High-speed video analysis of arrow behaviour during the power stroke of a recurve archery bow
The manner in which an archer holds and releases the string of a recurve bow causes the arrow to flex during the bows power stroke and on its way from the bow to the target. While an experienced observer can subjectively evaluate an arrows pitch and yaw visually after it has left the bow, the arrows behaviour during the bows power stroke happens too quickly for visual observation. High-speed video is consequently a much more effective tool. Similarly, high-speed video is an effective tool for studying an archers technique during the bows power stroke.Mathematical models of the arrows behaviour in the horizontal plane during the bows power stroke have, to date, relied upon comparison of the arrows flexural shape with photographs. However, an implicit assumption of that process is that the archers technique is perfect. This paper provides an analysis of event times and the magnitudes of several key components of the arrow flex during the bows power stroke for sixteen world-class archers. Aside from being a powerful analysis tool in its own right, that data can also be used to evaluate mathematical models of arrow behaviour. It is concluded that archer technique variations could be a significant source of error where a single archer is used as a comparison for the mathematics, even if that single archer is amongst the worlds best.
© Copyright 2013 Proceedings of the Institution of Mechanical Engineers, Part P: Journal of Sports Engineering and Technology . Sage Publications. All rights reserved.
|Subjects:||archery video analysis sports equipment|
|Notations:||technical and natural sciences technical sports|
|Published in:||Proceedings of the Institution of Mechanical Engineers, Part P: Journal of Sports Engineering and Technology|