Kokutsu-dachi

Name: Kokutsu-dachi (後屈立ち)
English: Rear-weighted stance / back-leaning stance

Introduction

Kokutsu-dachi is a rear-weighted, directional stance in which most of the body weight is carried by the rear leg while the front leg remains lighter and less loaded.

In Masutatsu Oyama’s basic description, the stance corresponds to back leaning stance. It trains the ability to carry the body rearward without losing posture, direction or readiness. In Kyokushin’s basic system it is used especially for balance, receiving techniques, movement and formal structure in kata.

Definition

Kokutsu-dachi is an asymmetrical stance in which one foot is placed in front of the other and the body is carried rearward through a clear weight shift toward the rear leg.

The stance is characterized by:

• the front foot points forward
• the rear foot is angled outward
• both legs are bent
• most of the weight is carried by the rear leg
• the upper body remains upright and gathered
• the stance provides balance, control and readiness for the next movement

In this documentation, the weight distribution is given as 70% on the rear leg and 30% on the front leg, in line with Oyama’s description of the stance.

Technical figure

The figure shows Kokutsu-dachi from above as a technical reference diagram. The front foot is shown in the direction of movement with a lighter load, while the rear foot carries most of the weight and is angled outward.

The 70% / 30% marking shows the rear-weighted character of the stance and is consistent with Oyama’s description of back leaning stance. The 1× marking, however, should be understood as a pedagogical proportion marker in the diagram, not as an exact measurement from Oyama.

The diagram should be read as support for foot placement, direction, weight distribution and balance. It does not replace the physical adjustment that takes place in training under an instructor’s correction.

Structure and form

Feet

One foot is placed in front of the other. The front foot points forward in the direction of the technique and is kept lighter, but not passive. The toes remain active so that the foot maintains contact, control and readiness.

The rear foot is placed behind and slightly outside the front line. It is angled outward, in practical Kyokushin instruction often around 45°. This angle should be understood as a pedagogical guideline for opening the foot, not as an absolute measurement that must look identical for every practitioner.

The base should be long and wide enough to create a clear rear-weighted position without letting the body fall backward or making the front leg empty.

Legs

Both legs are bent. The rear leg carries most of the body weight and should feel active, strong and engaged. The front leg is lighter but maintains contact with the floor and direction forward.

The knees are kept aligned with the direction of the feet. The rear knee must not collapse inward, and the front knee should not lock or collapse. The stance should feel low and controlled, but not so low that mobility is lost.

Hips

The hips are kept low, gathered and technically organized. The pelvis should remain neutral enough for the upper body to stay upright while the weight is clearly carried rearward.

In practical training, the hips should not rotate away from the direction of the stance or release the structural tension of the base. Feet, legs and hips should work together so that the stance is firm without becoming rigid.

Torso and spine

The spine remains upright and the body is carried rearward as a whole. This means that the stance is rear-weighted; it does not mean that the upper body hangs backward or folds at the waist.

Head, rib cage, pelvis and rear leg should feel gathered over the base. The body should be stable enough to receive force while remaining ready to move.

Shoulders, arms and hands

The arm position is determined by the technique being performed. In pure stance training the arms may be held neutrally, while in kihon, idō geiko and kata they follow the current block, strike or transition.

Kokutsu-dachi often appears together with receiving or protective techniques, for example chūdan uchi uke and shutō mawashi uke. The important point is that the arm technique must not pull the body out of its rear-weighted structure.

Gaze

The gaze is kept in the direction of the technique. The head remains natural and upright, without lifting the chin or tensing the neck backward.

Weight distribution

Kokutsu-dachi is carried with most of the weight on the rear leg.

In this documentation, the weight distribution is given as:

• 70% on the rear leg
• 30% on the front leg

This is a central characteristic of the stance. The front foot should be lighter and less loaded, but it must not lose contact, direction or function. If the weight becomes too evenly distributed between the legs, the stance loses its rear-weighted character. If the front leg becomes completely empty, the form instead approaches another type of rear-weighted stance.

Center of gravity and balance

The center of gravity is kept low and shifted toward the rear leg. The balance should feel gathered rather than hanging backward. The practitioner should be able to remain stable in the stance while also being able to continue into a block, step, kick or counter-technique.

Kokutsu-dachi therefore trains a particular form of balance: the body is not distributed evenly between both legs, but it must still retain its center. The rear support should provide control while the front leg preserves readiness and direction.

Technical purpose

Kokutsu-dachi is trained to develop control over rear-weighted body support.

The technical purpose of the stance is to:

• create stable rear weighting
• develop balance in an asymmetrical base
• strengthen the supporting function of the rear leg
• unload the front leg without losing contact
• provide a base for receiving and protective techniques
• prepare transitions into a step, kick or counterattack
• train hip control and integrated body organization

The stance should not be understood as a passive resting position. It should be active, low and ready for the next movement.

Use

Basic training

In basic training, Kokutsu-dachi is used to practice rear weighting, a low center of gravity, leg control and posture. It helps the practitioner understand how the body can be carried rearward without the upper body collapsing into a backward lean or the front foot losing function.

Kihon / Idō geiko

In kihon and idō geiko, Kokutsu-dachi is often used together with techniques in which the body needs to remain gathered toward the rear, especially receiving blocks and transitions. During movement, the stance should form smoothly and continuously without the step being broken into several separate corrections.

Kata

Kokutsu-dachi has a clear place in kata. It is often used as a base for blocks and receiving techniques, especially in sequences where the body needs to be rear-weighted while still directed forward.

Kumite / application

In kumite, Kokutsu-dachi is rarely held as a long-lasting formal stance. The underlying principle is nevertheless important: the body can briefly be carried rearward to receive, evade, create distance or prepare a counter-movement. The formal stance therefore trains a body principle that can be expressed more dynamically in application.

Technical key points

• Point the front foot forward.
• Angle the rear foot outward.
• Bend both legs.
• Place most of the weight on the rear leg.
• Keep the front leg lighter, but active.
• Lower the center of gravity without losing mobility.
• Keep the hips gathered and stable.
• Keep the spine upright.
• Carry the body rearward without collapsing the upper body into a backward lean.
• Keep the gaze in the direction of the technique.

Common mistakes

Common mistakes in Kokutsu-dachi include:

• distributing the weight too evenly between the legs
• allowing the weight to drift forward so the stance loses its rear weighting
• leaning the upper body backward instead of carrying the whole stance rearward
• making the front leg completely passive or tense and locked
• allowing the rear knee to collapse inward
• angling the rear foot too much or too little
• rotating the hips away from the direction of the stance
• making the stance too high and losing support
• breaking the entry into the stance into separate corrections afterward
• allowing the arm technique to pull the body out of balance

Comment

Kokutsu-dachi is a central stance for understanding rear weighting, balance and receiving structure in Kyokushin. It teaches the practitioner to carry the body low and gathered on the rear leg while preserving direction, posture and readiness. Its value therefore lies not only in the 70/30 distribution, but in the ability to make rear support active and usable.