The introduction of plyometrics into a training program can be a valuable addition to help achieve the training objectives. When applied improperly, however, plyometrics can be detrimental to the desired results.

Plyometrics are motions whereby an eccentric (lengthening of the muscle) contraction is followed by an explosive, concentric one (muscle shortening). The eccentric contraction is typically applied under a force. Examples of plyometric eccentric motions would be jumping off a box or catching a falling medicine ball while lying on your back.

The plyometric action (eccentric loading, change of direction, explosive concentric movement) is a ballistic one, meaning that greater forces are applied to the muscles, tendons and joints than what is typically seen during more conventional training movements. For this reason, the manner, duration and frequency of plyometric training activities should be carefully periodized for maximum results.

Kratos trainers will introduce plyometric movements into the athletes training regime based on a variety of factors such as athletic ability, training intensity and proximity to the start of the season, among others.


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