Effect of projection variables on throw distance and flight time in an american football throw
(Einfluss von Projektionsvariablen auf Wurfweite und Flugzeit im American-Football)
In American football the ball is usually thrown to the receiver with near-maximum speed and a low angle so as to minimize the flight time. In this study a player performed maximum-effort throws using a wide range of projection angles. The throws were recorded by a video camera and a 2D biomechanical analysis was conducted to obtain mathematical expressions for the relationships between the projection variables. These expressions were then inserted into a model of the aerodynamic flight of an American football, and the throw distance and flight time were calculated. We that found the relationships between the projection variables had only a small effect on the projection angle and flight time for a pass to a receiver at a given distance. Players probably get the projection angle in a throw very nearly right through trial-and-error practice.
© Copyright 2017 ISBS Proceedings Archive (Michigan). Northern Michigan University. Veröffentlicht von International Society of Biomechanics in Sports. Alle Rechte vorbehalten.
Schlagworte: | Biomechanik dreidimensional Technik Analyse Video American Football Bewegung |
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Notationen: | Trainingswissenschaft Spielsportarten |
Veröffentlicht in: | ISBS Proceedings Archive (Michigan) |
Herausgeber: | W. Potthast, A. Niehoff, S. David |
Veröffentlicht: |
Cologne
International Society of Biomechanics in Sports
2017
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Jahrgang: | 35 |
Heft: | 1 |
Seiten: | 580-583 |
Dokumentenarten: | Kongressband, Tagungsbericht elektronische Zeitschrift Artikel |
Sprache: | Englisch |
Level: | hoch |