swimmers to become more efficient at a certain swimming velocity.
- Relationships between energy cost, swimming velocity and speed fluctuation in elite butterfliersPublication . Barbosa, Tiago M.; Lima, Francisco; Portela, Ana; Novais, Daniel; Lima, António B.; Colaço, Paulo; Fernandes, Ricardo J.; Keskinen, Kari L.; Vilas-Boas, João Paulo