and the fingers as it is pushed forward because the fingers are used to affect the angle and magnitude of spin as will be discussed in detail below the pressures applied to the fingers during the release will be greater than during the backswing the data provided in such a comparison graph provides useful information to a bowler or a coach for example at the first peak 415 the pressures detected on all three fingers are fairly consistent between shot 1 and shot 2 the amplitudes and rate of change are similar however at the second peak 417 the maximum pressure exerted by the thumb 150 is greater in the data from shot 2 than it is in the data from shot 1 furthermore the pressure detected on the third finger 130 at the second peak 417 increases more quickly in shot 2 than it does in shot 1 also there is a distinct second spike in pressure detected at each finger during the release of shot 1 at the second peak 417 as discussed previously these double spikes could indicate that the bowler has grabbed the ball during her release these dual pressure spikes affect the movement of the ball during the release and therefore affect the performance of the ball after the release the performance inconsistencies of the bowler demonstrated in fig4 can be used to determine several different things depending upon the situation in which it arises for example a coach has directed his student to throw the same straight bowling shot twice and records the pressure data displayed in fig4 from the data sets of shot 1 the coach determines that the bowler 39 s release should be modified the dual pressure spikes from each finger at peak 417 indicate that the bowler.