Jump training, also known as plyometric/speed/muscular endurance training, is geared toward athletes looking to increase their vertical, speed, power, balance, and agility, as well as reduce injury onset.
It designed to have athletes working a variety of movements (including jumping, sprinting, and agility) in multiple planes and have their muscles exert maximum force in short intervals.
It is great for all sports, but it is especially important for athletes looking to increase their vertical, such as in volleyball, basketball, and track.
It is also an effective method to reduce the incidence of sports injuries, including the most common type which takes place during a deceleration task (such as a rapid change of direction or when trying to stop instantly).