What should be included in the pre-season training for softball?

The goal of pre-season cardiovascular training for softball is to build a good aerobic base.  For some softball players it might also mean weight management.  To start the process for both building a base and weight loss you will need to build up the work capacity.  This is done by performing lower-intensity work, on cardio equipment if possible, to reduce the pounding on your joints.  Pre-season training is meant to prepare you for the season, so there is a fine line between preparing for the season and setting you up for burnout in the middle of the year.  Building the work capacity slowly is a safe way to ensure you are at peak at the right time during the season.  Once you can handle at least thirty minutes of low-intensity training it is time to increase your aerobic base by pushing your anaerobic threshold higher.  Softball is made up of a series of anaerobic bursts, so preparing to strengthen the anaerobic system is very important.  By the end of the pre-season, focus on anaerobic training by working on ball drills and base running as conditioning drills.