[Truncated abstract] Cricket fast bowling, a highly complex and dynamic skill, is considered an integral part of the game. A combination of factors can contribute to the effectiveness of a fast bowler; however the key that determines success for many bowlers is the final ball release velocity. Understanding what mechanisms underlie the development of ball velocity has immense implications not only for cricket, but other sports that involve overhand throwing movements. The relative contributions of body segments to ball release velocity has received some exposure in the literature, while the coverage of other influences such as anthropometry and body segment sequencing have been limited. A new area of research is the study of joint kinetics and how the development of joint moments and powers influence kinematics and ball release velocity. Additionally, the literature to date has used linear statistics to assess associations between mechanical variables and ball release velocity, relationships that are inherently non-linear. While this approach has been used in early papers in this thesis, the forward kinematic modelling method of Chapter 8 employs a non-linear approach to better understand the development of ball velocity. Therefore the aim of this thesis was to improve the understanding of the anthropometrical, kinematic and kinetic influences on ball release velocity in cricket fast bowlers. The use of inverse dynamics to approximate joint moments has been successfully applied to many overhand activities. However, while the International Society of Biomechanics has recently outlined standards in the calculation and reporting of upper limb joint kinematics, historically it has been the prerogative of individual researchers to determine how best joint kinetics should be calculated and expressed. This may include using an orthogonal axis coordinate system located in either the distal or less commonly proximal segment, of the joint that is being analysed.
|Qualification||Doctor of Philosophy|
|Publication status||Unpublished - 2011|