Less than 2 seconds of recovery time in exercise of 12 to 20 minutes makes a workout aerobic. Exercise for both strength and endurance is usually achieved through circuit training, where the athlete continues from one exercise to another without stopping between sets.
The preparation (off-season) cycle for a plyometric program should involve general gross motor exercise, such as skipping for coordination or simple jumping, without specific skill training, like change of direction. As the preseason cycle approaches, exercises should become more specific to the sport.