by Régis Soavi
When we try to unbalance a person we know instinctively where we must touch, be it physically or psychologically. In most cases, we must reach the person’s centre in order to weaken them or make them vulnerable.
The vision of Seitai
It is hard to reach the centre of the partner’s sphere when the rim is powerful because all actions seem to bounce off the surface or slip as if on a smooth layer, elastic and capable of deforming itself without losing its density, therefore without being penetrated nor reached in any way. Everything depends on the way each of the partners will know how to use their central energy, their ki, and will succeed in doing so, be it in the role of Tori as well as in that of Uke.
Needless to say that other factors just as important, like determination, the urge to win, form an integral part of this sphere and can change the outcome, because ki is not an energy, that is to say, a kind of electricity or magnetism, as Western people are used to consider it nowadays. Ki is the result of multifactorial components which, having taken a certain form, becomes tangible even if it is hardly analysable and nearly unmeasurable except through its effects.
In all cases, one of the core elements of the action carried out will be the posture; not only the physical posture, but its energy balance, its tensions, coagulations, the areas where they are stuck, imprisoned, along with its relations – as well positive as negative – with the rest of the body and the resulting consequences. A science of human behaviour based on physical observation, sensitivity to the flows that go through the body and anatomical knowledge is of prime importance when needed in the practice of quite a lot of occupations. All the same, even for a dilettante or an amateur, such a science can help us understand those around us or get out of trouble when necessary.
One of the goals of that science – Seitai – is to gain a better understanding of human beings in their movement in general and unconscious movement in particular. It is a high-quality instrument which has already provided evidence of its value in Japan as well as in Europe and can be hardly neglected when we practice a martial art. Though it had been taught in France for over a decade by Tsuda sensei through the practice of Katsugen Undo, his conferences and the publication of his books, the ignorance of Seitai originator Noguchi sensei’s work in Western countries was a hindrance to its diffusion.
Today, Seitai calls for more recognition, in order to enable anyone taking interest in it to find elements that will bring them a better understanding, at least theoretical. It is thus important that Seitai becomes known to be better understood and accepted. That is why, from time to time, I modestly give to interested people a few indications, especially on Taihekis, which present – even if in a somewhat caricatural manner – a kind of charting of the human territory as regards ki, its circulation as well as its passageways, bridges, entry and exit points, etc.
The philosophy underlying Seitai is based on the principle that a human being is an indivisible Whole, which distinguishes it clearly from the Western science of the human, founded on an analytical principle.’ 1

An athletic body
Some people have a body with harmonious proportions, large and square shoulders, long legs, they look extremely steady, for many people they represent an example of the ideal human being – woman or man. But if we observe their behaviour just as they move, they tend to lean forward (this is one of the characteristics of type 5 people, who belong to the “pulmonary” or “forwards-backwards” group).
As a consequence, when they have to bend, they propel their behind backward and sometimes press their hands on their knees to compensate. We can easily recognise them because, even motionless, they often cross hands in their back in order to remain balanced; this is not a habit, it is a need for rebalancing. This is clearly the sign of a pelvis which lacks balance and solidity, the centre, the Hara remains vulnerable despite all the efforts. During an encounter or a training, it is yet enough, if we have taken the time to observe properly, to take advantage of the moment when the partner is moving – and thus leaning forward – to enter under the third point of the belly, about two fingers under the navel, and suck them or let them slide above us, regardless of the chosen technique.
This sounds simple when we read it but, though this is only one aspect of things, discovering and understanding postures are probably among the elements that have the greatest importance. At the beginning, during the learning phase of martial arts, some knowledge is needed to be able to perform the techniques on a concrete level; nevertheless it is through a training based on sensation and breathing that we acquire the ability to seize the right moment and be “in it”. Moreover, the work of observing partners, if we know about postures, can only be good for us; it can be a decisive plus in the case of a competition or if we have to determine whether there is real danger or merely intimidation.

Sumotoris
Sumotoris, with their corpulence, their very low posture, the way they move, seem to be ideal examples of stability and balance, at least physically. Though their training emphasises certain tendencies they already have and reinforces their abilities in the direction of solidity, it might deform others for the sake of prospective success.
Anyway, from the point of view of Taihekis, they cannot escape their basic tendency. Of course there are Sumotoris of all types, but some tendencies, some Taihekis are more represented than others. In the case of Sumotoris belonging to the vertical2 groups, there are few of type 1 because this kind of deformation quickly causes their elimination. The reason is that from their very early age they turn out to be quite incompetent, even when they are strong physically they are very easily destabilised. The main cause of this lies in the way they approach action. They always follow an idea of a preconceived fight or they follow their perception of the fight as it progresses, and thus they are always late and surprised by the action of their opponent.
On the other hand, type 2 sumotoris, when they have observed their opponents’ most recent fights properly, when they are well guided, can define a strategy which, if not disturbed by imponderables, can lead them to victory. They have an excellent knowledge of physiology and body anatomy as well motionless as in motion, which enables them when they want to unbalance their opponent to do it with best chance of success, because the ground has been well prepared at least theoretically. They also rely on the logic and thinking stemming from the previous fights because this is what guides them – rarely sensation or intuition. Once they have become Yokozunas, they retire and dedicate themselves to writing books, articles about their life, their training, or else use their reputation in order to support righteous deeds, etc.

Twisting for winning
For some people, unbalancing means winning, by charging and then taking advantage thanks to a direct frontal attack. It seems to be the best solution if not the only possibility occurring to their mind, and in no case can they resist it. These persons always ready to fight, to react, are generally very physical in their reactions. When they react with attacks or psychological replies, for instance little insidious sentences, one can easily see that they twist, their pelvis no longer being in the same direction than the central line of their face. One can also notice that, in order to prepare for immediate action, their body shows a torsion that strengthens their fulcrums. This torsion, when permanent, is an obstacle to free movement for the person who has it and must bear it. If one fails to normalise it, a way out could be managing to use it, say, in a work or an activity that requires a good sense of competition. The people with this type of deformation suffer the consequences in spite of themselves. They show an almost permanent tension and therefore a lot of difficulties to relax and take their time. This leads to difficult relationships with others because they eternally feel in competition.
Having a knowledge of Seitai and more precisely of Taihekis enables us to understand this type of behavioural tendencies better. It makes it possible to know when and how to take action without falling into the trap of rivalry that these people try to set up around themselves in order to prepare for defence and consequently to attack. Individuals of this kind belong to the “twisted” group and everything is based on their having unconsciously a sensation of great weakness that they will never admit. Basically they feel in danger permanently, that is why they consider the best defence to be immediate attack, because it surprises the opponent and is meant to leave no occasion for reply.

An archetype of the human being
Sometimes, a little sentence or a few well-placed words can change a situation – for better or for worse. If one can breathe deeply and concentrate ki in the lower abdomen, by taking action at the right moment one can bring down a whole building and transform what seemed to be an impregnable fortress into a funfair cardboard-paste decor. Abdominal respiration is part of the secrets available to all practitioners provided they direct their attention to it and keep training in that direction. According to Seitai, people whose energy naturally concentrates in the lower part of the body, at the risk of coagulating in absence of normalisation, are classified either in so-called “twisted” group (mainly3 type 7) or in the “pelvic” group.
Their concentration can be perceived through the intensity of their gaze, which is already extremely destabilising in itself; we need only see again the few movies that we know about O sensei – who belonged himself to type 9 – to be persuaded.
The posture of Sumotoris when about to fight is highly suitable for a type 9 person since ‘[t]here is a big difference whether the pelvis is open or closed with the persons of this type. They can squat right down without raising their heels off the ground, and can stay in this position for a long time: it is their position of relaxation. When they stand up, the weight shifts from the outer edges of the feet to the root of the big toes. This is their position of tension.’ 7
Sensitivity and intuition
Aikido leads us to stability and balance. Although by means of different exercises, Seitai also appears as a way following the same direction. The combination of both – Aikido as a martial art and Seitai through Katsugen Undo as proposed by Tsuda sensei – has allowed our School to continue in this direction, back to simple yet essential sensitivity, in a world being more about insensitivity and stiffening for sake of protectiveness. Only by recovering our intuition and getting our receptivity active again can we be actors of our life.
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‘To unbalance is to destabilse’, an article by Régis Soavi published in October 2022 in Self et Dragon Spécial Aikido n° 11.
Crédits photos : Bas van Buuren, Yann Allegret, Paul Bernas
- Tsuda Itsuo, The Non-Doing, Chap. VII, Yume Editions (Paris), 2013, p. 72 (1st ed. in French, 1973, pub. Le Courrier du Livre (Paris), p. 68)
- there are two vertical groups, whose tendencies are called type 1 and type 2 (Translator’s note)
- type 7 and type 8 are the names of the two tendencies making up the twisted group (Translator’s note)
- the pelvic group is divided into two tendencies named type 9 and type 10 (Translator’s note)
- op. cit., Chap. IX, p. 94 (1st ed. p. 90)
- ibid., Chap. IX, p. 92 (p. 87)
- ibid., Chap. IX, p. 91–2 (p. 87)