An exponent of 0.3 was used in the swing - speed model .
An exponent of 0.3 was can range from 0.08 to 0.37 based upon a swing - speed study of softball players performed by Smith ( 14 ) .
An exponent of 0.3 was used in the swing - speed model but can range from 0.08 to 0.37 based upon a swing - speed study of softball players performed by Smith ( 14 ) .