A5086458777- Sports Performance and Training
- Cardiovascular and exercise physiology
- Exercise and Physiological Responses
- Sports injuries and prevention
- Cardiovascular Effects of Exercise
- Muscle metabolism and nutrition
- Sports Dynamics and Biomechanics
- High Altitude and Hypoxia
- Biomimetic flight and propulsion mechanisms
- Genetics and Physical Performance
- Cardiovascular and Diving-Related Complications
- Hemodynamic Monitoring and Therapy
- Thermoregulation and physiological responses
- Physical Education and Pedagogy
- Muscle activation and electromyography studies
- Medical Imaging Techniques and Applications
- Physical Education and Sports Studies
- Sports and Physical Education Studies
- Children's Physical and Motor Development
- Maritime and Coastal Archaeology
- Shoulder Injury and Treatment
- Radiopharmaceutical Chemistry and Applications
- Winter Sports Injuries and Performance
- Robotic Locomotion and Control
- Fluid Dynamics and Turbulent Flows
University of Lisbon
2014-2023
Humana (United States)
2017
National Institute of Health Dr. Ricardo Jorge
2011-2016
Universidade Europeia
2016
Universidade Federal do Rio Grande do Sul
2015
Instituto Politecnico de Setubal
2014
Sport Lisboa e Benfica
2012
Universidade do Porto
2009-2011
Association for the Development of Douro Viticulture
2011
University of Trás-os-Montes and Alto Douro
2007-2011
This study used a computational fluid dynamics methodology to analyze the effect of body position on drag coefficient during submerged gliding in swimming. The k-epsilon turbulent model implemented commercial code Fluent and applied flow around three-dimensional male adult swimmer was used. Two common positions were investigated: ventral with arms extended at front, placed along side trunk. simulations velocities between 1.6 2.0 m·s −1 , which are typical elite swimmers when underwater start...
To analyze young swimmers' performance regarding sex and skill level, 23 boys 26 girls (15.7 ± 0.8 14.5 years old, respectively) were assessed for anthropometry, flexibility, strength, drag, coordination, biomechanical variables. During a 50-m maximal front-crawl bout, seven aerial six underwater Qualisys cameras kinematics, load cell was used to measure drag (Tedea, United Kingdom) tethered swimming force. A multivariate analysis of variance test (p < .05) enabled us observe differences...
The main aim of this study was to investigate the effect finger spread on propulsive force production in swimming using computational fluid dynamics. Computer tomography scans an Olympic swimmer hand were conducted. This procedure involved three models with differing spreads: fingers closed together (no spread), a small (0.32 cm) spread, and large (0.64 spread. Steady-state dynamics analyses performed Fluent code. measured forces decomposed into drag lift coefficients. For models, angles...
Blood flow restrictive (BFR) exercise elicits a localized hypoxic environment compatible with greater metabolic stress. We intended to compare the acute changes in muscle microvascular oxygenation following low-intensity knee extension exercise, combined different levels of BFR. Thirteen active young men (age: 23.8 ± 5.4 years) were tested for unilateral (30+15+15+15 reps at 20% one repetition maximum) on 4 conditions: no-BFR (NOBFR), 40, 60 and 80% arterial occlusion pressure (AOP)....
The purpose of this study was to analyze the hydrodynamic characteristics a realistic model an elite swimmer hand/forearm using three-dimensional computational fluid dynamics techniques. A domain designed simulate flow around hand and forearm in different orientations (0°, 45°, 90° for three axes Ox, Oy Oz). obtained through computerized tomography scans. Steady-state analyses were performed commercial code Fluent. drag coefficient presented higher values than lift all orientations....
The present study aimed to examine how high- and low-speed swimmers organise biomechanical, energetic coordinative factors throughout extreme intensity swim. Sixteen (eight eight low-speed) performed, in free condition, 100-m front crawl at maximal 25, 50 75-m bouts (at same pace as the previous 100-m), on measuring active drag system (MAD-system). A 3D dual-media optoelectronic was used assess speed, stroke frequency, length, propelling efficiency index of coordination (IdC), with power...
Leucine metabolites, α-hydroxyisocaproic acid (α-HICA) and β-hydroxy-β-methylbutyrate (calcium, HMB-Ca free acid, HMB-FA), have been proposed to augment resistance training-induced changes in body composition performance.We aimed conduct a double-blind randomized controlled pragmatic trial evaluate the effects of off-the-shelf leucine metabolite supplements α-HICA, HMB-FA, on muscle thickness performance.Forty men were randomly assigned receive α-HICA (n = 10, fat-free mass [FFM] 62.0 ± 7.1...
This study analyzed whether 100- and 200-m interval training (IT) in swimming differed regarding temporal, perceptual, physiological responses. The IT was performed at maximal aerobic velocity (MAV) until exhaustion time spent near to maximalVO 2 peak oxygen uptake (⩒O peak), total limit (t Lim ), blood lactate [La − ] peak, ⩒O kinetics K), rate of perceived exertion (RPE) were compared between protocols. Twelve swimmers (seven males 16.1 ± 1.1 five females 14.2 1 years) completed a...
To conduct a biophysical analysis of the factors associated with front-crawl performance at moderate and severe swimming intensities, represented by anaerobic-threshold (vAnT) maximal-oxygen-uptake (vV̇O2max) velocities.Ten high-level swimmers performed 2 intermittent incremental tests 7 × 200 12 25 m (through system underwater push-off pads) to assess vAnT, vV̇O2max, power output. The 1st protocol was videotaped (3D reconstruction) for kinematic stroke frequency (SF), length (SL),...
Purpose: to compare different methods assess the arm stroke efficiency ( η F ), when swimming front crawl using arms only on Measurement of Active Drag System (MAD System) and in a free-swimming condition, identify biophysical adaptations MAD main predictors maximal speed 200 m v ). Methods: fourteen swimmers performed twice 5 × incremental trial only, once freely, System. The total metabolic power was assessed both conditions. biomechanical parameters were obtained from video analysis force...
The aim of the study was to compare maximal physiological responses during three protocols: test on land cycle ergometer, water cycling in an indoor pool at 27 °C (WC27) and 31 (WC31). Moreover, submaximal were compared according cadences temperatures protocols. Ten young men included performed protocols separate days. Blood lactate (BL) concentration, heart rate (HR), oxygen uptake (VO2), ventilation (VE) thermal comfort (TC) collected exercise. HR VO2 showed no significant differences...
Our purpose was to verify if the use of new AquaTrainer(®) respiratory snorkel lead an increase front crawl hydrodynamic drag and whether constraint using adapted turning technique influences its corresponding time. 12 swimmers performed 2 (without with snorkel) 12×25 repetitions from low maximal velocity on measuring active system. Complementarily, 3 swimming turns were compared: open turn snorkel, tumble without snorkel. Drag values similar vs. at 0.9, 1.1, 1.3, 1.5 1.7 m.s(-1) velocities:...
The purpose of this study was to describe the VO<sub>2</sub> kinetics above and below respiratory compensation point (RCP) during swimming. After determination gas-exchange threshold (GET), RCP VO<sub>2max</sub>, 9 well-trained swimmers (21.0±7.1 year, VO<sub>2max</sub>=57.9±5.1 ml.kg<sup> − 1</sup>.min<sup> 1</sup>), completed a series “square-wave” swimming transitions speed corresponding 2.5% (S<sub> 2.5%</sub>) (S<sub>+2.5%</sub>) observed at for pulmonary kinetics. trial (~2.7%) (~2%)...