Instrumentação biomecânica aplicada à análise do desempenho do chute em jogadores de futebol de campo
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Data
2012-02-06
Autores
Silva, Marcelo Guimarães [UNESP]
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Editor
Universidade Estadual Paulista (Unesp)
Resumo
O chute no futebol é um gesto técnico bastante estudado, devido a sua importância dentro de uma partida, porém existem algumas lacunas importantes a serem preenchidas, principalmente quanto a sua análise no aspecto quantitativo. Este estudo teve como objetivo encontrar um sistema eficaz de análise dos fatores técnicos intervenientes na performance motora de jogadores de futebol de campo. Neste sentido tornou-se de fundamental importância avaliar parâmetros biomecânicos aplicados durante o chute com o dorso do pé em atletas de categorias de base, a fim de melhorar a performance motora e corrigir falhas não detectadas pela análise qualitativa. Desta forma foi elaborado um sistema de medidas específico, que teve como ponto central da pesquisa, a análise do movimento de chute ao gol. Utilizou-se a cinemetria bidimensional (2D), visando analisar o ângulo formado pelo joelho da perna de apoio; a força de reação do solo ou força vertical (Fv); o COP (centro de pressão) medido pelo equilíbrio do pé de apoio e deslocamento em fases determinantes do chute; e através de acelerômetro, encontrou-se o comportamento da aceleração ou desaceleração produzidas nas fases do movimento de chute. A amostra foi constituída de quatro indivíduos com idades compreendidas entre 16 e 19 anos, atletas da equipe do Resende Futebol Clube, sendo dois da categoria juniores e dois da categoria juvenil. O teste consistiu na execução de chutes com o dorso do pé cujo objetivo foi acertar o alvo posicionado a nove metros do voluntário; o chute caracterizou-se por ser funcional, mas ao mesmo tempo empregando potência. Os resultados encontrados foram coerentes para Fv e aceleração na análise inter-voluntários. Em relação à velocidade alcançada pela bola para inter-voluntários, os resultados apresentaram padrão esperado...
The kick in soccer is a technical gesture extensively studied because of its importance within a game, but there are some important gaps to be filled, specially regarding its analysis on the quantitative aspect. This study aimed to find an effective system of analysis of technical factors involved in motor control performance of soccer players in the field. In this sense has become of paramount importance to assess biomechanical parameters applied during the kick with the instep of the basic categories of athletes, to improve motor performance and to correct errors not detected by qualitative analysis. Thus was developed a system of specific measures, which had as its central point of the research, analysis of the motion of kicking the goal. Kinemetry used the two-dimensional (2D) to evaluate the angle formed by the knee of the supporting leg, the ground reaction force, especifically vertical force (Fv), the COP (center of pressure) measured by the balance of the foot support and decisive shift in phases of the kick, and by accelerometer, found the behavior of acceleration or deceleration produced in the phases of the motion of kick. The sample consisted of four individuals aged between 16 and 19 years, athletes team Resende Football Club, two juniors and two categories of the youth category. The test consisted in the execution of kicks with the instep whose goal was to hit the target positioned at nine meters of the volunteer, the kick was characterized by being functional, but at the same time employing power. The results were consistent for Fv and acceleration parameters between inter-volunteers and the ball speeds were registered according with literature. The results showed the expected pattern, however, COP parameter presented the individual pattern between inter-volunteers and showed same trend for intra- volunteers
The kick in soccer is a technical gesture extensively studied because of its importance within a game, but there are some important gaps to be filled, specially regarding its analysis on the quantitative aspect. This study aimed to find an effective system of analysis of technical factors involved in motor control performance of soccer players in the field. In this sense has become of paramount importance to assess biomechanical parameters applied during the kick with the instep of the basic categories of athletes, to improve motor performance and to correct errors not detected by qualitative analysis. Thus was developed a system of specific measures, which had as its central point of the research, analysis of the motion of kicking the goal. Kinemetry used the two-dimensional (2D) to evaluate the angle formed by the knee of the supporting leg, the ground reaction force, especifically vertical force (Fv), the COP (center of pressure) measured by the balance of the foot support and decisive shift in phases of the kick, and by accelerometer, found the behavior of acceleration or deceleration produced in the phases of the motion of kick. The sample consisted of four individuals aged between 16 and 19 years, athletes team Resende Football Club, two juniors and two categories of the youth category. The test consisted in the execution of kicks with the instep whose goal was to hit the target positioned at nine meters of the volunteer, the kick was characterized by being functional, but at the same time employing power. The results were consistent for Fv and acceleration parameters between inter-volunteers and the ball speeds were registered according with literature. The results showed the expected pattern, however, COP parameter presented the individual pattern between inter-volunteers and showed same trend for intra- volunteers
Descrição
Palavras-chave
Biomecânica, Kick soccer - Motor control performance
Como citar
SILVA, Marcelo Guimarães. Instrumentação biomecânica aplicada à análise do desempenho do chute em jogadores de futebol de campo. 2012. 107 f. Dissertação (mestrado) - Universidade Estadual Paulista, Faculdade de Engenharia de Guaratinguetá, 2012.