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A influência da velocidade da distribuição na eficácia de ataque do jogador de entrada de rede de voleibol
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Orientador(es)
Resumo(s)
O aumento da velocidade de jogo no voleibol tem sido um fundamental para que a oposição, através do bloco, tenha mais dificuldades em contrariar a ação do ataque. Neste sentido, o presente estudo pretendeu analisar se a velocidade do passe no voleibol de élite masculino pode prever a eficácia de ataque do atacante da posição de entrada de rede. Foram observados um total de 32 jogos de competições masculinas de elite, e 260 ações de ataque realizadas pelos atacantes ponta de seis seleções nacionais foram analisadas através do software Kinovea. Foram realizados testes t independentes e, quando as diferenças entre grupos foram significativas (ou seja, p < .050), essas variáveis foram incluídas no modelo como covariáveis. Além disso, para analisar as variáveis preditoras da eficácia, foram utilizadas regressão logística binária e regressão linear. Os resultados mostraram que quanto melhor a receção, maior a velocidade do passe na distribuição; no entanto, nem a velocidade da levantada nem o nível da equipa predizem a eficácia de ataque. Assim, pode- se concluir que o desempenho individual do atacante ponta deve ser desenvolvido em vez da velocidade da levantada. Não obstante, para aumentar a velocidade do jo go, as equipas devem melhorar a eficácia da receção. É importante que as equipas encontrem uma velocidade de levantada que equilibre o benefício de uma levantada mais rápida com a necessidade de controlo e precisão do atacante ponta.
The increase in game speed in volleyball has been a key factor in making it more difficult for the opposition, through blocking, to counterattack actions. In this regard, the present study aimed to analyze whether the speed of the set in elite men's volleyball can predict the attack effectiveness of the outside hitter. A total of 32 games of elite male competitions were observed, and 260 attack actions performed by the outside hitters from six national teams were analyzed throughout the Kinovea Software. Independent-sample t-tests were conducted and, when differences between groups were significant (i.e., p < .050), those variables were included in the model as covariates. Additionally, to analyze the predictor variables of efficacy, logistic binary regression and linear regression were used. Results showed that the better the reception, the higher the set speed; however, neither the set speed nor the team level predict the attack efficacy. Thus, it can be concluded that the individual performance of the outside hitter should be developed instead the set speed. Notwithstanding, to increase the speed of the game, teams should improve the receptor efficacy. It is important for teams to find a set speed that balances the benefit of a faster set with the need for control and accuracy from the outside hitter.
The increase in game speed in volleyball has been a key factor in making it more difficult for the opposition, through blocking, to counterattack actions. In this regard, the present study aimed to analyze whether the speed of the set in elite men's volleyball can predict the attack effectiveness of the outside hitter. A total of 32 games of elite male competitions were observed, and 260 attack actions performed by the outside hitters from six national teams were analyzed throughout the Kinovea Software. Independent-sample t-tests were conducted and, when differences between groups were significant (i.e., p < .050), those variables were included in the model as covariates. Additionally, to analyze the predictor variables of efficacy, logistic binary regression and linear regression were used. Results showed that the better the reception, the higher the set speed; however, neither the set speed nor the team level predict the attack efficacy. Thus, it can be concluded that the individual performance of the outside hitter should be developed instead the set speed. Notwithstanding, to increase the speed of the game, teams should improve the receptor efficacy. It is important for teams to find a set speed that balances the benefit of a faster set with the need for control and accuracy from the outside hitter.
Descrição
Palavras-chave
Voleibol Desempenho desportivo Software Kinovea Eficácia de ataque Modelo de jogo Volleyball Sports performance Kinovea software Attack efficacy Game model
Contexto Educativo
Citação
Editora
Instituto Politécnico de Viana do Castelo
Licença CC
Sem licença CC