Análisis biomecánico en dos dimensiones (2D) de los lanzamientos en balonmano

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Análisis biomecánico en os dimens ones (2D) de os lanzamient  s en balonmano

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INDICE

1. INTRODUCCION

Pág. 1-2

2. MATERIAL DE LA PRACTICA

Pág. 2

3. DESARROLLO DE LA PRÁCTICA.

Pág. 2-3

4. RESULTADOS Y CONCLUSIONES CONCLUSIONES

Pág. 3-13

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CCAFD – Biomecánica de las técnicas deportivas Análisis biomecánico en dos dimensiones (2D) de los lanzamientos en balonmano

1. INTRODUCCIÓN El balonmano, uno de los deportes más practicados de Europa (aunque no con la publicidad de otros deportes tales como el fútbol o baloncesto…), es un deporte de pelota de cooperación-oposición que consiste en conseguir más goles que el equipo contrario. En un deporte tan conocido es normal que sus exigencias en el alto rendimiento sean altas, por lo que es normal que haya numerosos estudios relacionados con la mejora en el rendimiento en los jugadores de balonmano.

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CCAFD – Biomecánica de las técnicas deportivas Análisis biomecánico en dos dimensiones (2D) de los lanzamientos en balonmano

FOTOGRAMETRÍA 2D

El análisis de una grabación de vídeo para realizar mediciones de parámetros cinemáticos del movimiento grabado se denomina fotogrametría. Este análisis se puede realizar en dos dimensiones o en tres dimensiones. Cuando realizamos un análisis en dos dimensiones únicamente necesitamos una cámara de vídeo. Para ello, debemos asegurarnos que el movimiento se realice en unplano concreto denominado plano de calibración, en el cuál realizaremos inicialmente una calibración para tener un factor escala con el que poder medir longitudes reales. Si no es necesario medir longitudes no es tampoco necesario que el movimiento se realice en el plano de calibración, sino que basta con que se realice en cualquier plano

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CCAFD – Biomecánica de las técnicas deportivas Análisis biomecánico en dos dimensiones (2D) de los lanzamientos en balonmano

Los lanzamientos serán realizados por tres alumnos de cada grupo y, para su correcto análisis en dos dimensiones, deberán permanecer en un mismo plano, denominado plano de calibración. Tendremos que colocar la cámara perpendicularmente a dicho plano y realizar previamente una calibración con un objeto de dimensiones conocidas. Una vez los videos están guardados, escogemos el tipo de lanzamiento a analizar y con los lanzamientos de los 3 sujetos continuaremos sacando los datos fotograma a fotograma analizarlos: 1. Se guardan los fotogramas desde el momento que se inicia el armado hasta que se lanza el balón (en esta práctica ha sido realizado con el Virtual Dub) 2. Se extraen las situaciones tanto en el eje X como en el eje Y de las

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CCAFD – Biomecánica de las técnicas deportivas Análisis biomecánico en dos dimensiones (2D) de los lanzamientos en balonmano

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CCAFD – Biomecánica de las técnicas deportivas Análisis biomecánico en dos dimensiones (2D) de los lanzamientos en balonmano

SUJETO 1 Lanzamiento 1

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CCAFD – Biomecánica de las técnicas deportivas Análisis biomecánico en dos dimensiones (2D) de los lanzamientos en balonmano

SUJETO 1 Lanzamiento 2

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CCAFD – Biomecánica de las técnicas deportivas Análisis biomecánico en dos dimensiones (2D) de los lanzamientos en balonmano

SUJETO 1 Lanzamiento 3

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CCAFD – Biomecánica de las técnicas deportivas Análisis biomecánico en dos dimensiones (2D) de los lanzamientos en balonmano

SUJETO 2 Lanzamiento 1

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CCAFD – Biomecánica de las técnicas deportivas Análisis biomecánico en dos dimensiones (2D) de los lanzamientos en balonmano

SUJETO 2 Lanzamiento 2

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