Welcome to the web page of the PSA, the Professional Sotai Association, a

not-for-profit organisation for sotai professionals and students.


Our aim is to promote and further the study, use and training of professionals

in the complementary health therapy called Sotai or Sotai Ho.

The art of painless relief

Sotai or Sotai Ho is a form of muscular or movement therapy of Japanese

origin created by Dr. Keizo Hashimoto, a Japanese medical surgeon


Through his knowledge of Oriental and Western medicine he developed a model

of treatment that was based on returning natural body alignment by moving

joints in a comfortable way rather than adjusting towards pain.

Sotai Therapy provides a method for neuromuscular re-education and promotes

healing in the circulatory, nervous and endocrine systems by untwisting

muscular holding patterns.

Sotai exercises increase mobility, flexibility and reduce or eliminate pain as

found in back problems, torticollis, scoliosis, ankle or knee sprains, etc.


Sotai Ho is a systematic form of exercise using active and passive exercises to

correct imbalances in the structural integrity of the body. The goal is to see

where one’s body is out of alignment and to practise specific exercises to

alleviate each disorder.

The exercises and techniques are very gentle, equalise muscle tone and can

correct postural imbalance.

The aim of a Sotai treatment is to eliminate pain, line up bones when they are

misaligned and release muscular stiffness or pain anywhere in the body.

The two main principles behind Sotai are:

1) Follow the line of least resistance. If you have difficulty, or it is painful

to move a muscle to the left, then you should do the exercise in the other

direction, away from discomfort, pain or stiffness.

These stretches in only one direction (i.e. only to the right, or only to the left),

the direction in which the movement doesn't hurt, or feels the most

comfortable, lead to principle number


Following these two principles gives us the most important characteristic of

Sotai: we can alleviate, reduce or eliminate muscular pain with exercises that

are not painful.


“To treat a patient for an illness without correcting distortion in their frame is like bailing water

with a bottomless bucket.” – Keizo Hashimoto

To contact us send us an email to: admin@stai.net or fill in the form in contact us