Análise dos ângulos da articulação do joelho na largada com relação ao tempo final em ciclismos BMX
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Revista Mineira de Educação Física
Abstract
Este estudo teve como objetivo principal analisar os ângulos da articulação do joelho durante a largada e as possíveis correlações com o tempo final da prova de ciclismo BMX em uma competição oficial da modalidade. Fizeram parte do estudo 20 atletas do sexo masculino, das categorias Elite e Junior Men, com idade média de 20,3 ± 3,0 anos, os quais participam regularmente de competições estaduais, nacionais e internacionais, tendo todos mais de cinco anos de experiência na prática do ciclismo BMX competitivo. Foi medido o ângulo da articulação do joelho em três momentos durante a largada: na posição estática, no primeiro movimento perceptível e no momento de desprendimento, ouseja, ao ultrapassar o portão de largada. Além disso, foi feita a correlação entre o ângulo de desprendimento e o tempo total da tomada de tempo (Time Trial). Foi encontrada diferença significativa entre o ângulo do primeiro movimento com relação aos ângulos da posição estática e o ângulo de desprendimento. Não foi encontrada correlação significativa entre o ângulo de desprendimento e o tempo total da tomada de tempo. O estudo conclui que o tempo total da prova não tem correlação com o ângulo de desprendimento dos atletas, talvez porque, mesmo sendo um esforço de curta duração, em média de 35 segundos, as curvas e os obstáculos no percurso são situações que fazem a diferença para os melhores atletas em obter os melhores resultados.
This study aimed to analyze the knee joint angles during the starting and the possible correlations with the final time of BMX cycling race in an official competition of the sport. Twenty (20) male athletes participated of this study, of “Elite” and “Junior Men” categories with a mean age of 20.3 ± 3.0 years old, which regularly participate of state, national and international compet itions, all having more than five years of experience in BMX cycling competitive practice. The knee joint angle was measured three times during the beginning: in the static position, in the first noticeable movement and at the start time , in other words, to overcome the starting gate. Moreover, the correlation between the start angle and the total time of the Time Trial was made . It was found a significant difference between the angle of the first movement with respect to the angles of the static position and the start angle. There was no significant correlation between the start angle and the total time of the Time Trial. The study concludes that the total race time has no correlation with the athletes’ start angle, perhaps because, even as a short-term effort, on average 35 seconds, the curves and obstacles in the path are situations that make a difference for the best athletes in obtaining the best results.
This study aimed to analyze the knee joint angles during the starting and the possible correlations with the final time of BMX cycling race in an official competition of the sport. Twenty (20) male athletes participated of this study, of “Elite” and “Junior Men” categories with a mean age of 20.3 ± 3.0 years old, which regularly participate of state, national and international compet itions, all having more than five years of experience in BMX cycling competitive practice. The knee joint angle was measured three times during the beginning: in the static position, in the first noticeable movement and at the start time , in other words, to overcome the starting gate. Moreover, the correlation between the start angle and the total time of the Time Trial was made . It was found a significant difference between the angle of the first movement with respect to the angles of the static position and the start angle. There was no significant correlation between the start angle and the total time of the Time Trial. The study concludes that the total race time has no correlation with the athletes’ start angle, perhaps because, even as a short-term effort, on average 35 seconds, the curves and obstacles in the path are situations that make a difference for the best athletes in obtaining the best results.
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SILVA, Renato Pereira, PUSSIELDI, Guilherme de Azambuja. Análise dos ângulos da articulação do joelho na largada com relação ao tempo final em ciclismos BMX. Revista de Educação Física, Viçosa, v. 23, n. 3, p. 47-57, 2015.
