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Hydrodynamic profile of young swimmers: changes over a competitive season
Barbosa, Tiago M.; Morais, J.E.; Marques, M.C.; Silva, A.J.; Marinho, D.A.; Kee, Y.H.The aim of this study was to analyze the changes in the hydrodynamic profile of young swimmers over a competitive season and to compare the variations according to a well-designed training periodization. Twenty-five swimmers (13 boys and 12 girls) were evaluated in (a) October (M1); (b) March (M2); and (c) June (M3). Inertial and anthropometrical measures included body mass, swimmer’s added water mass, height, an...
Avaliação in silico e em cultivos contínuos do metabolismo de S. typhimurium
Sargo, C. R.; Zangirolami, T. C.; Giordano, R. C.; Ferreira, E. C.; Rocha, I.; Silva, A. J.Linhagens atenuadas de Salmonella têm sido investigadas para o desenvolvimento de diversos produtos biotecnológicos, como vacinas recombinantes. No entanto, protocolos para obtenção de altas densidades celulares de Salmonella spp., necessárias para viabilizar o processo de produção destes produtos, ainda não foram estabelecidos, sendo necessário para isso contornar a elevada formação de produtos tóxicos de seu ...
The influence of ACE ID and ACTN3 R577X polymorphisms on lower-extremity functi...
Pereira, Ana; Costa, Aldo M.; Monteiro, A.M.; Izquierdo, Mikel; Silva, A.J.; Bastos, Estela; Marques, M.C.Background We studied the influence of the ACE I/D and ACTN3 R577X polymorphisms (single or combined) on lower-extremity function in older women in response to high-speed power training. Methods One hundred and thirty-nine healthy older Caucasian women participated in this study (age: 65.5 ± 8.2 years, body mass: 67.0 ± 10.0 kg and height: 1.57 ± 0.06 m). Walking speed (S10) performance and functional capac...
Muscle tissue changes with aging
Pereira, Ana de Fátima; Silva, A.J.; Costa, Aldo Matos; Monteiro, António Miguel; Bastos, Estela Maria; Marques, M.C.Sarcopenia is characterized by a progressive generalized decrease of skeletal muscle mass, strength and function with aging. Recent- ly, the genetic determination has been associated with muscle mass and muscle strength in elderly. These two phenotypes of risk are the most commonly recognized and studied for sarcopenia, with heritability ranging from 30 to 85% for muscle strength and 45-90% for muscle mass. I...
Is the underwater gliding test a valid procedure to estimate the swimmers’ drag?
Morais, J.E.; Costa, M.J.; Jesus, S.; Mejias, J.E.; Moreira, M.; Garrido, N.; Silva, A.J.; Marinho, D.A.; Barbosa, Tiago M.The aim of this study was to develop a structural equation model for underwater gliding distance based on its determinant variables, in order to confirm whether it is an informative test of young swimmers’ hydrodynamic profile. Methods: Twenty-three subjects (twelve boys and eleven girls with a mean age of 13.61 ± 0.83 years old) were evaluated. The following were determined: (i) the underwater gliding distance...
Characterization of speed fluctuation and drag force in young swimmers: a gende...
Barbosa, Tiago M.; Costa, M.J.; Morais, J.E.; Morouço, P.; Moreira, M.; Garrido, N.; Marinho, D.A.; Silva, A.J.The aim of this study was to compare the speed fluctuation and the drag force in young swimmers between genders. Twenty-three young pubertal swimmers (12 boys and 11 girls) volunteered as subjects. Speed fluctuation was measured using a kinematical mechanical method (i.e., speedo-meter) during a maximal 25-m front crawl bout. Active drag, active drag coefficient and power needed to overcome drag were measured w...
A swimmer`s classsification system based in kinematics, anthropometrics and hy...
Barbosa, Tiago M.; Morais, Jorge; Gonçalves, José; Marinho, D.A.; Silva, A.J.The aim of this paper was to identify active drag determinants and classify swimmers based on such features. 67 young swimmers made a maximal 25m Front-Crawl to measure with a speedo-meter the swimming velocity (v), speed-fluctuation (dv) and dv normalized to v (dv/v). Another two 25m bouts with and without a perturbation device were made to estimate active drag coefficient (CDa). Trunk transverse surface area ...
The influence of anthropometric, kinematic and energetic variables and gender o...
Morais, Jorge E.; Garrido, N.; Marques, M.C.; Silva, A.J.; Marinho, D.A.; Barbosa, Tiago M.The aim of this study was to assess the: (i) gender; (ii) performance and; (iii) gender versus performance interactions in young swimmers’ anthropometric, kinematic and energetic variables. One hundred and thirty six young swimmers (62 boys: 12.76 ± 0.72 years old at Tanner stages 1-2 by self-evaluation; and 64 girls: 11.89 ± 0.93 years old at Tanner stages 1-2 by self-evaluation) were evaluated. Performance, a...
Longitudinal study in male swimmers: a hierachical modeling of energetics and b...
Costa, Mário; Bragada, José A.; Marinho, D.A.; Lopes, Vítor P.; Silva, A.J.; Barbosa, Tiago M.The aim of this study was to assess the pooled and individual response of male swimmers over two consecutive years of training and identify the energetic and biomechanical factors that most contributed for the final performance. Nine competitive swimmers (20.0 +/- 3.54 years old; 10.1 +/- 3.41 years of training experience; 1.79 +/- 0.07 m of height; 71.34 +/- 8.78 kg of body mass; 22.35 +/- 2.02 kg.m(-2) of bod...
Psychometric properties of a Portuguese version of the Subjective Happiness Scale
Spagnoli, P.; Caetano, António; Silva, A. J.WOS:000297707500008 (Nº de Acesso Web of Science) ; “Prémio Científico ISCTE-IUL 2013” ; The Subjective Happiness Scale (SHS) constitutes an instrument for assessing subjective happiness. This study aims to present the validation of the SHS in a Portuguese adult population. A large representative sample (1,017 participants), from five different age groups was considered. Configurational invariance of the unid...
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