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Articles 2611 - 2640 of 3176

Full-Text Articles in Exercise Physiology

Interpreting Data Of A Repeated Sprint Test, Rafael Alkmin Reis, Denise Vaz De Macedo, René Brenzikofer Mar 2012

Interpreting Data Of A Repeated Sprint Test, Rafael Alkmin Reis, Denise Vaz De Macedo, René Brenzikofer

International Journal of Exercise Science: Conference Proceedings

Alterations in performance are often quantified through physical tests. However, although frequently used there are a few discussions about the reliability and interpretation of their results. The purpose of this study was to verify the reliability of a new method to access the repeated sprint ability denominated Labex-Test (LT) as well as analyzing the effect of 10 weeks of systematized training in soccer players' performance. LT consists of an uncertain number of sprints of 30m until a fall of performance of 10% is observed in relation to its initial speed. All the sprints are intercalated with 20 seconds of active …

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Influence Of The Pedaling Cadence In Determining The Critical Power In The Cycloergometer, Álvaro Luis Pessoa De Farias, Ivan Gustavo Masselli Dos Reis, Pedro Paulo Menezes Scariot, Gustavo Gomes De Araujo Mar 2012

Influence Of The Pedaling Cadence In Determining The Critical Power In The Cycloergometer, Álvaro Luis Pessoa De Farias, Ivan Gustavo Masselli Dos Reis, Pedro Paulo Menezes Scariot, Gustavo Gomes De Araujo

International Journal of Exercise Science: Conference Proceedings

The objective of this study was to determine the critical power (PCrit) using intensities of 230, 250, 270 and 300 Watts (W) under different speeds ranging from pedaling (60 and 80 rotations per minute - rpm). Two young adults, male, healthy and active, with an average age 22 years were selected. The test was conducted in cycle model Monark® ergomedic 894 E. The depth charges were chosen randomly, changing the relationship load and speed from the cadence. The exhaustion criterion was the voluntary withdrawal or failure to maintain the speed for 5 seconds. To determine the PCrit and anaerobic work …

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Influence Of Resistance Training On Muscle Lipid Content In Ovariectomized Rats, Richard Diego Leite, Jonato Prestes, Guilherme Borges Pereira, Celene Fernandes Bernardes Mar 2012

Influence Of Resistance Training On Muscle Lipid Content In Ovariectomized Rats, Richard Diego Leite, Jonato Prestes, Guilherme Borges Pereira, Celene Fernandes Bernardes

International Journal of Exercise Science: Conference Proceedings

The aim of this study was analyze the effect of the resistance training on muscle soleus lipid content in ovariectomized rats. Wistar adult female rats were grouped into: sedentary (S); ovariectomized sedentary (Sovx); resistance trained (T) and ovariectomized resistance trained (Tovx). A 12-week strength training that consisted to climb a 1.1-m vertical ladder with weights secured to rats in tail was used. The session was performed once every 3 days with a 4-9 climbs and 8-12 dynamic movements per climb. The muscle soleus lipid content (mg/100mg tissue) was determined by sulfo-vanilin reaction. For statistical analyzes ANOVA was used with p …

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General Modeling Of Vertical Jump Height With Countermovement Aids From Arms (Cmja) And Squat Jump (Sj) Techniques For Young Soccer Players, Tiago Volpi Braz, Leandro Mateus Pagoto Spigolon, João Paulo Borin Mar 2012

General Modeling Of Vertical Jump Height With Countermovement Aids From Arms (Cmja) And Squat Jump (Sj) Techniques For Young Soccer Players, Tiago Volpi Braz, Leandro Mateus Pagoto Spigolon, João Paulo Borin

International Journal of Exercise Science: Conference Proceedings

In the training of youngest soccer players, the knowledge of components of the explosive strength power as the contractile, elastic series and parallel series is fundamental in the sports preparation. Consequently, it is important to seek general models used as parameter for athletes, whether with morphofunctional characteristics, of sports preparation aspects or structure of competitive activity. So, this study aimed to seek an general model of vertical jump height with countermovement aids from arms (CMJa) and Squat Jump (SJ) techniques for young soccer players. Participants were 164 young soccer players (17.42±1.06 years) of juvenile and junior championship of Soccer Paulista …

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Evaluation Of Strength Training Effects On Neuromuscular System In Soccer Players In Pre-Competitive Period, Nathália Arnosti Vieira, João Paulo Borin, Antonio Carlos Gomes Mar 2012

Evaluation Of Strength Training Effects On Neuromuscular System In Soccer Players In Pre-Competitive Period, Nathália Arnosti Vieira, João Paulo Borin, Antonio Carlos Gomes

International Journal of Exercise Science: Conference Proceedings

The evaluation of training programs in soccer modality in various moments of periodization is important in the sports preparation control process. So in this way, this study aimed to investigate neuromuscular adaptations during strength training in professional soccer game in pre-competitive period. 15 professional soccer players, aged between 18 and 28 years participated of this study. Initially they were submitted to explosive strength test (Squat Jump), speed resistance (RAST) and displacement velocity (10 and 30m). Two evaluations were performed: one in the beginning of the study (M1), and the other (M2) after 12 weeks. In the first 6 weeks speed …

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Evaluation Of Neuromuscular Indicators In Volleyball Players In Different Periodization Stages, João Paulo Borin, Claudia Regina Cavaglieri, Marcelo De Castro Cesar, Rozangela Verlengia Mar 2012

Evaluation Of Neuromuscular Indicators In Volleyball Players In Different Periodization Stages, João Paulo Borin, Claudia Regina Cavaglieri, Marcelo De Castro Cesar, Rozangela Verlengia

International Journal of Exercise Science: Conference Proceedings

The understanding of athletes’ physical capacities in collective modalities during the training stages is important in the organization of sports preparation. So points up, the skeletal muscle adaptation capacity to systematized training is resulting mostly by neuromuscular alterations. The present study aims to evaluate the effects of a training program on neuromuscular variables, in volleyball athletes, in differents periodization stages. Participated of the study 12 women volleyball athletes, with 18.92±0.76 years, at least two years staff volleyball participation. The total training period was 40 weeks and after initial evaluation clinic and anthropometric, the volunteers were submitted to speed resistance test …

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Electromyographic Activity Of Elderly Vastus Lateralis Oblique Muscle Submitted To Periodized Resistance Training, Cláudio De Oliveira Assumpção, João Bartholomeu Neto, Christiano Bertoldo Urtado, Sérgio H. Borin Mar 2012

Electromyographic Activity Of Elderly Vastus Lateralis Oblique Muscle Submitted To Periodized Resistance Training, Cláudio De Oliveira Assumpção, João Bartholomeu Neto, Christiano Bertoldo Urtado, Sérgio H. Borin

International Journal of Exercise Science: Conference Proceedings

Resistance training (RT) is recommended for elderly with the objective to increase muscle strength and power trough neuromuscular adaptations, inducing increased motor and functional capacities. The electromyography (EMG) is an important instrument to analyze muscle function after diverse exercise training protocols. The objective of the present study was to analyze electromyographic activity of vastus lateralis oblique muscle (VLO) during maximal voluntary isometric contraction of elderly women submitted to 12 weeks of periodized RT. 16 women aged 65.5±3.6 years with a minimum of one year of previous experience in strength training were selected, they performed 24 sessions of RT divided in …

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Elastic Explosive Strength Alterations In Young Soccer Players In Preparatory Stage, Leandro Mateus Pagoto Spigolon, Tiago Volpi Braz, João Paulo Borin Mar 2012

Elastic Explosive Strength Alterations In Young Soccer Players In Preparatory Stage, Leandro Mateus Pagoto Spigolon, Tiago Volpi Braz, João Paulo Borin

International Journal of Exercise Science: Conference Proceedings

The explosive strength has been pointed as one of physical capacities present in decisive moments in soccer game. So, the aim of this study was to verify possible alterations in elastic explosive strength performance in ten young soccer players (16.54 ± 0.54 years; 73.10 ± 8.36 kg; 178.10 ± 7.67 cm). During the match in preparatory stage to championship, the elastic explosive strength was evaluated by vertical jump with countermovement aid from arms (CMJa), using contact plataform Jump Test® in 3 moments: before, in the interval and after game. BioEstat 5.0 software produced information in descriptive plan (mean and standard …

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Effects Of Warm-Up Before Stretching On Flexibility And Torque Development In Elderly, Rafaella Nascimento E Silva, Mateus Moraes Domingos, Guilherme Fleury Fina Speretta, Tânia De Fátima Salvini Mar 2012

Effects Of Warm-Up Before Stretching On Flexibility And Torque Development In Elderly, Rafaella Nascimento E Silva, Mateus Moraes Domingos, Guilherme Fleury Fina Speretta, Tânia De Fátima Salvini

International Journal of Exercise Science: Conference Proceedings

The purpose of the study was to analyze the effect of warm up exercises on flexibility and torque development of elderly subjects submitted to a protocol of hamstring muscles stretching. 28 subjects (9 men and 19 women), aged 66.4±6 years, volunteered for this study. Subjects were randomly divided into 2 protocols: a stretching protocol (group A) and a warm up and stretching protocol (group B). Both groups received the intervention for 4 weeks, with three sessions per week, consisting of 6 bouts of active stretching lasting 30 seconds. Subjects were evaluated on selection (T1), immediately before the intervention (T2), immediately …

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Effects Of A Training Season Of Master Runners On Maximal And Sub-Maximal Prescription Parameters, Lucas Samuel Tessutti, Lúcio Muramatsu, Danilo Lopes Ferrucci, Charles Ricardo Lopes Mar 2012

Effects Of A Training Season Of Master Runners On Maximal And Sub-Maximal Prescription Parameters, Lucas Samuel Tessutti, Lúcio Muramatsu, Danilo Lopes Ferrucci, Charles Ricardo Lopes

International Journal of Exercise Science: Conference Proceedings

Maximal oxygen uptake (VO2max) is considered an important physiological parameter to determinate cardiorespiratory capacity and has been used to predict the performance in middle and long-distance running athletes. Also the ventilatory threshold speed (sVT) and respiratory compensation point speed (sRCP) are important tools to predict performance and for training prescription. The aim of the present study was to demonstrate the changes in sVO2max, sVT, sRCP and running performance during the 2008 training season. Seven master runners (50.4 ± 8.4 years), six men and one woman, with more than five years experience running training were selected. The training period was divided …

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Effect Of Cadence To Determine Critical Power Using Non- Exhaustive Protocol In Cycle Ergometer, Wellington De Sousa Assis, Gustavo Gomes De Araujo, Ivan Gustavo Masselli Dos Reis, Álvaro Luis Pessoa De Farias Mar 2012

Effect Of Cadence To Determine Critical Power Using Non- Exhaustive Protocol In Cycle Ergometer, Wellington De Sousa Assis, Gustavo Gomes De Araujo, Ivan Gustavo Masselli Dos Reis, Álvaro Luis Pessoa De Farias

International Journal of Exercise Science: Conference Proceedings

In cycling the exercise power (w) is a product of cadence (rpm) and kilopounds (kp). The purpose of this study was to check the pedaling frequency influence on critical power (CP) determined using non-exhaustive aerobic capacity test (Chassain, 1986). Adult men (n=2) were submitted to four powers (100, 120, 130 and 150 w) in two different cadences (40 and 70 rpm) in cycloergometer (Monark 894 E). Two exercise bouts lasting 180 seconds by 90 seconds of interval were performed at an equal intensity. For each intensity, delta heart rate (ΔHR) was determined by subtraction of the maximum heart rate (MHR) …

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Determination Of Critical Power Using A Straight Bench Press With A Test Protocol, Luisa Zaine Polezi, Cláudio Luiz De Souza Meireles, Ivan Gustavo Masselli Dos Reis, Gustavo Gomes De Araújo Mar 2012

Determination Of Critical Power Using A Straight Bench Press With A Test Protocol, Luisa Zaine Polezi, Cláudio Luiz De Souza Meireles, Ivan Gustavo Masselli Dos Reis, Gustavo Gomes De Araújo

International Journal of Exercise Science: Conference Proceedings

The purpose of this study was to investigate the validity of critical force test from maximal lactate steady state (MLSS) during resistance test using straight bench press (SBP). Five healthy male volunteers aged (22.6 ± 2.88 years), weight (76.3 ± 11.49 kg) e height (182.6 ± 7.54 cm), trained in resistance exercise, performed four diferent tests to determine: one maximal effort (1RM), critical force using the critical power model (force vs 1/time limit – 20.25 and 30% of 1RM). The CF was the linear coefficient and the anaerobic impulse capacity (CIA) was the angular. MLSS was determined using loads of …

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Determination Of Blood Glucose Threshold For Indirect Method Using The Heart Rate In Runners, Giovanna Benjamin Togashi, Rafael Pelegrina Pieroni, Maria Fernanda Cury Rodrigues, Mateus Moraes Domingos Mar 2012

Determination Of Blood Glucose Threshold For Indirect Method Using The Heart Rate In Runners, Giovanna Benjamin Togashi, Rafael Pelegrina Pieroni, Maria Fernanda Cury Rodrigues, Mateus Moraes Domingos

International Journal of Exercise Science: Conference Proceedings

The Anaerobic Threshold (AT) is a parameter highly used for physical training prescription. The determination of AT can be performed by direct and indirect methods. The aim of this study was to determine one indirect method to predict the effort intensity that match to Blood Glucose Threshold (BGT), using the maximal Heart Rate from one incremental test in treadmill (HRmax) in runners, 37.57±2.87 years (n=7). The protocol consisted of one incremental test in treadmill, with initial speed of 8 km.h-1, increased by 1 km.h-1 every 3 minutes until the voluntary exhaustion. Blood glucose and HR measurements were done before the …

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Correlation Between Running Anaerobic Sprint Test And Anaerobic Work Capacity In Soccer Players, João Paulo Loures, Carlos Augusto Kalva Filho, Vanessa Holtz Franco, Diego André Bittencourt Mar 2012

Correlation Between Running Anaerobic Sprint Test And Anaerobic Work Capacity In Soccer Players, João Paulo Loures, Carlos Augusto Kalva Filho, Vanessa Holtz Franco, Diego André Bittencourt

International Journal of Exercise Science: Conference Proceedings

Running anaerobic sprint test (RAST) is theoretically an anaerobic measurement. Similarly, anaerobic work capacity (AWC), also evaluates anaerobic performance. However, their relationships as scientifically validated anaerobic tests are still controversial. This study evaluates associations between AWC and maximum velocity (Vmax), mean velocity (Vm) velocity, peak (PP), mean (PMab), absolute (PPab), and relative (PPre) power, fatigue index (IF), and peak lactatemia concentration ([la-]p). Nine sub-17 category soccer players from Ponta Grossa, PR, Brazil were submitted to six 35m efforts separated by 10s intervals to determine PPab, PMab, PPre, PMre, and IF (RAST). After three, five, and seven minutes blood samples were …

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Competitive Modeling Of Heart Rate In Brazilian Juniors Soccer Players, Tiago Volpi Braz, Leandro Mateus Pagoto Spigolon, João Paulo Borin Mar 2012

Competitive Modeling Of Heart Rate In Brazilian Juniors Soccer Players, Tiago Volpi Braz, Leandro Mateus Pagoto Spigolon, João Paulo Borin

International Journal of Exercise Science: Conference Proceedings

The heart rate (HR) has been used as indicator of competitive actions intensity in soccer players. The aim of this study was to analyze the competitive modeling of HR in eight brazilian juniors soccer players (18.84 ± 1.04 years; 71.19 ± 8.60Kg; 177.25 ± 6.04 cm) during a preparatory stage game. All were evaluated with Polar® heart rate monitor Team System model in five moments: warm-up (16min and 40s), recovery (8min and 15s), 1st half (48min), interval (7min and 45s), 2nd half (45min and 30s), and the heartbeats saved every 5 seconds. After collection, the data were kept in computational …

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Comparison Of Aerobic Capacity Determined By The Lactate Minimum Test Among Guard, Forward And Forward-Center Positions In Basketball Players, Gustavo Gomes De Araujo, Marcelo Papoti, Fúlvia B.M. Gobatto, Adelino S.R. Silva Mar 2012

Comparison Of Aerobic Capacity Determined By The Lactate Minimum Test Among Guard, Forward And Forward-Center Positions In Basketball Players, Gustavo Gomes De Araujo, Marcelo Papoti, Fúlvia B.M. Gobatto, Adelino S.R. Silva

International Journal of Exercise Science: Conference Proceedings

To aim of this study was to verify the aerobic capacity by lactate minimum test (LM) among different positions in professional basketball players. Twelve high performance basketball players (12 Major National Leagues, 26.7± 3.2 years) were evaluated by LM. The method of lactate elevation consisted of 6 maximum sprints of 35 m separated by 10 s of recovery each (Running Anaerobic Sprint Test). The progressive phase in LM consisted of 4 periods of 3 min each at 8, 10, 11 and 12 Km/h. After lactate elevation phase and progressive periods, 25μL samples of blood were collected to determine peak lactate …

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Comparison Between Glucose Threshold And Critical Velocity For Aerobic Capacity Determination In Men, João Marcos Pereira Duarte, Gustavo Mello Rissato, Vitor Karlos Piubelli Carrara, Runer Augusto Marson Mar 2012

Comparison Between Glucose Threshold And Critical Velocity For Aerobic Capacity Determination In Men, João Marcos Pereira Duarte, Gustavo Mello Rissato, Vitor Karlos Piubelli Carrara, Runer Augusto Marson

International Journal of Exercise Science: Conference Proceedings

The blood glucose threshold (GT) and critical velocity (CV) has been used for the assessment of the aerobic capacity for trained individuals in replace the blood lactate and ventilatory parameters for anaerobic threshold determination. But, there are few studies with physically active subjects. The purpose of this study was to measure, compare and correlate the running velocities associated with the GT and CV of a group of untrained men. Fifteen adult men (23±3.74 years old; 72±10.97 kg; 1.76±0.07 m; 21±5.36 % fat mass) performed the following tests: 1) 500m and 3km time trial (Vm500 and Vm3km); 2) Incremental test on …

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Comparison Between Critical Speed And Maximal Lactate Steady State In Amateur Distance Runners, Guilherme Pizzirani, Gustavo Gomes De Araujo, Ricardo Antonio D’Angelo, Pedro Paulo De Menezes Scariot Mar 2012

Comparison Between Critical Speed And Maximal Lactate Steady State In Amateur Distance Runners, Guilherme Pizzirani, Gustavo Gomes De Araujo, Ricardo Antonio D’Angelo, Pedro Paulo De Menezes Scariot

International Journal of Exercise Science: Conference Proceedings

The purpose of this study was to compare maximal lactate steady state (MLSS) and the critical speed (CS) in distance runners. Six male athletes were submitted to the CS test, to linear regression of the distances (800, 1.500, 3.000 and 5.000m). The CS was determined by the angular coefficient of the linear regression (Distance x Time). The predicted workloads for the MLSS determination were: 103; 100 and 98% of the CS, randomized and in a continuous way in subsequent days. In MLSS test, the athletes run for 30 min, and it was collected blood samples (25μL) at 10th and 30th …

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Comparison Among The Critical Velocity Determined By Three Conventional Models And Anaerobic Threshold In Running, Alessandro M. Zagatto, Wladimir Rafael Beck, Claudio A. Gobatto Mar 2012

Comparison Among The Critical Velocity Determined By Three Conventional Models And Anaerobic Threshold In Running, Alessandro M. Zagatto, Wladimir Rafael Beck, Claudio A. Gobatto

International Journal of Exercise Science: Conference Proceedings

The aim of this study was verify the use of critical velocity (CV) determined by three conventional models for prediction of the anaerobic threshold (AnT) in running. Thirteen Brazilian armed forces soldiers (age 24.6±6.6 years; body mass 74.4±7.6Kg; and body fat 17.8±5.2%) participated of the study. The CV was measured through four different intensities of running accomplished until exhaustion (tlim), it pre-adjusted to occur between 2 and 10 minutes (speed between 15km.h-1 and 21km.h-1). The CV was determined by three mathematical models, two by linear relations (velocity versus inverse of time - VCVx1/tlim; and distance versus time relations - VCDxT) …

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Changes In Markers Of Muscle Damage After Half-Ironman Triathlon, Marcos Bürger-Mendonça, Fernanda Coutinho Retondaro-Barbosa, Raquel Carius Da Silveira, Denisvaldo Vieira Silveira Mar 2012

Changes In Markers Of Muscle Damage After Half-Ironman Triathlon, Marcos Bürger-Mendonça, Fernanda Coutinho Retondaro-Barbosa, Raquel Carius Da Silveira, Denisvaldo Vieira Silveira

International Journal of Exercise Science: Conference Proceedings

Triathlon is a unique endurance sport that comprises a sequential swim, swim-to cycle transition, cycle, cycle-to-run transition, and run. The aim of present was to analyze the effect of half-ironman triathlon over biochemistry parameters related of muscle damage. Six well-trained male amateurs’ triathletes who completed the 2004 half-ironman triathlon participated in the study. Blood samples from six athletes were collected before and immediately after the triathlon competition. Creatinine kinase (CK) and lactate dehydrogenase (LDH) were measured. Pre and post race values were compared by paired t-tests. Significant changes after triathlon completion were found for CK (P= 0.001) and LDH (P= …

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Changes In Heart Rate And Blood Pressure In Sub-18 Soccer Players Tested With Running-Based Anaerobic Sprint Test, João Bartholomeu Neto, Cláudio De Oliveira Assumpção, Ricardo Yukio Asano, Marco Antonio De Freitas Souza Mar 2012

Changes In Heart Rate And Blood Pressure In Sub-18 Soccer Players Tested With Running-Based Anaerobic Sprint Test, João Bartholomeu Neto, Cláudio De Oliveira Assumpção, Ricardo Yukio Asano, Marco Antonio De Freitas Souza

International Journal of Exercise Science: Conference Proceedings

The Running-Based Anaerobic Sprint Test (RAST) is an important tool for prescribing and monitoring training. The aim of this study was to evaluate cardiovascular changes by the variables heart rate and blood pressure in soccer players tested with RAST. A trial with 20 soccer players who trained daily and participated in sub-18 soccer championships. The heart rate (HR) was collected at rest (before warming) and right after the end of the test, as well as the systolic (SBP) and diastolic (DBP) blood pressure. For statistics it was used the paired t-test with p<0.05. The collected data show that the values at resting time point can be considered normal for healthy young people and after the test it was observed that the HR and SBP increased significantly as compared with resting time, and the DPB presented no statistically changes. Conclusion: The results showed that the cardiovascular changes occurring in the RAST test, which is an effort with anaerobic features, are similar to changes in high-intensity aerobic efforts.

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Blood Lactate Kinetics During Four Sets Of Bench Press With 75% Of 1rm, Mateus Moraes Domingos, Maria Fernanda Cury Rodrigues, Tatienne Neder F. Da Costa, Rodrigo Ferro Magosso Mar 2012

Blood Lactate Kinetics During Four Sets Of Bench Press With 75% Of 1rm, Mateus Moraes Domingos, Maria Fernanda Cury Rodrigues, Tatienne Neder F. Da Costa, Rodrigo Ferro Magosso

International Journal of Exercise Science: Conference Proceedings

The purpose of the study was to analyze blood lactate kinetics during bench press exercise. 7 resistance-trained men (aged 21.66 ± 0.57 years, body mass 84.33 ± 9.50Kg, height 178.33 ± 0.05 cm, BMI 26.46 ± 2.11 kg/m2) volunteered for the study. The first session consisted of a 1-RM bench press test. After 48 hours, subjects returned and performed a warm up (20 repetitions with 40% 1-RM) and 4 sets of 8 repetitions with an intensity corresponding to 75% of 1-RM, separated by a 2-minute rest interval. Blood samples were collected at rest (R), after the warm up (W), at …

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Assessment Of The Heart Rate In Judo Athletes, Thiago Mattos Frota De Souza, Cláudio De Oliveira Assumpção, Christiano Bertoldo Urtado Mar 2012

Assessment Of The Heart Rate In Judo Athletes, Thiago Mattos Frota De Souza, Cláudio De Oliveira Assumpção, Christiano Bertoldo Urtado

International Journal of Exercise Science: Conference Proceedings

Judo is a martial art of Nippon Foundation origin which has been showing excellent results by Brazilian judokas in international competitions. In match dominates the use of anaerobic lactic metabolim, supported by high concentrations of blood lactate found and characteristic of intermittent exercises during the fights. The aim of this study was to evaluate the intensity of exercise in the Judo fight, comparing the heart rate between the light and heavy categories. Five male judokas, aged 20.6 ± 5.4 years, body mass of 87.9 ± 24.1 kg, from a competitive team. All the athletes were subjected to at least a …

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Analysis Of Relationship Between Retraction And Muscular Strength In Individuals Of Specific Populations, Douglas Reis Abdalla, Fábio Sisconeto Freitas, Dernival Bertoncello Mar 2012

Analysis Of Relationship Between Retraction And Muscular Strength In Individuals Of Specific Populations, Douglas Reis Abdalla, Fábio Sisconeto Freitas, Dernival Bertoncello

International Journal of Exercise Science: Conference Proceedings

The aim of this study was to verify the relationship between the degree of retraction and the muscular force in individuals of specific populations. Volunteers of the masculine gender, with age between 17 and 46 years old, were divided in four groups: GI (Sedentary, n=11); GII (Musculation, n=11); GIII (Worker, n=9); GIV (Worker + Musculation - n=10). Tests of retraction in the muscular groups of the shoulder had been evaluated, in knee and posterior chain. The palms grip strength was measured by dynamometry, was held to test the arm bending, strength of quadriceps, hamstrings and chest. In the results to …

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Running Aerobic Sprint Test Values Compared Under Different Footwear And Surface Conditions, Carlos Augusto Kalva Filho, João Paulo Loures, Vanessa Holtz Franco, Diego Andre Bittencourt Mar 2012

Running Aerobic Sprint Test Values Compared Under Different Footwear And Surface Conditions, Carlos Augusto Kalva Filho, João Paulo Loures, Vanessa Holtz Franco, Diego Andre Bittencourt

International Journal of Exercise Science: Conference Proceedings

Running aerobic sprint test (RAST) consists of six 35m maximum sprint efforts with 10s intervals to determine peak (PP), mean (PM), absolute (Pab), and relative (Pre) power and fatigue index (IF). This study compares PPab, PMab, PPre, PMre, IF and peak lactate concentration ([la-]P) under different conditions. Nine category sub-17 football players performed two RAST tests separated by 48h. The first was with trainers on cement (T+Ci) and the second with football boots on grass (C+Gr). Blood samples were taken after the tests to determine [la-]P. PPab, PMab, PPre, PMre, IF, and [la-]P values in both situations. The values were …

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Strength Training And Nandrolone Decanoate Decreased Myostatin Expression, Uliana Sbeguen Stotzer, Rita De Cássia Marqueti, Milena De Moura Paschoal, Heloisa Sobreiro Selistre De Araújo Mar 2012

Strength Training And Nandrolone Decanoate Decreased Myostatin Expression, Uliana Sbeguen Stotzer, Rita De Cássia Marqueti, Milena De Moura Paschoal, Heloisa Sobreiro Selistre De Araújo

International Journal of Exercise Science: Conference Proceedings

Nandrolone decanoate is a androgenic anabolic steroid (AAS) which targets the satellite cells in skeletal muscles. These cells are considered the stem cells of skeletal muscle, and they are essential for muscle growth and repair. Myostatin is a negative regulator of muscle mass that inhibits myoblast proliferation and differentiation. Recognizing the mechanisms related to AAS action in skeletal muscle is critical for a better understand of muscular physiology under AAS use. The aim of this study was to investigate the effects of aquatic plyometric training (APT) with overload associated with AAS on the gastrocnemius muscle of rats. Animals were grouped …

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Reproducibility Of The Lactate Minimum Test In Wistar Rats After Training At The Maximal Lactate Steady State Intensity, Glaucio Aparecido Da Silva, Gustavo Gomes De Araújo, Ivan Gustavo Masselli Dos Reis Michel Araújo, Leandro Moura Mar 2012

Reproducibility Of The Lactate Minimum Test In Wistar Rats After Training At The Maximal Lactate Steady State Intensity, Glaucio Aparecido Da Silva, Gustavo Gomes De Araújo, Ivan Gustavo Masselli Dos Reis Michel Araújo, Leandro Moura

International Journal of Exercise Science: Conference Proceedings

The aim of this study was to verify the reproducibility of the lactate minim (LM) test after four weeks of aerobic training, as well as its validity with the maximal lactate steady state (MLSS) in Wistar rats submitted to swimming exercise. Ten rats with 90 days were used. The aerobic and anaerobic capacity was determined by the LM test before and after the training. The protocol of MLSS was also applied before and after the training. Training was accomplished for four weeks, being the first two weeks with a volume of 30 minutes and the other two weeks with a …

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Maximal Lactate Steady State In Swimming Tethered, Marcelo Papoti, Ricardo Vitório, Gustavo G. Araújo, Adelino S. R. Da Silva Mar 2012

Maximal Lactate Steady State In Swimming Tethered, Marcelo Papoti, Ricardo Vitório, Gustavo G. Araújo, Adelino S. R. Da Silva

International Journal of Exercise Science: Conference Proceedings

This study investigated whether aerobic capacity (AC) in tethered swimming corresponds to maximal lactate steady state (MLSS) and its correlation with 30 min (V30) and 400m (V400) free swimming velocity. Twenty-five swimmers were submitted to an incremental tethered swimming test (ITS) with each stage lasting 3 minutes, initial load 20N, with 10N increments and a 30s interval to collect blood samples and lactatemia ([La-]). The abrupt increase in [La-] against force (F) corresponded to AC (ACBI). The points obtained for [La-] against force (N) were adjusted with an exponential curve model to determine AC corresponding to 3.5mmol.l-1 (AC3.5) and 4.0mmol.l-1 …

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Laboratory Tests Ability To Predict Aerobic Performance In Army Athletes, Paulo Eduardo Redkva, Raphael Cailleaux, Vanessa Holtz Franco, Cristina Dos Santos Mar 2012

Laboratory Tests Ability To Predict Aerobic Performance In Army Athletes, Paulo Eduardo Redkva, Raphael Cailleaux, Vanessa Holtz Franco, Cristina Dos Santos

International Journal of Exercise Science: Conference Proceedings

Although VO2max is the index which represents maximum aerobic power, the corresponding exercise velocity (vVO2max) can be different in athletes with the same VO2max values. This study investigated associations between absolute (VO2pabs), relative (VO2pre) VO2peak, and vVO2max for aerobic performances determined in the field. Thirteen runners, aged 20.1±2.1 years, height 170±0.1 cm, and weight 66.0±3.7 kg participated from the 13th Armoured Infantry Battalion (Brazilian Army) based in Ponta Grossa, PR, Brazil. Participants were submitted to an exhaustive progressive test in a treadmill with 12km.h-1 initial velocity, 3min stages, and 1 km.h-1 increments. Breath-by-breath gas samples were collected (Parvomedics – TrueOne, …

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Influence Of Body Mass Index On Leukocytes Count In Women, Anelena Frollini, Rodrigo Dias, Carolina Souza, Diego Brunelli Mar 2012

Influence Of Body Mass Index On Leukocytes Count In Women, Anelena Frollini, Rodrigo Dias, Carolina Souza, Diego Brunelli

International Journal of Exercise Science: Conference Proceedings

The nutritional status of an individual can directly interfere in the immune system. The aim of the present study was to analyze the influence of body mass index (BMI) on the total and differential circulating leukocytes count in women. 112 women aged 32.55±7.48 years, divided into 6 groups: G1 - low weight (n=8), G2 - eutrophic (n=26), G3 - overweight (n=20), G4 - obesity I (n=16), G5 - obesity II (n=19) and G6 - obesity III (n=23) were selected. Regular physical activity practitioners, diabetic, hypertensive and/or individuals with thyroid gland alterations were excluded. The blood samples were collected from the …

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