Inês G. Mollet, Nuno L. Barbosa‐Morais, Jorge Andrade, Maria Carmo‐Fonseca,
U2 snRNP auxiliary factor (U2AF) is an essential heterodimeric splicing factor composed of two subunits, U2AF 65 and U2AF 35 . During the past few years, a number of proteins related to both U2AF 65 and U2AF 35 have been discovered. Here, we review the conserved structural features that characterize the U2AF protein families and their evolutionary emergence. We perform a comprehensive database search designed to identify U2AF protein isoforms produced by alternative splicing, and we discuss the potential ...
Tópico(s): RNA modifications and cancer
2006 - Wiley | FEBS Journal
Tiago M. Barbosa, Jorge E. Morais, Mário C. Marques, António Silva, Daniel A. Marinho, Ying Hwa Kee,
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) O ctober ( M 1); (b) M arch ( M 2); and (c) J une ( M 3). Inertial and anthropometrical measures included body mass, swimmer's added water mass, height, and trunk transverse surface area. Swimming efficiency was estimated by the speed fluctuation, ...
Tópico(s): Heart Rate Variability and Autonomic Control
2014 - Wiley | Scandinavian Journal of Medicine and Science in Sports
Tiago M. Barbosa, Jorge E. Morais, Mário C. Marques, Mário J. Costa, Daniel A. Marinho,
The aim of this article was to compare swimming power output between boys and girls and to model the relationship between swimming power output and sprinting performance in young swimmers.One hundred young swimmers (49 boys and 51 girls, aged between 11 and 13 years) underwent a test battery including anthropometrics (body mass, height, arm span [AS], and trunk transverse surface area), kinematic and efficiency (velocity, stroke frequency, stroke length, speed fluctuation, normalized speed fluctuation, ...
Tópico(s): Sports Dynamics and Biomechanics
2014 - Lippincott Williams & Wilkins | The Journal of Strength and Conditioning Research
Tiago M. Barbosa, Jorge E. Morais, Pedro Forte, Henrique P. Neiva, Nuno Domingos Garrido, Daniel A. Marinho,
The aim of this study was to compare the swimming hydrodynamics assessed with experimental and analytical procedures, as well as, to learn about the relative contributions of the friction drag and pressure drag to total passive drag. Sixty young talented swimmers (30 boys and 30 girls with 13.59±0.77 and 12.61±0.07 years-old, respectively) were assessed. Passive drag was assessed with inverse dynamics of the gliding decay speed. The theoretical modeling included a set of analytical procedures based ...
Tópico(s): Sports Analytics and Performance
2015 - Public Library of Science | PLoS ONE
António M. Monteiro, Pedro Forte, Joana Carvalho, Tiago M. Barbosa, Jorge E. Morais,
The aim of this study was to develop a confirmatory model, using structural equation modeling, to describe and explain the fear of falling in elderly women. Forty-one participants (67.69 ± 5.30 years) were selected to test a theoretical model. The final model revealed that the fear of falling is related to impaired balance (dynamic and static). Strength has a positive effect on both dynamic and static balance. Strength depends on bone mineral density. In conclusion, more strength and bone mineral density ...
Tópico(s): Effects of Vibration on Health
2019 - Taylor & Francis | Journal of Women & Aging
Produção Nacional
Revisado por pares
Nelson Bernardi Lima, Marcus Vinícius de Aragão Batista, Marcos Antônio de Morais, M. A. G. Barbosa, Sami Jorge Michereff, Kevin D. Hyde, Marcos Paz Saraiva Câmara,
Tópico(s): Yeasts and Rust Fungi Studies
2013 - Springer Science+Business Media | Fungal Diversity
Produção Nacional
Revisado por pares
Harold Alexander Vargas Hoyos, Josiane Barros Chiaramonte, Ana Gabriele Barbosa-Casteliani, Jorge Fernandez Morais, Juan E. Pérez‐Jaramillo, Suikinai Nobre Santos, S. C. do N. de Queiroz, I. S. de Melo,
The huge biological diversity of the Brazilian Cerrado is an important source of economically interesting microbial agents. The phylum Actinobacteria plays an important role in nutrient cycling, potentially improving their availability to plants. In this study, we isolated an actinobacteria (strain 3AS4) from wheat rhizospheres of crops cultivated in the Cerrado biome. Strain 3AS4 was identified as belonging to the genus Streptomyces and had phosphorus mobilization ability, mineralizing approximately ...
Tópico(s): Legume Nitrogen Fixing Symbiosis
2021 - Frontiers Media | Frontiers in Bioengineering and Biotechnology
Jorge E. Morais, Tiago M. Barbosa, Henrique P. Neiva, Daniel A. Marinho,
This study aimed to assess the stability of the performance, pace and turn parameters of elite long-distance male swimmers during an 800 m freestyle race. The sample was composed by 38 male swimmers, participating in the 800 m event at the 2016 LEN European Aquatic Championships (long course meter). The performance, and a set of pace and turn parameters were analyzed. A customized software was used to perform each race analysis. Swimmers spent 64.05 ± 0.50% and 35.95 ± 0.49% of the final race time in ...
Tópico(s): Muscle activation and electromyography studies
2018 - Elsevier BV | Human Movement Science
Jorge E. Morais, Tiago M. Barbosa, Pedro Forte, António Silva, Daniel A. Marinho,
Introduction: In youth swimming, researchers are interested in understanding how anthropometry and parameters related to swimming technique (biomechanics, energetics, and efficiency) influence the performance. However, there is not any review in the literature that consolidates the body of knowledge of this topic. The objective of this study was to review systematically the current body of work on the influence of determinant factors related to swimming technique (biomechanics, energetics, and efficiency) ...
Tópico(s): Sports injuries and prevention
2021 - Frontiers Media | Frontiers in Physiology
Jorge E. Morais, Tiago M. Barbosa, António Silva, Santiago Veiga, Daniel A. Marinho,
The aim of this study was to (1) analyze and compare the race performance and stability between the fastest and slowest male swimmers during the 50 m freestyle event, and (2) to understand the speed-time relationship in this race. The performances (start, clean swim, and finish) of 86 swimmers (divided into two tiers: best and poorest performances) who competed in the 50 m freestyle event in the 2019 long course LEN European Junior Championships were analyzed. The swimming speed presented a significant ...
Tópico(s): Sport Psychology and Performance
2021 - Wiley | Scandinavian Journal of Medicine and Science in Sports
Produção Nacional
Revisado por pares
Jorge E. Morais, Tiago M. Barbosa, Pedro Forte, José A. Bragada, Flávio Antônio de Souza Castro, Daniel A. Marinho,
This study aimed to analyse the stability of elite male long-distance swimmers (1500 m), and to identify the main predictors related to the pace. The performance of 16 elite male swimmers (22.59 ± 2.10 years-old) participating in the 1500 m event at the 2016 (London) and 2018 (Glasgow) LEN European Aquatic Championships were analysed. The lap performance, clean swim performance, turn performance, and a set of stroke mechanics variables were assessed. The lap performance presented a significant and moderate ...
Tópico(s): Sport Psychology and Performance
2020 - Taylor & Francis | Sports Biomechanics
Pedro Forte, Daniel A. Marinho, Pantelis Τ. Nikolaidis, Beat Knechtle, Tiago M. Barbosa, Jorge E. Morais,
Resistance acting on a cyclist is a major concern among the cycling fraternity. Most of the testing methods require previous training or expensive equipment and time-consuming set-ups. By contrast, analytical procedures are more affordable and numerical simulations are perfect for manipulating and controlling inputs. The aim of this case study was to compare the drag of a cyclist in the aero position as measured using numerical simulation and analytical procedures.An elite male cyclist (65 kg in ...
Tópico(s): Winter Sports Injuries and Performance
2020 - Multidisciplinary Digital Publishing Institute | International Journal of Environmental Research and Public Health
Jorge G. Barbosa, Carla Morais, Rui Nóbrega, Alexandrina Monteiro,
This paper addresses the problem of scheduling parallel tasks, represented by a direct acyclic graph (DAG) on heterogeneous clusters. Parallel tasks, also called malleable tasks, are tasks that can be executed on any number of processors with its execution time being a function of the number of processors allotted to it. The scheduling of independent parallel tasks on homogeneous machines has been extensively studied and the case of parallel tasks with precedence constraints has been studied for ...
Tópico(s): Interconnection Networks and Systems
2005 - Institute of Electrical and Electronics Engineers | Proceedings
Tiago M. Barbosa, Jorge E. Morais, Mário J. Costa, José Gonçalves, Daniel A. Marinho, António Silva,
The aim of this article has been to classify swimmers based on kinematics, hydrodynamics, and anthropometrics. Sixty-seven young swimmers made a maximal 25 m front-crawl to measure with a speedometer the swimming velocity ( v ), speed-fluctuation ( dv ) and dv normalized to v ( dv / v ). Another two 25 m bouts with and without carrying a perturbation device were made to estimate active drag coefficient ( C D a ). Trunk transverse surface area ( S ) was measured with photogrammetric technique on land and in the hydrodynamic ...
Tópico(s): Sports injuries and prevention
2014 - International Society of Biomechanics | Journal of Applied Biomechanics
Jorge E. Morais, Tiago M. Barbosa, Vítor P. Lopes, Mário C. Marques, Daniel A. Marinho,
The aims of this study were to: (1) verify the sex effect; (2) assess upper limb asymmetry in anthropometrics and propulsive force variables; and (3) identify the main determinants of butterfly swim velocity based on a set of anthropometrics, kinematics, and propulsive force variables. Twenty swimmers (10 males: 15.40±0.30 years; 10 females: 14.43±0.23 years) at the national level were recruited for analysis. A set of anthropometrics, kinematics, and propulsive force variables were measured. Overall, ...
Tópico(s): Sport Psychology and Performance
2021 - Thieme Medical Publishers (Germany) | International Journal of Sports Medicine
Jorge E. Morais, Tiago M. Barbosa, Alan Nevill, Stephen Cobley, Daniel A. Marinho,
Introduction: This study aimed to: 1) determine swimming velocity based on a set of anthropometric, kinematic, and kinetic variables, and; 2) understand the stroke frequency (SF)–stroke length (SL) combinations associated with swimming velocity and propulsion in young sprint swimmers. Methods: 38 swimmers (22 males: 15.92 ± 0.75 years; 16 females: 14.99 ± 1.06 years) participated and underwent anthropometric, kinematic, and kinetic variables assessment. Exploratory associations between SL and SF on swimming ...
Tópico(s): Sports injuries and prevention
2022 - Frontiers Media | Frontiers in Physiology
Produção Nacional
Revisado por pares
Elívia Camurça Cidade, James Ferreira Moura, Bárbara Barbosa Nepomuceno, Verônica Morais Ximenes, Jorge Castellá Sarriera,
The aim of this study was to analyze the consequences of poverty on expressions of fatalism, hope, and sense of community of two Brazilian States: Ceará and Rio Grande do Sul. Seven-hundred and thirty-one people, divided in four groups (extreme poverty, poverty, median income, and adequate income) answered a questionnaire. The variables sense of community and hope were found to be predictors of fatalism. Individuals in situations of poverty and extreme poverty showed high indices of fatalism, pessimism, ...
Tópico(s): Psychological Well-being and Life Satisfaction
2015 - Taylor & Francis | Journal of Prevention & Intervention in the Community
Raúl F. Bartolomeu, Tiago M. Barbosa, Jorge E. Morais, Vítor P. Lopes, José A. Bragada, Mário J. Costa,
The purpose of this study was to: (1) establish the relationship between acute physiological responses and musical cadence; and (2) compare physiologic responses between young and older women. Eighteen older (mean = 65.06 ± 5.77 years) and 19 young (mean = 22.16 ± 2.63 years) women underwent an intermittent and progressive protocol performing the head-out aquatic exercise the “rocking horse.” Results showed that older women demonstrated lower mean heart rate, blood lactate concentration (bLa), and oxygen uptake ( ...
Tópico(s): Children's Physical and Motor Development
2016 - Routledge | Women & Health
Produção Nacional
Revisado por pares
Marília Wortmann Marques, Nelson Bernardi Lima, Marcos Antônio de Morais, M. A. G. Barbosa, Breno Oliveira de Souza, Sami Jorge Michereff, Alan J. L. Phillips, Marcos Paz Saraiva Câmara,
Tópico(s): Plant-Microbe Interactions and Immunity
2013 - Springer Science+Business Media | Fungal Diversity
Tiago M. Barbosa, Mário J. Costa, Jorge E. Morais, Pedro Morouço, Marc Moreira, Nuno Domingos Garrido, Daniel A. Marinho, António Silva,
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 with the velocity perturbation method for another two maximal 25m front crawl bouts with ...
Tópico(s): Sports Dynamics and Biomechanics
2013 - Elsevier BV | Human Movement Science
Tiago M. Barbosa, Wan Xiu Goh, Jorge E. Morais, Mário J. Costa, David Pendergast,
The aim of this study was to compare the non-linear properties of the four competitive swim strokes. Sixty-eight swimmers performed a set of maximal 4 × 25 m using the four competitive swim strokes. The hip's speed-data as a function of time was collected with a speedo-meter. The speed fluctuation (dv), approximate entropy (ApEn) and the fractal dimension by Higuchi's method (D) were computed. Swimming data exhibited non-linear properties that were different among the four strokes (14.048 ≤ dv ≤ 39.722; 0. ...
Tópico(s): Fractal and DNA sequence analysis
2016 - Frontiers Media | Frontiers in Psychology
Tiago M. Barbosa, Wan Xiu Goh, Jorge E. Morais, Mário J. Costa,
The aim was to examine the variation of linear and nonlinear proprieties of the behavior in participants with different levels of swimming expertise among the four swim strokes. Seventy-five swimmers were split into three groups (highly qualified experts, experts and nonexperts) and performed a maximal 25m trial for each of the four competitive swim strokes. A speed-meter cable was attached to the swimmer's hip to measure hip speed; from which speed fluctuation (dv), approximate entropy (ApEn) and ...
Tópico(s): Sports Analytics and Performance
2016 - Human Kinetics | Motor Control
Tiago M. Barbosa, Raúl F. Bartolomeu, Jorge E. Morais, Mário J. Costa,
The aim was to compare the anthropometrics, biomechanics and energetics in young swimmers of different competitive levels. Seventy-five boys aged between 11 and 13 years-old with a broad range of performances were ranked based on their personal best time in the men's 100m freestyle event and then split-up into three tiers (Tier-1, i.e., top-tier, best performers; Tier-2, mid-tier; Tier-3, lower-tier). A set of anthropometric features was measured (height, body mass, arm span and trunk transverse surface ...
Tópico(s): Sport Psychology and Performance
2019 - Frontiers Media | Frontiers in Physiology
Pedro Forte, Pedro Henrique de Barros Carvalho Pinto, Tiago M. Barbosa, Jorge E. Morais, António M. Monteiro,
The aim of this study was to assess elderly’s functional fitness and body composition effects between pre and post multicomponent training program with six months of intervention. The sample of this study was composed with 34 volunteered elderlies with 68 (± 7.55) years old. The body composition was evaluated with a Tanita BC-545 and functional fitness test assessed elderly’s functional fitness. The body composition did not presented significant changes between the pre and post exercise program intervention. ...
Tópico(s): Body Composition Measurement Techniques
2021 - Desafio Singular | Motricidade
Pedro Forte, Daniel A. Marinho, Jorge E. Morais, Pedro Morouço, Tiago M. Barbosa,
Biomechanics plays an important role helping Paralympic sprinters to excel, having the aerodynamic drag a significant impact on the athlete's performance. The aim of this study was to assess the aerodynamics in different key-moments of the stroke cycle by Computational Fluid Dynamics. A world-ranked wheelchair sprinter was scanned on the racing wheelchair wearing his competition gear and helmet. The sprinter was scanned in three different positions: (i) catch (hands in the 12h position on the hand- ...
Tópico(s): Aerodynamics and Fluid Dynamics Research
2018 - Public Library of Science | PLoS ONE
Pedro Forte, Daniel A. Marinho, Jorge E. Morais, Pedro Morouço, Tiago M. Barbosa,
The aim was to compare the mechanical power and energy cost of an elite wheelchair sprinter in the key-moments of the stroke cycle. The wheelchair-athlete system was 3D scanned and then computational fluid dynamics was used to estimate the drag force. Mechanical power and energy cost were derived from a set of formulae. The effective area in the catch, release and recovery phases were 0.41 m2, 0.33 m2 and 0.24 m2, respectively. Drag increased with speed and varied across the key-moments. The catch ...
Tópico(s): Sports Performance and Training
2018 - Taylor & Francis | Computer Methods in Biomechanics & Biomedical Engineering
Jorge E. Morais, Tiago M. Barbosa, Tiago Lopes, David Simbaña Escobar, Daniel A. Marinho,
The aim of this study was to: (i) characterise the stroke kinematics' stability of the male swimmers competing in the four 50 m events at the 2021 European Championships, and; (ii) understand the speed-time relationship in the four race events.All male swimmers who participated in the 50 m events (backstroke: 78 swimmers; breaststroke: 79 swimmers; butterfly: 89 swimmers; freestyle: 95 swimmers) were evaluated.In each swimming stroke swimmers were split in two groups (better and poorer performances). ...
Tópico(s): Sports injuries and prevention
2022 - Taylor & Francis | Sports Biomechanics
Tiago M. Barbosa, Jorge E. Morais, Pedro Forte, Henrique P. Neiva, Nuno Domingos Garrido, Daniel A. Marinho,
[This corrects the article DOI: 10.1371/journal.pone.0130868.].
Tópico(s): Sports Dynamics and Biomechanics
2017 - Public Library of Science | PLoS ONE
Pedro Forte, Daniel A. Marinho, Ricardo Silveira, Tiago M. Barbosa, Jorge E. Morais,
Background and Objectives: The aim of this study was to assess and compare the drag and energy cost of three cyclists assessed by computational fluid dynamics (CFD) and analytical procedures. Materials and methods: A transradial (Tr) and transtibial (Tt) were compared to a full-body cyclist at different speeds. An elite male cyclist with 65 kg of mass and 1.72 m of height volunteered for this research with his competition cloths, helmet and bicycle with 5 kg of mass. A 3D model of the bicycle and cyclist ...
Tópico(s): Vehicle emissions and performance
2020 - Multidisciplinary Digital Publishing Institute | Medicina
Produção Nacional
Revisado por pares
Kátia Maria Morais Eiras, Jorge Luiz Colodette, Vanessa Lopes Silva, Luiz C. A. Barbosa,
Tópico(s): Wood Treatment and Properties
2008 - De Gruyter | Nordic Pulp & Paper Research Journal