Nakayubi ipponken (中指一本拳)

Introduction

Nakayubi ipponken (中指一本拳) is a fist form in which the projecting second joint of the middle finger forms the striking surface. It is used in the same basic way as Hitosashiyubi ipponken, in thrusts and downward strikes.

Definition

The second joint of the middle finger projects forward as the concentrated contact point.

Terminology

Japanese: 中指一本拳
Romaji: nakayubi ipponken
English: middle-finger one-knuckle fist

Structure / Form

• close the hand into a compact fist with the back of the hand upward
• project the second joint of the middle finger
• press the thumb firmly against the area between the first and second joints of the index finger to lock the form
• keep wrist and forearm aligned

Striking surface

Primary: projecting second joint of the middle finger.
Avoid the other knuckles, fingers and palm.

Basic principles

Keep the fist compact, the contact point supported and the wrist aligned. Transfer force through the whole body and apply kime at impact.

Execution and use

Move on a controlled line, contact with the projecting middle-finger joint and retract immediately. The form is used in thrusts and downward strikes.

Training

Use kihon, controlled repetitions and precision training. Focus on the correct joint, thumb support, straight wrist and stable structure.

Common errors

• wrong knuckle as contact point
• incorrect thumb position
• unstable hand structure
• bent wrist

Summary

Nakayubi ipponken concentrates force through the projecting second joint of the middle finger in a compact, supported fist.