spontaneus movement, osei



Our organism is not a bundle of cells, tissues, and organs. It is a living being that is formed following a rigourous order, the result of million of years of evolution. It has the capacity to react to different situations in order to keep its own vital balance, it can also adapt to the environment and transform it. Our organism responds to these situations, both internal and external, as a unit because its different activities are completely and absolutely interdependent.

Haruchika Noguchi showed that this capacity of our organism to respond to different situations as a unit arises from the 5 universal movements in + and in –, whether they are under tension or distension. These movements act throughout the different energetic activities (motor, biological, and psychic) of the living being and they form the spontaneous movement.

Osei is the organism’s natural capacity of reaction through the absolute interrelation of its different energetic activities. The osei comprises five oseis + and -, which are the different ways life is manifested.

The vertical osei + and -– (oseis I and II) is essential in the formation of the nervous system and of the sight. It establishes the natural interrelation between:
– the upward movement
– the planning biological activity
– the contemplative or observant psychic activity

The frontal osei + and – (oseis V and VI) is essential in the formation of the muscular-respiratory system and the sense of smell. It establishes the natural interrelation between:
– the unidirectional forward movement
– the metabolic-respiratory biological activity
– the pragmatic or efficient psychic activity

The lateral osei + and – (oseis III and IV) is essential in the formation of the digestive-circulatory system and the sense of taste. It establishes the natural interrelation between:
– the left-right movement
– the assimlatory-circulatory biological activity
– the emotional or mediator psychic activity

The rotary osei + and – (oseis VII and VIII) is essential in the formation of the excretory system and the sense of hearing. It establishes the natural interrelation between:
– the twisting or torsion movement
– the excretory biological activity
– the competitive or resolute psychic activity

The central osei + and – (oseis IX and X) is essential in the formation of the reproductive-subjacent connective system and the sense of touch. It establishes the natural interrelation between:
– the inward-outward movement
– the biological activity of cell regeneration
– the affective or absolute psychic activity




upward movement, vertical osei




unidirectional forward
movement, frontal osei




left-right movement, lateral osei




torsion movement, rotary osei




inward-outward movement,
central osei

                  anterior view           left lateral view         superior view





The action of the five movements or oseis on the human pelvis


Osei and oseis can be translated into English as reactivity or reactivities. This term is used in Physics, Chemistry, and Psychology to refer to different things. Thus, we use the Japanese word Osei, which has no plural form in this language, so as to avoid any confusion.


“SEITAI: Observ the life, understand it and recovering the vitality”

We have already had more than 24.000 views. We recommend that you do not miss it. You can find it, on our Youtube Channel, in three languages: Catalan, Spanish and English.

Teaser SEITAI by Igor Cortadellas, with english subtitles


We have a new headquarters of the SEITAI Barcelona Foundation where the activities of the SEITAI Academy where they also take place. The space enjoys conditions appropriate to the needs and requirements of our activity.

Carrer de Plató, 6, 1er-6a. 08021 Barcelona


You can see and purchase all the available books by Katsumi Mamine in this section.

You can also find the following e-book titles:


-seitai, una nueva comprensión de la naturaleza humana

-la osei y la CVP ósea

-la osei y la CVP muscular

The work of digitizing the rest of the books is underway. We will keep you informed as they become available



We invite you to see the event to commemorate the first anniversary of the death of our beloved Katsumi Mamine Miwa, this link (in spanish).