|
There is this disclaimer smack in the middle of the Kettering study link:
[COLOR="Red"]Disclaimer: While the results were not published in peer-reviewed research journals until 2000-2001, the data for the Crisco-Greenwald batting cage study was collected during 1997-1998. The bats used in this study were manufactured before the NCAA implemented its current performance limits which restrict the performance of an aluminum bat through (i) the "minus-3" Length-weight rule, (ii) the BESR test (ball exit speed ratio), and (iii) the lower limit on moment-of-inertia. Thus, the bats used in this study are not representative of aluminum bats allowed for use at high school and college levels under current NCAA rules. None of the 5 aluminum bats in this study would be legal today. The batted-ball speeds measured in the Crisco-Greenwald study are significantly higher than batted-ball speeds obainted with bats which currently pass the NCAA performance standards. The data from the Crisco-Greenwald study should NOT be used to argue against the use of aluminum bats because this data does not represent the status of bat performance under current NCAA rules. No bat which currently passes the NCAA performance standards will perform as high as the best metal bats in the Crisco-Greenwald study.[/COLOR]
|