2981386 documents found, page 110150 of 298139
Caracterização cinemática do movimento básico de hidroginástica "polichinelo" a...
Costa, M.J.; Oliveira, C.; Teixeira, Genoveva; Marinho, D.A.; Silva, A.J.; Barbosa, Tiago M.O estudo teve como objectivo analisar as relações entre a cadência musical e as características cinemáticas de um movimento básico de Hidroginástica. Cinco mulheres jovens com pelo menos um ano de experiência na condução de aulas de Hidroginástica foram filmadas no plano sagital por um par de câmaras, permitindo uma projecção dupla e simultânea de imagens (superfície e subaquática). As mesmas foram obtidas dura...
Análise longitudinal das modificações no perfil biomecânico de nadadores de eli...
Costa, M.J.; Bragada, José A.; Mejias, J. Erik; Marinho, D.A.; Louro, Hugo; Silva, José; Barbosa, Tiago M.O estudo teve como objectivo analisar as modificações nos pressupostos biomecânicos de nadadores de elite e o seu impacto na performance ao longo de uma época desportiva. Foram analisados 10 nadadores portugueses masculinos (4 de nível internacional 6 de nível nacional) em três momentos distintos correspondentes a Dezembro (M1), Março (M2) e Julho (M3) da época desportiva de 2009-2010. Os parâmetros biomecânico...
Modeling the links between young swimmers’ performance: energetic and biomechan...
Barbosa, Tiago M.; Costa, M.J.; Marinho, D.A.; Coelho, Joel; Moreira, Marc; Silva, A.J.The aim was to develop a path-flow analysis model for young swimmers’ performance based on biomechanical and energetic parameters, using structural equation modeling. Thirty-eight male young swimmers served as subjects. Performance was assessed by the 200-m freestyle event. For biomechanical assessment the stroke length, the stroke frequency and the swimming velocity were analyzed. Energetics assessment include...
Tracking the performance of world-ranked swimmers
Costa, M.J.; Marinho, D.A.; Reis, Victor M.; Silva, A.J.; Marques, Mário C.; Bragada, José A.; Barbosa, Tiago M.Tracking the swimming performance is important to analyze its progression and stability between competitions and help coaches to define realistic goals and to select appropriate training methods. The aim of this study was to track world-ranked male swimmer’s performance during five consecutive seasons (from 2003/2004 to 2007/2008) in Olympic freestyle events. An overall of 477 swimmers and 2385 season best perf...
Physical exercise and reduction of pain in adults with lower limb osteoarthriti...
Escalante, Yolanda; Saavedra, Jose M.; García-Hermoso, A.; Silva, A.J.; Barbosa, Tiago M.Osteoarthritis is a degenerative joint disease. The knee and hip joints are the most frequently affected. Treatments fall into three main categories: pharmacological, nonpharmacological, and surgical. Treatments can be applied alone or in combination. In the last few years, within the nonpharmacological category have been a growing importance of physical exercise programs aimed to reduce pain in knee and hip jo...
Effects of musical cadence in the acute physiologic adaptations to head-out aqu...
Barbosa, Tiago M.; Sousa, Vítor F.; Silva, A.J.; Reis, Victor M.; Marinho, D.A.; Bragada, José A.The purpose of this study was to analyze the relationships between musical cadence and the physiologic adaptations to basic head-out aquatic exercises. Fifteen young and clinically healthy women performed, immersed to the breast, a cardiovascular aquatic exercise called the ‘‘rocking horse.’’ The study design included an intermittent and progressive protocol starting at a 90 b min21 rhythm and increasing every ...
Swimming propulsion forces are enhanced by a small finger spread
Marinho, D.A.; Barbosa, Tiago M.; Reis, Victor M.; Kjendlie, Per L.; Alves, Francisco B.; Vilas-Boas, João Paulo; Machado, Leandro; Silva, A.J.The main aim of this study was to investigate the effect of finger spread on the propulsive force production in swimming using computational fluid dynamics. Computer tomography scans of an Olympic swimmer hand were conducted. This procedure involved three models of the hand with differing finger spreads: fingers closed together (no spread), fingers with a small (0.32 cm) spread, and fingers with large (0.64 cm)...
Energetics and biomechanics as determining factors of swimming performance: upd...
Barbosa, Tiago M.; Bragada, José A.; Reis, Victor M.; Marinho, D.A.; Carvalho, Carlos Manuel Pereira; Silva, A.J.The biophysical determinants related to swimming performance are one of the most attractive topics within swimming science. The aim of this paper was to do an update of the “state of art” about the interplay between performance, energetic and biomechanics in competitive swimming. Throughout the manuscript some recent highlights are described: (i) the relationship between swimmer’s segmental kinematics (segmenta...
Kinematical changes in swimming front crawl and breaststroke with the AquaTrain...
Barbosa, Tiago M.; Silva, A.J.; Reis, António; Costa, M.J.; Garrido, Nuno D.; Policarpo, Fernando; Reis, Victor M.The aim of the present study was to assess the kinematical changes when swimming maximal bouts in Front Crawl and Breaststroke with the AquaTrainer® snorkel. Thirteen male swimmers (7 at Breaststroke and 6 at Front Crawl) of national level performed randomly two maximal bouts of 100-m swims: one bout using the Aqua- Trainer® snorkel (snorkel swim) and another one without the snorkel (free swim). The swims were ...
Can 8-weeks of training affect active drag in young swimmers?
Marinho, D.A.; Barbosa, Tiago M.; Costa, M.J.; Figueiredo, Catarina; Reis, Victor M.; Silva, A.J.; Marques, Mário C.The aim of this study was to assess the effects of 8-weeks of training on active drag in young swimmers of both genders. Eight girls and twelve boys’ belonging to the same swimming team and with regular competitive participation in national and regional events for the previous two seasons participated in this study. Active drag measurements were conducted in two different evaluation moments: at the beginning of...