Reader reference

APPLIED UKEMI Glossary

Look up the Japanese terms, techniques, and core ideas used throughout the book, with a reference back to the relevant chapter or appendix.

Definitions support reading and review. They do not replace the book’s safety guidance, qualified supervision, or medical advice.

Protective technique

Angel Wings

Guided practice

The broad arm position used in a back landing to increase the body's contact area and help distribute force.

In the book: The Protection Pathway

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Practice concept

Armor

The strength, muscle, and physical reserve that support balance, protect joints, and help the body tolerate force.

In the book: Armor

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Protective technique

Breakfall

Guided practice

A trained landing that organizes the body to protect the head and distribute impact rather than concentrating it in one vulnerable point.

In the book: The Sudden Stop; What Is Ukemi

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Protective technique

Controlled Descent

Guided practice

The third level of the Protection Pathway, where the body begins learning the route from an upright position toward a protected finish.

In the book: The Protection Pathway

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Protective technique

Crash Pad

Guided practice

The fourth Protection Pathway level, using appropriate cushioning to introduce consequence gradually before progressing to a mat.

In the book: The Protection Pathway

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Japanese term

Dojo道場

The training hall—the place of practice.

In the book: Appendix B: The Japanese Concepts

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Protective technique

Finish Position

The organized landing shape learned first in the Protection Pathway. It is also called Home Base and prioritizes keeping the head protected.

In the book: The Protection Pathway: Home Base

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Practice concept

Force Division

Sharing impact across time and multiple suitable contact surfaces instead of allowing force to concentrate in one joint or bone.

In the book: The Sudden Stop; What Is Ukemi

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Protective technique

Head Protection

The non-negotiable priority in APPLIED UKEMI: organizing the body so the head does not meet the ground unprotected.

In the book: The Sudden Stop; The Protection Pathway

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Japanese term

Jita Kyoei自他共栄

Mutual benefit for all—one of Kano Jigoro's founding principles of Judo.

In the book: Jita Kyoei; Appendix B

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Japanese term

Kamae構え

Stance, position, or ready posture. In the book, Kamae introduces each chapter's central concept.

In the book: Concept section of each chapter; Appendix B

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Japanese term

Kame no Kuzushi亀の崩し

Turtle stability and the breaking of balance—a framework for stance, awareness, and recognizing when the body moves off balance.

In the book: Kame no Kuzushi; Appendix B

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Japanese term

Kano Jigoro嘉納 治五郎

Founder of Kodokan Judo in 1882 and creator of ukemi as a training system.

In the book: What Is Ukemi; Appendix B

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Japanese term

Kodokan講道館

The school founded by Kano Jigoro in Tokyo in 1882.

In the book: What Is Ukemi; Appendix B

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Practice concept

Protection Pathway

A five-level progression: Finish Position, Slap Mechanics, Controlled Descent, Crash Pad, and Mat. Each level builds on the one before it.

In the book: The Protection Pathway

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Japanese term

Randori乱取り

Free practice or live training. In APPLIED UKEMI, Randori labels the real-life training tales.

In the book: Training tale section of each chapter; Appendix B

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Recovery

Recovery

The process after a fall: pause, assess from head to toe, evaluate the surroundings, and only then choose whether and how to move or seek help.

In the book: Recovery guidance; Appendix C

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Japanese term

Seiryoku Zenyo精力善用

Maximum efficiency with minimum effort—Kano's second founding principle.

In the book: Appendix B: The Japanese Concepts

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Japanese term

Shu Ha Ri守破離

Follow, break, transcend—the three stages of skill learning.

In the book: Appendix B: The Japanese Concepts

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Protective technique

Slap Mechanics

Guided practice

The second Protection Pathway level. A deliberate, broad forearm contact helps divide force; it is not a reach with a locked hand or wrist.

In the book: The Sudden Stop; The Protection Pathway

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Practice concept

Slowering

The deliberate, controlled lowering of the body's center of mass in response to instability—slowing and lowering at the same time.

In the book: Slowering

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Practice concept

Surface Area

Using broader, appropriate landing surfaces so impact is distributed rather than concentrated at one fragile point.

In the book: The Sudden Stop; What Is Ukemi

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Japanese term

Tataku叩く

Guided practice

To strike or beat—the deliberate slap that divides force in a breakfall.

In the book: The Sudden Stop; Appendix B

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Japanese term

Ukemi受身

The art of receiving a fall safely, the first skill taught in Judo and the central subject of APPLIED UKEMI.

In the book: What Is Ukemi; Appendix B

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Protective technique

U-Stance

The protective arm position used when a loss of balance is clearly forward, with the hands creating a protective frame around the head.

In the book: Kame no Kuzushi

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Japanese term

Waza技

Technique or skill. In the book, Waza introduces research and evidence connected to each chapter.

In the book: Research section of each chapter; Appendix B

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Practice concept

White Belt Mentality

Approaching continued practice with humility, curiosity, consistency, and a willingness to keep learning from the beginning.

In the book: White Belt Mentality

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Protective technique

X-Stance

The protective arm position for backward, sideways, rotational, or uncertain loss of balance—anything not clearly forward.

In the book: Kame no Kuzushi

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