"Plyometrics is a type of exercise training designed to produce fast, powerful movements, and improve the functions of the nervous system, generally for the purpose of improving performance in a specific sport. Plyometric movements, in which a muscle is loaded and then contracted in rapid sequence, use the strength, elasticity and innervation of muscle and as it was supposed to be surrounding tissues to jump higher, run faster, throw farther, or hit harder, depending on the desired training goal. Plyometrics is used to increase the speed or force of muscular contractions, often with the goal of increasing the height of a jump or the speed of a punch or throw" direct from
www.wikipedia.org
Finally, recognition of the nervous system and the need to train that system. The only thing I want to add is that plyometrics is not the only way to train the nervous system. Check out our Ballistic Ball Workout---and the way we teach Aquatics. Both these routines stimulate and challenge the nervous system, as does every exercise at Sport Science LAb.
"Plyometric training involves practicing plyometric movements to toughen tissues and train nerve cells to stimulate a specific pattern of muscle contraction so the muscle generates as strong a contraction as possible in the shortest amount of time. A plyometric contraction involves first a rapid muscle lengthening movement, followed by a short resting phase, then an explosive muscle shortening movement, which enables the muscles that work together in doing the particular motion. Plyometric training engages the myostatic-reflex, which is the automatic contraction of muscle when their stretch nerve receptors are stimulated.
Plyometric exercises use explosive movements to develop muscular power, the ability to generate a large amount of force quickly. Plyometric training acts on the nerves, muscles, and tendons to increase an athlete's power output without necessarily increasing their maximum strength" direct from wikipedia.
I must caution here. Plyometrics is very popular right now. But plyometrics such as box jumping should not be used too often, and for not too many repetitions. Stay tuned for our DVD on plyometrics & box jumping, coming in the next month.
"Muscular power is determined by how long it takes for strength to be converted into speed. The ability to convert strength to speed in a very short time allows for athletic movements beyond what raw strength will allow. Thus an athlete who has strong legs and can perform the freeweight squat with extremely heavy weights over a long duration may get less distance on a standing long jump or height on a vertical leap than a weaker athlete who is able to generate a smaller amount of force but in a shorter amount of time. The plyometrically trained athlete may have a lower maximal force output, and thus may not squat as much, but his training allows him to shorten the amount of time required to reach his maximum force output, leading to more power from each contraction", again from wikipedia.
So, they are saying what we've been saying for over 10 years. The person who is the strongest, the person who can lift the most weight is not the fastest, quickest, best athlete.