Authors: Salter, Craig W.¹; Sinclair, Peter J.²; Portus, Marc R.³

Source: Journal of Sports Sciences, Volume 25, Number 11, September 2007 , pp. 1279-1285(7)

Publisher: Taylor and Francis Ltd

Abstract:

The inability of the between-bowlers methodology to control parameters external to technique could lead to erroneous significant and non-significant associations being reported between fast-bowling technique and ball release speed. Using Pearson's product - moment correlation, we first examined the effectiveness of a within-bowler methodology to identify associations between technique and ball release speed of an elite semi-open fast bowler over 20 deliveries. These results were compared with associations identified from a between-bowlers methodology in which 20 single-performance trials bowled by elite fast bowlers adopting a semi-open shoulder alignment were collated. Sufficient variation was observed in within-bowler ball release speed to allow f relationships to be identified between technique and ball release speed. Although greater variation in bowling technique parameters was observed in the between-bowlers methodology, no associations were identified between technique and ball release speed. Multiple stepwise regression analysis showed that 87.5% of the within-bowler variation in ball release speed can be attributed to run-up velocity, angular velocity of the bowling arm, vertical velocity of the non-bowling arm, and stride length. The within-bowler methodology provided significant detailed information about the individual bowler that the between-bowlers methodology overlooked, forming the basis of a performance enhancement programme. It is recommended that within-bowler methodology be used in future investigation of technique relationships.

Keywords: Biomechanics, cricket, fast-bowling, kinematics, m

Document Type: Research article

DOI: http://dx.doi.org/10.1080/02640410601096822

Affiliations: 1: School of Exercise and Sports Science, The University of Sydney, Lidcombe, NSW,Biomechanics Department, Australian Institute of Sport, Bruce, ACT, Australia 2: School of Exercise and Sports Science, The University of Sydney, Lidcombe, NSW 3: Biomechanics Department, Australian Institute of Sport, Bruce, ACT, Australia

Publication date: 2007-09-01

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