Secrets Of Judo - A Text For Instructors And Students

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Author: Jiichi Watanabe and Lindy Avakian
Pub: 1960 by Charles E. Tuttle Co.
Pages: 186
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One of the great secrets of Judo is why this book is still in print, while so many better books cannot be found anymore. This book attempts to explain Judo techniques in terms of physics. Momentum, friction, coefficients, composition of forces, and moment of force are some of the subjects you'll run into in this book. What you won't find, unfortunately, is any good Judo. I can't honestly recommend this book.


List of Illustrations                                                  9
Foreword                                                              13
1. The Art and Science of Judo                                        17
2. How Can Dynamics Be Applied to Judo?                               25
    Nervous system:                                                   26
        1. Sensory nerves:                                            27
        2. Motor nerves:                                              27
    Reaction time:                                                    28
        1. Reaction quickened by exercise:                            28
        2. Unconditioned reflex action:                               29
        3. Conditioned reflex action:                                 29
        4. Evaluation of the use of these three reactions in judo:    30
    Nine cases in which reaction time becomes longer:                 31
    The unguarded moment:                                             33

3. Three Principles for Practicing Judo                               35

     Break your opponent's posture before applying your throw:        35
         1. Stability of an object:                                   37
         2. Stability of a human body:                                40
         3. How to break the opponent's posture:                      42
     Take advantage of the waist and abdominal region:                47
         1. The force of the waist and abdominal region coordinates
            all parts of the body:                                    48
         2. The force of the waist and abdominal region benefits
             the nervous system:                                      50
         3. The force of the waist and abdominal region can be
             developed by training:                                   53
     Practice judo in a natural posture:                              55
         1. The natural posture is best for practicing judo:          56
         2. Grappling techniques require a different type of posture: 56

4. Three Laws of Motion                                               59
    First law of motion:                                              59
    Second law of motion:                                             60
    Third law of motion:                                              61

5. Kinds of Force                                                     65
    Muscular force:                                                   65
    Gravity:                                                          68
    Momentum:                                                         70
      1. Impulse:                                                     72
      2. Impulsive force:                                             73
      3. How to apply the strongest force possible on the opponent:   73
      4. The relation of momentum to the force of the arm:            75
    Friction.                                                         76
    Coeffient of friction:                                            77

6. Acting State of Force                                              81
    The principle of transmissibility of force:                       81
    Composition of forces:                                            82
    Decomposition of forces:                                          84
    The moment of force:                                              86
    The moment of a couple:                                           90

 7. How to Practice Throwing                                          93
     Some advice on throwing techniques:                              93
        1. Where to hold:                                             93
        2. How to grasp:                                              93
        3. How to advance or retreat:                                 94

 Ukemi: the art of falling:                                           95

 Explanation of throwing techniques:                                 100
   1. Uki-goshi (hip throw):                                         100
   2. Uki-otoshi (floating drop):                                    102
   3. 0-goshi (major hip throw):                                     104
   4. Tai-otoshi (body drop):                                        106
   5. Tsurikomi-goshi (lifting hip throw):                           108
   6. Harai-goshi (sweeping loin throw):                             110
   7. Hane-goshi (spring hip throw):                                 112
   8. Hiza-guruma (knee wheel):                                      114
   9. Harai-tsurikomi-ashi (lifting foot sweep):                     116
  10. De-ashi-harai (advanced foot sweep):                           118
  11. Okuri-ashi-harai (sweeping ankle throw):                       120
  12. 0-soto-gari (major external reaping):                          122
  13. 0-uchi-gari (major inner reaping):                             124
  14. Ko-uchi-gari (minor inner reaping):                            126
  15. Tomoe-nage (circle throw):                                     128
  16. Uki-waza (floating throw):                                     130

8. How to Practice Grappling                                         133
    Classification of grappling techniques:                          133
       1. Osaekomi-waza (holddowns):                                 133
       2. Shime-waza (strangles):                                    134
       3. Kansetsu-waza (elbow locks and twists):                    134
 The relation between grappling and throwing;                        135
 Attack methods in grappling:                                        136
      1. Force must precede speed and lightness of motion in     
          grappling:                                                 136
      2. First consider how to produce the largest momentum      
          possible and how to apply it effectively:                  137
      3. Immobilize the force of your opponent's lower          
          extremities:                                               139
  Defense. methods in grappling:                                     142
  Explanation of osaekomi-waza (holddowns):                          144
      1. Hon-kesa-gatame (side collar hold):                         144
      2. kuzure-kesa-gatame (modified side collar hold):             146
      3. Kata-gatame (single shoulder hold):                         148
      4. Kami-shiho-gatame (four-quarter hold):                      150
      5. Kami-shiho-gatame: a slight modification:                   152
      6. Kuzure-kami-shiho-gatame (modified four-quarter hold):      154
      7. Kuzure-kami-shiho-gatame: another modification:             156
      8. Yoko-shiho-gatame (side four-quarter hold):                 158
  Explanation of shime-waza (strangles):                             160
      1. Nami-juji-jime (normal cross strangle):                     160
      2. Kata-juji-jime (half cross strangle):                       162
      3. Kata-juji-jime (half cross strangle): a modification:       164
      4. Okuri-eri-jime (sliding.collar strangle):                   166
      5. Yoko-okuri-eri-jime (side sliding collar strangle):         168
      6. Kata-ha-jime (single wing strangle):                        170
      7. Hadaka-jime (bare-hand strangle):                           172
      8. Ryote-jime (two-hand strangle):                             174

  Explanation of kansetsu-waza (elbow locks and twists):             176
       1. Hiza-gatame (knee-elbow lock):                             176
       2. Juji-gatame (cross armlock):                               178
       3. Ude-garami (entangled armlock):                            180

 Index                                                               183



It is a great pleasure for me to know that The Secrets of Judo is to be published under the joint authorship of Jiichi Watanabe, sixth dan, and Lindy Avakian, third dan.

Mr. Watanabe has been deeply interested in the scientific study of the various techniques of judo, especially from the viewpoint of dynamics. Mr. Avakian came to the Kodokan from the United States and earnestly studied the principles and techniques of judo here in Japan. He is now in his native country, where he has become known as an expert teacher of judo.

The Kodokan judo was born from the old jujitsu of Japan. Now, having been reorganized from the viewpoint of physical education, it has become an excellent sport, much favored in many nations of the world.

I believe that this book of the two judomen will be welcomed as a good guide for foreign students.

Tokyo, October 10, 1959
Kodokan Judo Institute


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