#68 If no one has ever taught you - 誰も教えてくれなかったなら


Last time, I posted the theme of "Ukemi" from "Koshi-nage". After that I had the opportunities to talk with various people. I'm glad to know your thoughts.

What I want to emphasize is that you cannot ensure the safety with "Mae-ukemi" alone.

I recognize that many people in NZ dislike high falls Ukemi (Tobi-ukemi) training, but Dojos where don't practice or teach it are very rare in Japan and Europe.

It's a bit harsh, but refusing to learn the safe and correct training method is a dangerous idea.

For people with large bodies, it's important not to avoid "Ukemi" training, but to increase the amount of "Ukemi" training and improve your own safety.

Next year's international seminar will welcome Sensei from many countries. If they find that NZ is not practicing high falls at all, they may think that NZ is neglecting the safety.

"No one has taught me a safe way to practice, so it's dangerous, Just fancy move"........

Let's stop making such excuses anymore. Many new members are keen to learn, so old folks should not disturb their growth.

If no one has ever taught you a safe way to practice, look for someone who can teach you.

Take time and practice step by step, then "Tobi-ukemi" will become an important technique to prevent injury.

I am open to learning and improving what we do.

I don't know old members, but I am hoping that there will be an environment where beginners and junior class members have the opportunity to learn about the fun of "Uke" skills and the philosophy of Ueshiba-sensei.

Thank you for reading.

Related article: Boundary of Beautiful Aikido and Ugly Aikido

[ 誰も教えてくれなかったなら ]










テーマ : 合気道
ジャンル : スポーツ

#67 Ukemi from Koshi-nage - 腰投げの受身


In Judo, major accidents such as breaking neck bones occur occasionally. When you are thrown from thrower's back, you may fall off your neck if you try to take a front-roll (Mae-mawari-ukemi) instead of a high-roll (Kuten-ukemi).

Throwing techniques of Judo are generally very strong and fast. There is no grace to change the line when you are carried on the thrower's back.

Even in Aikido, a high-roll (Tobi-ukemi) is a technique that must be learned for safety. It's dangerous if you can't take a high-roll, not because it looks good.

There are many people who have had a painful experience with "Ukemi" in the past, but perhaps most of the reason was because you didn't master "Tobi-ukemi" at that time.

"Mae-ukemi" is only possible if the thrower stops the movement and kindly gives you the chance to change the line and falls almost like free-falling. If you try ”Mae-ukemi" when you are pulled and thrown towards the floor, you will damage your neck.

Because ”Mae-ukemi" alone cannot secure safety, I looked for someone who can teach me and started to practice after I was over 50 years old. I can say ”Tobi-ukemi" is not something that only young and gymnastics people can do.

If you take time and practice step by step, it will become an important technique to prevent injury.

Occasionally international students from Japan participate in training at NZ Dojo, and I always ask how they practice in Japan. 10 out of 10 people take “Tobi-ukemi” (high roll) from “Koshi-nage”. The reason is of course for safety.

In order to land safely on the mat, it is recommended that you take “Tobi-ukemi” without changing the first contact line.

Thank you for reading.

Related article: Change in thinking changes movement


[ 腰投げの受身 ]













テーマ : 合気道
ジャンル : スポーツ

#62 Meaning of "Suri-ashi" - すり足と足裏の使い方


Recently the popularity of city marathons has increased, and the media has frequently featured “How to run correctly”. While giving sports science explanations, it’s recommended to stretch the knee slightly and land on the ground from the heel. The way of swinging the arm is to swing the elbow widely backward to create kinetic energy, but not swing the elbow forward beyond the shoulder line.

In fact, marathon runners are doing that. It's just a way to move forward, but you will notice that the tactics are quite different between short and long distances.

The use of foot sole is different in sports, and in Japanese martial arts such as Judo, Kendo and Aikido, you use "Suri-ashi" (sliding feet) to land on the ground from toes, not from heel. The elbow should not be pulled behind the shoulder line. The centre of gravity is always placed on the toe ball of the sole and you learn the feeling of grabbing the ground with the soles.

Interestingly, people who walk like "Suri-ashi" in daily life are perceived as having health problems with leg muscles. It's also said that you slide feet because of bad posture.

For those who have a straight knee and a high centre of gravity during practice, I often try to talk about the idea of ”Suri-ashi". After that they are more conscious of how to use the feet, and the posture improve naturally.

In physical education classes at school, I think you were taught how to move forward efficiently as the correct way of running. However circular motion is important in Aikido, so we consciously use "Suri-ashi" in order to sense the ball of the soles.

Thank you for reading.

Related article: Types of foot movement, "Ashi-sabaki"

[ すり足と足裏の使い方 ]










テーマ : 合気道
ジャンル : スポーツ

#55 Suwari waza  座り技


As the exam gets closer, everyone practices the sitting techniques more eagerly than usual. I guess that is because "Suwari-waza" is weak point for everyone.

We are taught that “Suwari-waza” is basically the same as the standing technique, but by that alone it makes very stiff movements, I think.

Especially people who are not used to "Shikko" seem to think that being cramped is unavoidable.

First of all, I suggest that you consider the following points before remembering the behavior of the technique.

1. The step length of the sitting technique is shorter than the standing technique.
2. The length of the arm does not change.
3. If you move the arm downwards, the arm will hit the floor.
4. There is no space below the waist.

For example, in the case of "Suwari-waza Sankyo Omote", there are many people trying to apply "Sankyo" somehow by holding the opponent's arms. But if you keep a little away from the opponent, you do not need to hold the arm.

By placing your hands in front of you, you can smoothly move to "Sankyo".

In the standing technique, you step in and put weight on so that the opponent does not get up, but in the sitting technique, it is enough to control the elbow because the opponent is already sitting. It is the example that movement will be cramped when trying to make everything like a standing technique.

The space that existed in the standing technique does not exist in the sitting technique. Therefore, you need to adjust the position to create the space. It becomes the adjustment of the sitting technique.

Thanks for reading.

Related article: Principle of Leverage

[ 座り技 ]




1. 座り技の歩幅は立ち技よりも短い。
2. 腕の長さは変わらない。
3. 腕を下に動かせばマットに当たる。
4. 腰より下にはスペースが無い。




関連記事: 円運動と梃子の原理

テーマ : 合気道
ジャンル : スポーツ

#53 Review the actions we undertake unconsciously 無意識な行動を見直すこと


There are many things to be learned from Takase sensei in everyday practice. One of them is not to close the armpit of your opponent.

In the technique of grabbing the opponent's hand such as "Shiho-nage" and "Kote-gaeshi", there are many opportunities for the opponent to stop your movement by closing his armpit.

In fact, you may be pushing the opponent's elbow with careless movement, and closing his armpit.

So, we practice the movements to lead the opponent in the direction not closing his armpit from the beginning to the end.

Through this practice, I am learning the importance of being clearly aware of the direction of leading the opponent, and also I am reviewing the actions I undertake unconsciously.

In "Kousa-tori Shiho-nage" (holding crossed hands), you can also control movement by pushing the opponent's elbow in the direction to open it (not close).

Thank you for reading.

Related article: How to form unconscious behaviour



[ 無意識な行動を見直すこと ]








関連記事: 無意識下の動作

テーマ : 合気道
ジャンル : スポーツ

#52 Tai no henkou 体の変更


In 1935, O-sensei already instructed to do "Tai no henkou" (Katate-tori Tenkan) at the beginning of everyday practice. The points I pay attention to are as follows.

1. Drop the Uke's elbow while stretching out:
In "Katate-tori", I don’t perform "Tenkan" while a thumb is pointing upward. You won't be able to move nicely with the thumb upward.
By turning your palm upward at the moment when your wrist is grabbed, you can drop the Uke's elbow while stretching his arm.
People who are trying to move by force can be easily distinguished because their hands are shaking.
When you start "Tenkan", you need to direct the four fingers to your belly and stretch out while your palm is facing upward.

2. Minimize vertical movement:
Let's lower the centre of gravity from the beginning in "Hanmi" posture.
Because beginners often attempt to lower the centre of gravity after being grabbed, they tend to make bigger up and down movements.
Therefore, when being grabbed strongly, the centre of gravity won't go down and the shoulder will rise.
Lowering the centre of gravity from the beginning is to reduce vertical movements.

3. Prevent the body from rising up:
Every year, Aikikai Tokyo Headquarters publishes the guidance books written by “Doshu” Ueshiba-sensei.
In that book, it is said that you can put the weight on the contact point when doing "Tai no henkou".
At first I didn't understand the meaning well, but if I keep the centre of gravity lower, the weight naturally got on the contact point.
It makes sense to prevent the body from rising up by using the weight when you turn the body. Also, it will prevent the "Uke" from standing up.

Thank you for reading.

Related article: Tenkan - Understanding of the inertia force

Related article: Strong centre line and positioning

[ 体の変更 (片手取り転換) ]


1. 相手の肘を伸ばしたまま落とす:

2. 上下運動を小さくする:

3. 体の浮き上がりを抑える:

関連記事: 転換 - 慣性モーメントを理解する

関連記事: 強い中心線と位置取りの関係

テーマ : 合気道
ジャンル : スポーツ

#51 Kara-ashi 空足を踏む


When going up and down a staircase in dark, you may lose the balance of the body by mistaking the height of the stairs. Also, if your feet stumble with a stone, you will take several steps to keep balance.

Such an unavoidable wasteful movement is called "Kara-ashi" in Japanese.

In Aikido, there is always a process of breaking the balance of “Uke” before applying techniques, and the beauty of the technique depends on how you let “Uke” take wasteful steps “Kara-ashi”.

In other words, "Uke" needs to accept the process of wasteful steps "Kara-ashi". Since it repeats the same act in practice, it is very easy to avoid mis-steps, but then the meaning of practice will be lost.

For those who have experienced Western sports such as Rugby and Football, they seem to believe that the result of victory is everything. If a person with such an idea plays the "Uke", he won't accept the process of wasteful steps from the beginning.

It seems there is a thought that enjoys the collision of force and force.

Why did Ueshiba O-sensei strictly prohibit the game? What is the reason why you chose Aikido instead of other martial arts? I think that becoming able to answer firmly to such a question is to think about the practice method of Aikido.

I hope that many people will recognize the importance of "Kara-ashi".

Thanks for reading.

Related article: Three things we can begin immediately to become a good "Uke"

[ 空足を踏む ]








関連記事: 良い受けになるために今直ぐできる3つのこと

テーマ : 合気道
ジャンル : スポーツ

#50 Difference between Aikido and Kendo 素振りにみる合気道と剣道の違い


If you see a big guy holding Bokken (wooden sword) in chance, it may give you the illusion that it's like holding a chopstick in hand. The length and weight of the sword will be decided according to the body size of the owner, but the standard size of Bokken is obviously not suitable for XXXL size.

By the way, do you know that the standard size of Bokken you use is only half as heavy as steel made? Your arms will hurt if you keep on swinging, but actually you are just swinging a light wooden sword.

The kinetic energy is W = 1/2 x mass x square of velocity. In other words, kinetic energy is proportional to mass and proportional to square of speed.

If you hit something with a stick, you will need a lot of kinetic energy, so it's better to increase the mass and speed. However, since the sword is a weapon to cut and it is not a weapon to smash, the direction of the blade is more important than anything. If the blade is facing diagonally, nothing can be cut.

So, in Aikido assuming a steel sword, it is important to think about weight, speed and blade angle. Therefore, when you take "Suburi" exercises you need to be aware of the following points.

1. Don’t swing only with wrist
2. Change foot steps
3. Make the blade perpendicular to the cutting direction
4. Reduce the sound

Doubling the weight will double the kinetic energy, so don't swing only with your wrist. Also, when striking "Yokomen" or "Kesagiri" from the right, the right foot will be in front. When striking "Yokomen" or "Kesagiri" from the left, the left foot will be in front. You need to change foot steps.

A single-edged sword requires that the blade is perpendicular to the cutting direction. If the blade is standing straight, the swing sound will be smaller. When the sword trembles, the wind noise increases and cannot cut anything. By keeping the speed constant without swinging by force, please give priority to reducing the sound.

From the above, you can see that the foot movement of Aikido consider the weight of the steel sword, and the hand movement takes into account the angle of the blade (I call it the Pinky rule).

Meanwhile, Kendo uses a lightweight and cylindrical bamboo sword for the game. Therefore, speed is the top priority for both hand and foot movements. They often strike with the wrist only and don't change the foot steps.

So, instead of aiming at the speed of Kendo players, let's aiming for beautiful "Suburi" by considering the weight and the angle of the blade.

Thanks for reading.

Related article: Common between Kyudo and Aikido

Related article: Sticky Hand and Pinky Rule

[ 素振りにみる合気道と剣道の違い ]



運動エネルギーはW = 1/2 x 質量 x 速度の2乗となります。つまり運動エネルギーは質量に比例し、また、速さの2乗に比例します。



1. 手首で振らない
2. 足を踏み変える
3. 刃を立てる
4. 音を小さくする






関連記事: 弓道と合気道の共通点

関連記事: 吸い付く握り方と手刀の使い方

テーマ : 合気道
ジャンル : スポーツ

#47 Ashi-sabaki 足捌き


After a few years since you started Aikido, the questions ashamed to ask your sensei will increase little by little. "Ashi-sabaki" is one of those, I suppose.

Types of foot movement (“Ashi-sabaki”) along the line of attack are called "Okuri-ashi", "Tugi-ashi" and "Ayumi-ashi". There are 6 types of movement as there is “Mae” (forward) and “Ushiro” (backward).

> Okuri-ashi-mae
> Okuri-ashi-ushiro
> Tugi-ashi-mae
> Tugi-ashi-ushiro
> Ayumi-ashi-mae
> Ayumi-ashi-ushiro

When moving forward, kick the floor with the heel of the back foot and move the front foot, then pull the back foot. When moving backward, kick the floor with the toe of the front foot and move the back foot, then pull the front foot. The direction of "Hanmi" does not change.

When moving forward, attach the back foot to the heel of the front foot and then kick the floor with the heel of the back foot and move the front foot. When moving backward, attach the heel of the front foot to the back foot, then kick the floor with the toe of the front foot and move the back foot. The direction of "Hanmi" does not change.


When moving forward, move the back foot one step forward. The knee of the other foot can be touched behind the knee of the stepped foot. If it is not balanced, raise the heel of the back foot slightly to stabilize the centre of gravity. Turn the body with the ball of the foot and change the direction of "Hanmi" to the opposite side. The characteristic of "Ayumi-ashi" is not to kick the floor. The nose is always pointing the opponent. When moving backward, move the front foot one step behind, turn the body to change the direction of "Hanmi".

47 Ashi-sabaki-B

Depending on the techniques, there are also irregular footsteps of "Ayumi-ashi" that move one step after changing the direction of "Hanmi", but I will skip this time.

Also, "Uke" goes straight on the attack line, but "Tori" steps off the attack line of the opponent (“Irimi-taisabaki”). In short, there will be 12 types of foot movement in all.

Types of “Taisabaki” (body movement stepping off the attack line) are;
> Irimi (with Okuri-ashi, Tugi-ashi, Ayumi-ashi)
> Irimi Tenkan ( = Irimi with Ayumi-ashi then Tenkan)
> Tenkan
> Tenshin
> Tenkai

Thank you for reading.

Related article: Tips for "Tenkai" movement

[ 足捌きの種類 ]







また、受けは攻撃線上を真直ぐ進みますが、取りは相手の攻撃線を外して進みます(入り身 体捌き)。細かく言えば、全部で12種類の足捌きがあることになります。



テーマ : 合気道
ジャンル : スポーツ

#41 Make a situation that the opponent wants to move  動きたくなる状況を作る


When you watch Judo games, you often see scenes that both players grab each other and show no big action. For people who have never experienced Judo, it seems like a slightly strange and boring situation.

This is because they are trying to reverse the force point and the action point by shifting the fulcrum of the lever at the moment when the opponent attempted the throwing technique.

Experienced Judo players are experts on the principle of leverage, so it is fun to watch their fine movements. Actually, if people with knowledge of skills take countermeasure seriously, it turns out that applying technique is not easy. It is fundamentally different from demonstration.

By the way, if you are not grabbed by the opponent, there is nothing better than that. Then, the one who entered behind the opponent is overwhelmingly advantageous.

In Judo and Karate, there is nobody who doesn't mind even if the opponent enters behind himself. It is because everyone will feel great fear instantly.

However, in Aikido, even if someone is behind, there is a tendency to wait for the other's movements. I think it is because there is no sense of fear, but it definitely needs to be careful.

By creating the situation that the opponent wants to move, there is a chance to break the balance of the opponent. It is one of the enjoyments of practice to create that moment.

Thank you for reading.

Related article: The principle of leverage

[ 相手が動きたくなる状況を作る ]







テーマ : 合気道
ジャンル : スポーツ



初心者にも分かりやすく、理論的に基礎知識を説明します。なんとなく他人の動きを真似るのではなく、普段から考える力を育てていくことを目的としています。In this blog, I explain the basics in a theoretical way that is easy to understand for beginners. The aim is to help you to develop your ability to think, not to copy the movements somehow. Aikido is not magic. I will explain things that are not so clear, such as Ki and O-Sensei's philosophy.