Please use this identifier to cite or link to this item:
http://bura.brunel.ac.uk/handle/2438/7999
Title: | Optimum projection angle for attaining maximum distance in a rugby place kick |
Authors: | Linthorne, NP Stokes, TG |
Keywords: | Biomechanics;Kinematics;Projectile |
Issue Date: | 2013 |
Publisher: | Asist Group |
Citation: | Journal of Sports Science and Medicine, Online first, 2013 |
Abstract: | This study investigated the effect of projection angle on the distance attained in a rugby place kick. A male rugby player performed 49 maximum-effort kicks using projection angles of between 20 and 50°. The kicks were recorded by a video camera at 50 Hz and a 2 D biomechanical analysis was conducted to obtain measures of the projection velocity and projection angle of the ball. The player's optimum projection angle was calculated by substituting a mathematical expression for the relationship between projection velocity and projection angle into the equations for the aerodynamic flight of a rugby ball. We found that the player's calculated optimum projection angle (30.6°, 95% confidence limits ± 1.9°) was in close agreement with his preferred projection angle (mean value 30.8°, 95% confidence limits ± 2.1°). The player's calculated optimum projection angle was also similar to projection angles previously reported for skilled rugby players. The optimum projection angle in a rugby place kick is considerably less than 45° because the projection velocity that a player can produce decreases substantially as projection angle is increased. Aerodynamic forces and the requirement to clear the crossbar have little effect on the optimum projection angle. |
Description: | This article has been made available through the Brunel Open Access Publishing Fund. |
URI: | http://www.jssm.org/inpres/2981/2981text.php http://bura.brunel.ac.uk/handle/2438/7999 |
ISSN: | 1303-2968 |
Appears in Collections: | Sport Brunel OA Publishing Fund Dept of Life Sciences Research Papers |
Files in This Item:
File | Description | Size | Format | |
---|---|---|---|---|
Notice.pdf | 57.28 kB | Adobe PDF | View/Open |
Items in BURA are protected by copyright, with all rights reserved, unless otherwise indicated.