Plyometrics are a form of explosive exercises that creates what called a Stretch Reflex in the muscle. The muscle goes from an eccentric action to a concentric action quickly. The nervous system is highly excitable during this action. The goal is to improve how quickly an athlete can apply force to the ground or another object and move either the body, as in sprinting or jumping, or a ball or implement, as in throwing or hitting.
With youths and beginners, the variables of maturation and experience compound the problem of determining when and how to begin a plyometric training program. Even thought the actual purpose of plyometric training or shock training, as it is originally referred to, was initially intended to be done at higher intensities, it can and should be modified so that even the pre-adolescent athlete can participate in activities that require quick jumping. Examples of these would be jump rope, hop scotch, and Ladder drills. It is important to understand that the athlete must have a solid strength foundation in order to advance into more intense plyometrics. But even youngsters can participate in lower level plyometrics A maximum squat of 11⁄2-2 times body weight has been recommended by some Eastern Bloc authorities as a prerequisite for plyometric training. This goes along with traditional training patterns which normally follow the sequence of maximal force development preceding speed or plyometric training in the yearly cycle.
However, Eastern Bloc literature concerning youth strength training utilizes various forms of “bouncing” activities starting as young as 7-8 years. A squat of 11/2- 2 times a child’s body weight as a prerequisite for such training is highly questionable and was probably never intended for such a population. Maximum strength activities are not recommended for pre-pubescent or pubescent athletes, yet plyometric activities can be utilized throughout childhood. The key to all of this is proper training loads, dependent upon age and stage of biological development Even among mature athletes, a minimum strength level necessary to begin a plyometric program has been questioned. This is not to say that maximum strength training is not necessary, for it occupies a very important part of power development. Plyometric training should be taught using very basic drills and gradually progress to a more advanced level that is suited and needed for the particular athlete or group of athletes.
Prior to beginning any plyometric program the coach should instruct all athletes on the proper techniques of landing and jumping. Even though, during plyometric exercises there isn’t much time spent on the ground, Landing is the most important aspect of keeping the athletes safe. The following drills are all simple to learn and teach and allow athletes of any age athlete to learn coordination while improving upon the foundation of plyometric training.
Line Drills
Ladder Drills
Low Box Drills
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