As with all length classes of bats , the inertial properties were not held constant when comparing to first bending frequency to batted - ball performance , and .
There can be secondary effects that are not isolated in this interpretation of the data .
As with all length classes of bats , the inertial properties were not held constant when comparing to first bending frequency to batted - ball performance , and hence there can be secondary effects that are not isolated in this interpretation of the data .