diumenge, 27 de desembre del 2015

Proprioception and knee.

Proprioception is the sense that informs the body of the position of the muscles, is the ability to sense the relative position of adjacent body parts. Proprioception regulates the direction and range of motion enables automatic reactions and responses involved in the development of body image and its relationship with space, supporting the planned motor action. Other functions in acting with more autonomy are control balance, coordination of both sides of the body, maintaining the alert level of the nervous system and influence on emotional development and behavior.

This definition comes from the Wikipedia article proprioception in Spanish. Introducing defined as karate affect the impact or damage to the mechanisms that inform the body position in space.
 
 
By extension all karate techniques performed, if they are applied with sufficient energy, timing and location, a perceptible decline in the opponent of his own conception of space. It is simpler words, it knocks him. There are parts of the body that are most likely to do this, for example the head, the position of the vestibular canals and innervation. But specifically in this article, we will see how knee affects their relationship with body balance.

The human knee has a variety of tendons, synovial chambers, and bones that make it particularly sensitive to sports injuries, including martial, and that makes a real target when attacking an opponent and leave unused.

To do this, karate is available, coded karate kata, a series of techniques that are listed below:

    Sanseru in kata (Goju-ryu and Shito-ryu), are performed in four directions kick call fumikomi-geri, specifically aimed at the knee.
    Also in Sanseru kata (Goju-ryu and Shito-ryu), particularly in the first kata techniques, with a twist blow to the knee area in order to rotate the leg and unbalance the opponent is done.
    In Bo kata become atemis or shock which are aimed at low or gedan, aimed at the knee or ankle failing opponent, which will cause his downfall injured or lack of mobility.

Why attack the opponent's knee?

The knee, like all the human body and especially the joints, has several elements that make it particularly sensitive to injury or attack:

    It has mechanoreceptors that act as transducers that inform the brain of the position of the muscles, tension and relaxation, in short conception of how the body is located in space.
 


 
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    Tendons are located on the same a number of important points, such as Stomach 34, Stomach 36, Liver 8 and acupuncture Gallbladder 34. All these points refer to the mobility of the knee to be located in or near tendons .


    It is highly innervated when passing packages nerves leading position signals other body part rich in mechanoreceptors, as the ankle, another objective Martial attacks made in Bo.



One is femoral nerve.
 
 
How to make a correct fumikomi-geri?

From my personal experience, after passing through the Shito-ryu style Goju-ryu, I can say that the process that created more correct would be:

    Start from an anatomically stable position as moto-dachi or sanchin-dachi. I do not advise the zenkutsu-dachi because it is too low.
    With arms on guard, we can raise the leg until the knee is the closest to waist level. Attacking the foot it must be turned into the body to properly taut.
    Lower leg, attacking foot (always tensioned reatrído inwardly protruding external heel area) to the knee, in the joint, on its inner or outer side. Failing that they can attack immediately lower calf areas. This process should be accompanied by a slight discharge from your body down in the moment of impact, perhaps most difficult to achieve. Caution: Do not tilt the trunk backward in carrying the tecnique because kinetic energy division that entails.
    Roll back leg to its elevated position with the knee at the same level as the waist.
    Lower the leg or reverse the playback to a safe position.
 

The effects are achieved by a vigorous application of a force of 20Kp with the leg, which added weight defender, cause the opponent's knee bend thereby damaging tendons and mechanoreceptors in addition to the joint force. This achieves that the opponent sees his conscience impaired balance or proprioception, falling down or being diminished balance.

An even stronger and violent application might break the tendons and cause the output of synovial fluid out of the capsules which enclose it for normal operation of the knee.

From this lecture I advise the responsible practice of martial arts without damaging the opponent and teammate and always respecting. Respect and love of neighbor should be, and are, more important than the proper execution of the techniques.

Bibliography:

Bunkai of sanseru.

Kata sanseru.

Propiocepction in robots.
http://labobotk.blogspot.com.es/2011/06/percepcion-de-un-robot.html