The Poised Form - Seiza

静と動の構え

Stillness and Movement

The Anthology of the Poised Form

姿勢・環境・構え – Posture, Environment, and Readiness

Before technique, there is posture.

Before posture, there is appearance.

Before appearance, there is discipline.

And discipline begins with how you wear the art.

序章 – Introduction

In Japanese martial traditions, posture is not simply a way of sitting or standing. Posture reflects awareness, readiness, etiquette, and environment. A practitioner does not sit the same way in every situation, because the situation itself determines the correct posture.

Some positions belong to formal indoor settings.

Some belong to informal situations.

Some belong to combat.

Some belong to armour.

Some belong to training.

To understand posture is to understand context.

The old traditions did not teach one posture.

They taught when to use each posture.

内と外 – Indoors and Outdoors

Historically, behaviour indoors and outdoors was different, and posture reflected this difference.

Environment

Posture

Weapon

Formal indoor

正座 (Seiza)

脇差 (Wakizashi)

Informal indoor

胡坐 (Agura) / 立膝 (Tatehiza)

脇差 / 刀 nearby

Indoor ready

立膝 (Tatehiza) / 跪坐 (Kiza)

刀 (Katana)

Confined indoor

居合腰 (Iaigoshi)

刀

Armour

蹲踞 (Sonkyo)

太刀 (Tachi) / 刀

Outdoors

Standing

Sword worn

Combat

Low crouch

Sword drawn

Historical Safety Note

The exact rules regarding which weapons could be worn indoors varied depending on period, location, and rank, but it is well established that indoor etiquette often required the long sword to be removed, while shorter or less conspicuous weapons might still be carried.

Indoors required:

Quiet movement

Controlled posture

Awareness in confined space

Outdoors required:

Mobility

Stability on uneven ground

Larger movement

Readiness for combat

The environment changes the posture.

The posture changes the movement.

The movement changes the technique.

正座の発展 – The Development of Seiza

The posture now known as 正座 (Seiza) has older roots, but it became standardized and formalized during the Muromachi period (1336–1573) and especially the Edo period (1603–1868) as part of formal indoor etiquette and samurai culture.

Earlier sitting positions included:

胡坐 (Agura) – Cross-legged sitting

立膝 (Tatehiza) – One knee raised

Various kneeling positions depending on clothing and situation

By the Edo period, seiza became the standard formal posture indoors, and many seated martial forms reflect this formal indoor culture.

However, seiza is also a training posture used to teach:

Posture

Balance

Sayabiki

Controlled drawing

Awareness

Discipline

Seiza is not only a historical posture.

It is also a training posture.

基本の姿勢 – The Main Postures

胡坐 – Agura – Informal Sitting

Cross-legged sitting used in informal situations such as observation, conversation, or rest. Even in informal sitting, the back remains upright and composed.

Represents: Informal stillness.

正座 – Seiza – Formal Sitting

Formal kneeling posture used for etiquette, ceremony, and many modern kata.

Represents: Formal stillness.

跪坐 – Kiza – Ready Kneeling

Kneeling on the toes rather than sitting fully on the heels. Allows quick standing and movement.

Represents: Stillness ready to become movement.

立膝 – Tatehiza – Raised Knee Posture

One knee raised, one leg folded beneath. More mobile than seiza and practical when wearing a long sword.

Represents: Seated readiness.

居合腰 – Iaigoshi – Low Ready Posture

Low crouching posture used for immediate movement, drawing, and rising. Practical in confined spaces and combative situations.

Represents: Movement about to begin.

蹲踞 – Sonkyo – Crouching Posture

Low crouch preserved in kendo. Stable, balanced, and mobile.

Represents: Balance between stillness and movement.

補助姿勢 – Secondary Postures

半座 – Hanza – Half-Seated Posture

A transitional posture between kneeling and standing used in some traditions.

不動座 – Fudōza – The Immovable Seat

A formal cross-legged posture associated with composure and an immovable mind (不動心 – Fudōshin).

These postures emphasize presence, composure, and stillness rather than immediate movement.

鎧と姿勢 – Armour and Posture

Armour changes posture completely.

When wearing armour:

Movement is restricted

The armour is heavy

Standing quickly is important

Deep seated positions are impractical

More suitable positions include:

Low crouch

One knee kneeling

Half crouch

Standing ready

Sonkyo

Armour favours mobility and stability over formality.

室内の武器 – Weapons Indoors

Indoors, shorter or less conspicuous weapons were more practical.

Common indoor weapons included:

Weapon

Japanese

Description

Wakizashi

脇差

Companion sword worn indoors

Tantō

短刀

Short blade for close quarters

Tessen

鉄扇

Iron fan used as a defensive weapon

鉄扇 – Tessen – The Iron Fan

The tessen was a fan reinforced with iron or made entirely of iron. Because it appeared to be an ordinary fan, it could be carried in places where swords were restricted. It could be used for signalling, self-defence, and personal protection in environments where carrying a sword was not permitted.

Long weapons for outdoors.

Short or concealed weapons for indoors.

形式と機動性 – Formality vs Mobility

Posture

Formality

Mobility

正座 (Seiza)

Very High

Low

不動座 (Fudōza)

High

Low

胡坐 (Agura)

Medium

Low

立膝 (Tatehiza)

Medium

跪坐 (Kiza)

Low

High

居合腰 (Iaigoshi)

Low

Very High

蹲踞 (Sonkyo)

Low

Very High

Standing

Low

Very High

As formality increases, mobility decreases.

As mobility increases, formality decreases.

服装と姿勢 – Clothing and Posture

Clothing affects posture and movement.

Clothing

Japanese

Effect

Obi

帯

Supports back and sword

Hakama

袴

Controls stride and footwork

Koshiita

腰板

Encourages upright posture

Pleats

袴のひだ

Allow knee movement

Tabi

足袋

Allow sliding movement

Armour

鎧

Restricts movement

Clothing changes posture.

Posture changes movement.

Movement changes technique.

結び – Closing Philosophy

The old schools did not teach one way of sitting, one way of wearing the sword, or one way of moving. They taught methods for indoors and outdoors, for armour and without armour, for long sword and short sword, for standing, kneeling, and crouching.

The form changed with the situation, but the principles remained the same.

Posture reflects the mind.

Movement reflects the body.

Together, they reveal the discipline of the practitioner.

In stillness, be ready.

In movement, remain composed.

This is the meaning of stillness and movement.

静と動の構え

No part of this website may be reproduced, copied, or distributed without written permission.