Leandro Dutra - Academia.edu (original) (raw)

Papers by Leandro Dutra

The aims of this study were: 1) to propose predictive equations for gait energy expenditure (GEE)... more The aims of this study were: 1) to propose predictive equations for gait energy expenditure (GEE) of young individuals in three situations: a) when the identification of the gait velocity is possible; b) when heart rate (HR) monitoring is possible; and c) when neither the velocity identification nor the HR monitoring is possible; and 2) to validate the GEE made by the HR Polar M71® monitor. Thirty individuals (16 males, 22.7 ± 2.6 years and 14 female, 22.1 ± 2.1 years), non-athletes, physical education students were instructed to walk on the treadmill with 1% inclination, in self-selected low, moderate and high intensity velocities, during 6 minutes in each velocity. The VO2, measured by the Aerosport Metabolic Analyzer Teem 100, HR and GEE estimated by the monitor, were registered in the last 2 minutes of each load. It was concluded that the best GEE prediction is done with the use of the gait velocity and the individual’s body weight. HR for prediction of GEE should be accompanied...

... ISSN 1415-8426 Vinicius Oliveira Damasceno 1,4 Leandro Nogueira Dutra 5 Leonardo Gonçalves Ri... more ... ISSN 1415-8426 Vinicius Oliveira Damasceno 1,4 Leandro Nogueira Dutra 5 Leonardo Gonçalves Ribeiro1,4 Viviane Ribeiro Ávila Vianna 1,4 Jeferson Macedo Vianna5 Jeferson Silva Novaes 2,3 Jorge Roberto Perrout Lima5 ...

O estabelecimento de metas tem sido visto como uma estrategia motivacionalpara melhorar o desempe... more O estabelecimento de metas tem sido visto como uma estrategia motivacionalpara melhorar o desempenho atraves da direcao e manutencao da atencaopara um determinado objetivo a ser alcancado, e pode ser estabelecida paraum individuo ou para um grupo. O objetivo deste estudo foi investigar os efeitosdo nivel de dificuldade da meta de grupo em aprendizagem motora comsujeitos experientes. A amostra consistiu de 24 sujeitos do sexo masculino,com idade entre 15 e 16 anos, experientes na tarefa. A tarefa consistiu narecepcao de saque com rotacao do voleibol. Os sujeitos foram distribuidos pordesignacao aleatoria em dois grupos experimentais com meta especifica a 10%(G10%) e a 30% (G30%) alem do desempenho inicial. O experimento constoude tres fases: avaliacao de entrada (27 tentativas), fase de aquisicao (810tentativas) e teste de retencao (27 tentativas) uma semana apos o termino dafase de aquisicao. Os resultados das medidas de precisao e consistenciamostraram diferencas estatisticamente s...

Research, Society and Development

This study aimed to analyze how situational constraints (lifter distance to attackers and blocker... more This study aimed to analyze how situational constraints (lifter distance to attackers and blockers) influenced a volleyball setter’s distribution after reception that allow an organized attack with all attack options and the relationship between the attack tempo and the effect of the attack according to the setting location. The sample comprised 22 games in the 2018 Men's Volleyball World Championship. The results showed that there was a difference in the distribution while considering the distance between the setter and the striker in position 4 [χ2 (4) = 28.657; p <0.001], the striker in position 6 [χ2 (4) = 23.828; p <0.001], the blocker in position 4 [χ2 (4) = 16.566; p = 0.002] and there was an effect of the attack tempo on the effect of attacks performed by position 6 [χ2 (3) = 15.438; p = 0.001]. From these findings, it is clear that the setter's decision-making is related to the ecological dynamics of the game and to situational constraints, with the availabili...

Journal of Human Sport and Exercise

This study investigated the effects of group goals difficulty on volleyball jump topspin serve re... more This study investigated the effects of group goals difficulty on volleyball jump topspin serve reception with 36 experienced volleyball players. The volunteers performed an initial evaluation, whose results were organized in accordance to the level of performance and them divided into three similar groups: no goal, 10% and 30% group goal difficulty. Volunteers performed 810 receptions divided in 10 sessions during acquisition phase whose performance was scored from zero to 14 points. On retention test, the 30% of goal difficulty showed higher performance accuracy than 10% or no goal at all.

Motriz Revista De Educacao Fisica, Mar 1, 2014

The present study investigated the correlation between Transition I with victory in volleyball ma... more The present study investigated the correlation between Transition I with victory in volleyball matches. The 2002 South-American Youth Men's Championship was recorded and the Transition I was analyzed and classified as negative, null or positive. Results of the efficiency in Transition I was calculated using t test for independent samples and compared to the efficiency between teams during each set and matches. Spearman correlation assessed the relationship between efficiency in each set and results of the matches with the final ranking in the championship. The results showed that the winning teams exhibited higher efficiency in Transition I, as well as a positive relationship of higher efficiency in Transition I with all of their results. The higher efficiency in Transition I is related to victory in volleyball matches.

Motriz: Revista de Educação Física, 2014

The present study investigated the correlation between Transition Iwith victory in volleyball mat... more The present study investigated the correlation between Transition Iwith victory in volleyball matches. The 2002 South-American Youth Men's Championship was recorded and the Transition I was analyzed and classified as negative, null or positive. Results of the efficiency in Transition I was calculated using t test for independent samples and compared to the efficiency between teams during each set and matches. Spearman correlation assessed the relationship between efficiency in each set and results of the matches with the final ranking in the championship. The results showed that the winning teams exhibited higher efficiency in Transition I, as well as a positive relationship of higher efficiency in Transition I with all of their results. The higher efficiency in Transition I is related to victory in volleyball matches.

ABSTRACT RESUMO O objetivo deste trabalho de revisão foi relacionar o estudo das variáveis atuant... more ABSTRACT RESUMO O objetivo deste trabalho de revisão foi relacionar o estudo das variáveis atuantes no processo de aquisição de movimentos, especificamente a demonstração e a instrução verbal, com o processo ensino-aprendizagem das técnicas esportivas. Essas informações são importantes porque aumentam a qualidade da intervenção de profissionais que trabalham com o ensino e treinamento de modalidades esportivas. Dessa forma, uma abordagem mais aprofundada desse tema pode respaldar, de forma mais coerente, o uso de informações que dizem respeito a "que técnica utilizar" e "como executar esta técnica" para o alcance das metas estabelecidas por cada tipo de esporte. Palavras-chave: aprendizagem motora, demonstração, instrução verbal, habilidades esportivas. Considerações Iniciais Após o início da década de 1990, observa-se um novo posicionamento em relação às pesquisas na área do Comportamento Motor. Esse novo posicionamento procura utilizar o conhecimento produzido nas pesquisas sobre Controle Motor, realizadas dentro de Recebido para publicação em 08/07 e aprovado em 03/2008.

... skinfolds. Vinicius Oliveira Damasceno 1,4 Leandro Nogueira Dutra 5 Leonardo Gonçalves Ribeir... more ... skinfolds. Vinicius Oliveira Damasceno 1,4 Leandro Nogueira Dutra 5 Leonardo Gonçalves Ribeiro 1,4 Viviane Ribeiro Ávila Vianna 1,4 Jeferson Macedo Vianna 5 Jeferson Silva Novaes 2,3 Jorge Roberto Perrout Lima 5 1 ...

Rev Bras Cine Des …, 2003

The aims of this study were: 1) to propose predictive equations for gait energy expenditure (GEE)... more The aims of this study were: 1) to propose predictive equations for gait energy expenditure (GEE) of young individuals in three situations: a) when the identification of the gait velocity is possible; b) when heart rate (HR) monitoring is possible; and c) when neither the velocity identification nor the HR monitoring is possible; and 2) to validate the GEE made by the HR Polar M71 ® monitor. Thirty individuals (16 males, 22.7 ± 2.6 years and 14 female, 22.1 ± 2.1 years), non-athletes, physical education students were instructed to walk on the treadmill with 1% inclination, in self-selected low, moderate and high intensity velocities, during 6 minutes in each velocity. The VO 2, measured by the Aerosport Metabolic Analyzer Teem 100, HR and GEE estimated by the monitor, were registered in the last 2 minutes of each load. It was concluded that the best GEE prediction is done with the use of the gait velocity and the individual's body weight. HR for prediction of GEE should be accompanied by the gender and rest HR. The perceived exertion scale proposed in this study should be utilized only when it is not possible to register the velocity or the HR. The use of other scales of perceived exertion is encouraged. The HR Polar M71 monitor is a valid instrument for GEE estimation, with the limitation that is necessary that HR exceeds 100 bpm. Its precision is enhanced at high intensity gait.

Research, Society and Development

Journal of Human Sport and Exercise

Motriz Revista De Educacao Fisica, Mar 1, 2014

Motriz: Revista de Educação Física, 2014

Rev Bras Cine Des …, 2003

The aims of this study were: 1) to propose predictive equations for gait energy expenditure (GEE)... more The aims of this study were: 1) to propose predictive equations for gait energy expenditure (GEE) of young individuals in three situations: a) when the identification of the gait velocity is possible; b) when heart rate (HR) monitoring is possible; and c) when neither the velocity identification nor the HR monitoring is possible; and 2) to validate the GEE made by the HR Polar M71 ® monitor. Thirty individuals (16 males, 22.7 ± 2.6 years and 14 female, 22.1 ± 2.1 years), non-athletes, physical education students were instructed to walk on the treadmill with 1% inclination, in self-selected low, moderate and high intensity velocities, during 6 minutes in each velocity. The VO 2, measured by the Aerosport Metabolic Analyzer Teem 100, HR and GEE estimated by the monitor, were registered in the last 2 minutes of each load. It was concluded that the best GEE prediction is done with the use of the gait velocity and the individual's body weight. HR for prediction of GEE should be accompanied by the gender and rest HR. The perceived exertion scale proposed in this study should be utilized only when it is not possible to register the velocity or the HR. The use of other scales of perceived exertion is encouraged. The HR Polar M71 monitor is a valid instrument for GEE estimation, with the limitation that is necessary that HR exceeds 100 bpm. Its precision is enhanced at high intensity gait.