THE KINETIC AND KINEMATIC VARIABLES OF A LATERAL DIVE OF CRICKET FIELDERS
University of Wales Institute Cardiff
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The aim of this study was to investigate the kinematic and kinetic variables of lateral dives to dominant and non-dominant sides by a cricket fielder in an attempt to catch a thrown ball. Also to identify different techniques used by cricketers to achieve the movement and assess the effectiveness of each. Subjects (n = 6) were required to intercept a ball throw twice to their left side and twice to their right, diving from a standing position. This movement was analysed using automated motion analysis systems to quantify the variables. It was found that there were significant differences between the angles at initiation of movement both between participants (P=0.000) and within participants (P=0.000) and at take-off between participants (P=0.006) and within participants (P=0.000). Kinematic analysis showed that vertical (P = 0.014) peak force production was significantly greater and horizontal (P = 0.023) peak force production was significantly lower when participants moved to the right side compared to their left. Initiation of movement to ball contact time was found to be significantly different between participants (P = 0.000), leading to the participants being divided into two groups based on this. Trigger movement length was found to be significantly different between participants when they were compared as a full sample (P = 0.003) and when divided into the two groups, the difference in trigger movement length was significant between the two groups (P = 0.000). The trigger movement was found to have correlation with the initiation of movement to ball contact time (r2 = 0.51). From this finding it was recommended that the ready position of a fielder should display slight external rotation of the hips, to ease lateral movement and reduce the requirement for a trigger movement prior to diving to intercept the cricket ball.
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