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Title: Quantifying elbow extension and elbow hyperextension in cricket bowling: a case study of Jenny Gunn
Authors: King, Mark A.
Yeadon, Maurice R.
Keywords: Cricket
Illegal bowling action
Issue Date: 2012
Publisher: © Taylor & Francis
Citation: KING, M.A. and YEADON, M.R., 2012. Quantifying elbow extension and elbow hyperextension in cricket bowling: a case study of Jenny Gunn. Journal of Sports Sciences, 30 (9), pp. 937 - 947.
Abstract: In this study a method for determining elbow extension and elbow abduction for a cricket bowling delivery was developed and assessed for Jenny Gunn who has hypermobility in both elbows and whose bowling action has been repeatedly queried by umpires. Bowling is a dynamic activity which is assessed visually in real time in a cricket match by an umpire. When the legality of a bowler's action is questioned by an umpire a quantitative analysis is undertaken using a marker based motion analysis system. This method of quantifying elbow extension should agree with a visual assessment of when the arm is "straight'' and should minimise the effects of marker movement. A set of six markers on the bowling arm were used to calculate elbow angles. Differences of up to 1 degrees for elbow extension and up to 2 degrees for elbow abduction were found when angles calculated from the marker set for static straight arm trials were compared with measurements taken by a chartered sports physiotherapist. In addition comparison of elbow extension angles at ball release calculated from the markers during bowling trials with those measured from high speed video also showed good agreement with mean differences of 0 degrees +/- 2 degrees.
Description: This article was published in the Journal of Sports Sciences [© Taylor & Francis]. The definitive version is available at: http://dx.doi.org/10.1080/02640414.2012.682082
Version: Accepted for publication
DOI: 10.1080/02640414.2012.682082
URI: https://dspace.lboro.ac.uk/2134/10018
Publisher Link: http://dx.doi.org/10.1080/02640414.2012.682082
ISSN: 0264-0414
Appears in Collections:Published Articles (Sport, Exercise and Health Sciences)

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