Skip to content

Striking Surfaces (Atari-bu)

Introduction

In Kyokushin karate, the body is used through clearly defined striking surfaces and contact points.

These can be summarized as atari-bu (当たり部), that is, the parts of the body used to transmit contact in technique (waza, 技).

In this section, the striking surfaces are treated as technical forms: what they look like, where contact occurs, and how they are used.


Definition

Atari-bu (当たり部)
The part of the body used as a striking surface or contact point in technique.

Each atari-bu is characterized by:

  • a clearly defined surface
  • a specific structure or form
  • a function in technique

Basic principle

Effective technique is based on the relationship between:

  • body
  • structure
  • striking surface
  • technique

The striking surface is the point where contact is concentrated.


Main sections

Hand and arm

This part covers the striking surfaces of the hand and arm, hand forms, and contact zones.

This includes, among others:

  • seiken (正拳)
  • uraken (裏拳)
  • tettsui (鉄槌)
  • shutō (手刀)
  • haitō (背刀)
  • shōtei (掌底)
  • nukite (貫手)
  • keiko (鶏口)
  • koken (弧拳)
  • hitosashiyubi ipponken (人差し指一本拳)
  • nakayubi ipponken (中指一本拳)
  • nihonken (二本拳)
  • ryūtōken (龍頭拳)
  • hiji (肘)
  • kote (小手)

Foot and leg

This part covers the striking surfaces of the foot and leg, as well as important contact and blocking surfaces.

This includes, among others:

  • chūsoku (中足)
  • sokutō (足刀)
  • haisoku (背足)
  • kakato (踵)
  • hiza (膝)
  • sune (脛)
  • teisoku (底足)

Delimitation

The section covers:

  • striking surfaces
  • contact points
  • their structure
  • their function in technique

It does not primarily cover:

  • complete techniques
  • kata
  • kumite as a whole
  • vital points

Purpose

The section serves as a reference for:

  • kihon
  • kata
  • kumite
  • instruction
  • technical analysis

The purpose is to clarify which part of the body is used, how it is formed, and how it functions in technique.


Summary

Correct use of atari-bu is fundamental to technical precision.

Without a correct striking surface or contact point, the technique loses clarity, structure, and function.