| ||
| ||
|
Martial Arts Information | |
|
|
Learning the Modern Dynamics of Judo
You may have the erroneous idea that force is not necessary in judo, especially when you see a sixty-year-old instructor throwing many young- and strong men seemingly without effort. Dynamics, however, denies this illusion. A body begins to move only when an external force works on it, as will be explained later. A human body is a physical entity. Therefore, if you want to break your opponent's posture and make him fall down or hold him down on the mat;, you must apply the proper force to him. Newton's "three laws of motion" can be considered the foundation of modern dynamics. As a human body is a physical solid, its motion must be studied under these laws. Therefore a complete understanding of these law.-; may- well be the first step toward learning- the dynamics of judo. First law of motion What is force? A conception of it can be derived from the first law of motion. Newton states that a body at rest remains eternally at rest, and a body in motion remains eternally in uniform motion unless acted upon by an external force. When we push a book that rests upon a desk or stop a ball in motion with our hands, we receive resistance from these objects. This resistance is called inertia. Therefore, to give motion to a body at rest or to stop a body in motion, we must overcome the inertia of that body. We may define force as an action to overcome the inertia of a body. According to the first law of motion, a rolling ball would continue eternally in motion after it had once been put in motion. Therefore, if we were to throw a ball at the moon, the ball would continue its flight until it reached the moon. In reality the ball eventually falls to earth. The reason for this is that the attraction of the earth's gravity acts on all objects in the same manner. How can we apply this law to judo? We know that if an opponent at rest makes a motion it is the result of an external force-that is, of something already independent and separated from his will-even if originally produced by his own will. Therefore you can exploit the force of your opponent if you have a good understanding of the nature of force. For instance, assume that your opponent moves to his left with the object of making you lean to your right front corner. Suppose that the force with which he moves is equal to five units and that you can throw him in the same direction by adding a force of five units to his five. Then the total force of ten units will throw him easily, even if he tries to resist. To keep from being thrown, he must exert additional force against the force of ten units that is being placed on his body. We know that there is a force that can be exploited whenever the opponent makes a motion. Second law of motion Newton states in the second law of motion that when a force acts on a mass, the mass acquires a certain acceleration proportional to, and in the direction of, the force acting on it and that the acceleration is inverse to the magnitude of the mass. The law can be easily understood by means of the following experiment. Suppose that there are two balls placed on the floor. One is made of iron and the other of wood. Now let us roll the balls simultaneously by applying two forces equal in magnitude and direction. The wooden ball goes farther than the iron ball because its velocity is greater. Try the experiment again, this time exerting a larger force than before. The wooden ball will roll proportionately farther and faster. Now let us see how this law works in judo. You know that if you exert a force on your opponent and that if his body weight is less than yours, you will be able to make him move or fall with comparative ease. On the other hand, if he is heavier than you, you will have more difficulty in moving him and breaking his posture. If you throw him with a larger force, he will fall faster to the mat. If he strikes his body against yours to push you down backward, the larger his body, the more difficult it becomes for you to stop his body's movement before he applies his throw. These phenomena are all due to the second law of motion. It is this law that shows us why a large man has an advantage over a small man in competition. Third law of motion The third law of motion is called the law of reaction. The law states that to every motion there is a reaction. We find numerous examples of this in our daily experience. If a man in a rowboat pushes another rowboat, the pushed boat moves in the direction of the force applied, while the pushing boat simultaneously makes a corresponding motion in the reverse direction. Again, if a man in a boat pushes the shore with a pole, his boat gets clear of the shore. If a person standing in a natural posture before a pillar pushes it with his hand, he will tend to fall backward. This is due to the force of reaction that the pillar exerts against his force. The third law of motion-the law of reaction-proves that a dynamically produced force is more important than the force of the muscles in breaking the posture of the opponent and making him fall as the result of a fast and powerful movement of your body. In grappling, why is it difficult for your opponent to get up when he is turned over on his back? It is because he has nothing to push against effectively with either of his feet. Consequently, he can use only the force of his arms and shoulders, but this is not enough to make all parts of his body cooperate. Visit: If you are beginner interested to know more about Judo, visit http://www.realniches.com/archives/2005/06/introduction-to-judo.html To learn more about all the secrets & tips realted to Judo, pls visit http://www.realniches.com/archives/category/judo/ ** Attention Webmasters / Website Owners **
MORE RESOURCES:
Martial-Arts - Google News |
|
|
|
RELATED ARTICLES
Fun Games for Children Training in Martial Arts Keeping children interested in their Martial Arts training requires an element of fun and games. Traditionalists are usually only concerned with the discipline and structure of their training, but incorporating fun games involving proper techniques will add to the value of training and keep the kids interested. Interesting Facts on Samurai Sword Manufacture A samurai's sword is his most sacred and prized possession. Not only did the samurai rely on his sword to defend him, but spiritually the sword held greater significance as the samurai actually believed his soul inhabited the sword. How To Defend Against A Knife - Dont Use The Stuff Taught In The Dojo! Defences against Knife attacks, Firstly if at all possible get yourself and anyone else out of the potential danger area.. The Economics of Self Defense The following is a recent email I received; I thought I should respond to the list rather than to the individual because this situation is common:"I'm a 52 year old guy who has been pretty active lifting weights for about 20 years but about a year ago I found myself in a situation where a guy suckered me and I friggin was so intimidated that I walked away with my tail between my legs. Thankfully the only damage was to my ego cause I totally wimped out in front of my buddies who were there. I Know Karate and Kung Fu and Lots of Other Foreign Words! Martial arts have become incredibly popular in the US. Drive through any little strip shopping center in nearly any city and you're likely to see a martial arts studio. The Test "Will this work so that I can use it instinctively in vital combat against an opponent who is determined to prevent me from doing so, and who is striving to eliminate me by fair means or foul". ~ Rex ApplegateIt really does NOT matter one iota what style, system, method, or technique you MAY wish to apply to your personal survival training. By-Rote Combinations Do not believe that practicing "by rote" 1-2-3,etc. type "responses" to street attacks is a viable or particularly useful training exercise. Samurai Sword Basics, A Brief History Capturing the spirit of old Japan and recognised by its deadly curvature, the samurai sword is widely recognised throughout the world as the most deadly of all Japanese weaponry. Although gaining modern fame and notoriety in modern epic cinema in such films as The Last Samurai and the Kill Bill series by Quentin Tarantino, samurai swords have long being an iconic symbol of Japan and its history. Choosing a Self Defense / Martial Arts School: A Parents Guide "Daddy, I want to take Karate!""Mommy, Jimmy on the bus hit me again today"There are many reasons why parents want to sign their children up for Self Defense or Martial Arts classes. Once you have made the decision, now you are faced with many different options and questions. How to Relax During a Fight I received a returned video from a well meaning, but severely misguided, former customer. This is a rarity since over the past 2 plus years and hundreds upon hundreds of videos shipped; I can only count 3 returns. Martial Arts Strength Training According to various sources on the internet, a 1996 article in Iron Man Magazine revealed Bruce Lee's workout. In addition to his cardio and karate workouts, Lee lifted weights three times a week and performed the following routine:clean and presses 2 x 8squats 2 x 12barbell pullovers 2 x 8bench presses 2 x 6good mornings 2 x 8barbell curls 2 x 8Unfortunately, he injured his back doing good mornings, which nearly ruined his career. The Shocking Truth About Stun Guns If you are outside the world of law enforcement, chances are you haven't had much "hands on" work with stun guns. Stun guns are as popular today as they have ever been and with the newer smaller packages like cell phone/stun guns, their popularity continues to grow. Are You Frustrated Yet? I was talking to a parent recently and they told me that their son was not going to compete in wrestling because they were afraid they would get frustrated when he lost. The parent felt the child was far too sensitive to handle the frustration of failure and may get 'burnt out'. Real Life Self-Defense Starts From... "Nicky Bats" was an "old school" kinda guy. He was "street" thru and thru. Expect the Unexpected Grass Hopper The Myth perpetuated by Self Defense Oriented Martial ArtsI just received the following Email. I felt it needed to be shared because I feel a lot of people feel the same way?"Hello Damian,I ran across your website searching for what was out there for self defense information and have found myself researching your and Mr. Have No Misconceptions I just received an Email from a woman who has a child (3 year old) and about to have another. Considering my wife is in a similar situation, this question couldn't be more relevant. How to Select Your Martial Arts and Self Defense Equipment The most common place to buy martial arts or self defense equipment is in the local dojo. Most dojos, training centers, etc. Why Every Cop Should Study Judo Part 1 Up until 30 years ago, JUDO was the martial art. Then with the introduction of the more mysterious martial arts with more of a "killing" edge to them this coupled with the focus of the USJF/USJI (the leading Judo organizations in the US and the world) focus on Olympic competition and the simple fact that training in judo is painful and to this day, very difficult to get a black belt rank in it, especially if you are in a competitive area. A Few Things Everyone Should Know to Keep Themselves Safe The following are a few thoughts about how to decrease your chances of being a victim of a violent crime. I know a lot of times we focus on the nuts and bolts of a fight and we assume most of us know these things and this information is common knowledge for some of you, but it some times it's always good to review. Nuts & Bolts of Self Defense Fundamental "Nuts & Bolts" training for close combat should be directed at dealing with the extremes. That is a life and death struggle for survival, i.
|
| home | site map |
| © 2006 |