Return to ITM Online
The Legacy of Shizuto Masunaga
Shiatsu refers generally to a Japanese pressure therapy used to relieve a variety of problems including back pain, neck and shoulder problems, stress, insomnia, digestive problems, and fatigue. It is based on traditional Chinese medicine techniques, particularly massage therapy that has been recommended since ancient tmes, with certain Japanese innovations. Shiatsu acquired its name with the publication of Tenpaku Tamai's book Shiatsu Ho (Shiatsu Method) in 1919. As a technique separate from other manual therapies, such as Anma (which had been developed in Japan during the 17th century), shiatsu was officially recognized by the Japanese government with a series of laws passed during the period 1955-1964. Its recognition and spread resulted mainly from the efforts of Tokujiro Namikoshi, the founder of modern shiatsu (sometimes called Namikoshi Shiatsu). Namikoshi was author of the book Do It Yourself-3 Minute Shiatsu, which became a best seller; he appeared on television to promote his technique, and used the catch phrase: "All you have to do is press." At that time, finger-pressure was the primary technique of shiatsu.
Zen is one of the sects of Buddhism; it involves training the mind through meditation. The fundamental purpose of Zen is to achieve total enlightenment through the discovery of one's basic nature. Its principles and approaches can be applied to numerous human endeavors. Many aspects of Japanese culture have been influenced by Zen, including archery, aikido, judo and other martial arts, gardening and architecture, tea ceremony, calligraphy, and haiku (Japanese poetry). In this case, it is applied to massage therapy.
Zen Shiatsu was established by a Shizuto Masunaga (1925-1981; see Figure 1), who was born into a family of Shiatsu practitioners. After studying psychology, he decided to pursue shiatsu as well. While reading the classic medical texts, he investigated the practical clinical aspects of shiatsu. Masunaga became a professor of psychology at Tokyo University and, at the same time, he taught psychology at the Japan Shiatsu School. During the late 1970s, one of his new students, Wataru Ohashi, brought Masunaga to the United States, where he provided some teachings in New York and San Francisco. Masunaga then wrote two books about his theoretical framework for Zen Shiatsu and its practical applications, including Zen Shiatsu: How to Harmonize Yin and Yang for Better Health (written with the help of Ohashi; see Figure 2), and Meridian Exercises, which described yoga-like exercises for self-help in maintaining internal balance and good circulation.
Zen Shiatsu is a form of bodywork administered by thumbs, fingers, palms and elbows, feet and knees. It depends for its success on a meditative activity of the practitioner, aimed especially at detecting the body responses to the treatment, which influences the subsequent treatment step by step. Pressure is applied to all parts of the body along specific pathways (meridians). These are essentially the same meridians that are used in traditional Chinese medicine for acupuncture, though modified and extended by Masunaga (so they are sometimes called Masunaga Meridians; see Figures 3-6). It is understood that this technique stimulates the natural healing powers of the body, wherefore symptoms of disease lessen and vitality is regained.
The professional Zen Shiatsu therapist is trained to feel the body's condition, particularly the circulation, by his/her hands in order to find the imbalanced areas in the body. By skillfully stimulating the imbalanced meridians, the therapist attempts to restore the balanced flow. From the Western point of view, shiatsu works directly to calm the autonomic nervous system, which has the effect of calming nervous distress and increasing resistance to stress. By helping with blood and lymph circulation in the body, shiatsu helps to maintain and improve muscle tone and healthy internal organ functions. It is believed that shiatsu can also strengthen the immune system. Regular and consistent shiatsu treatments can become an important aspect of preventive health care as well as treatment for existing symptoms.
Zen Shiatsu is ideally performed while the recipient lies on a futon on the floor, allowing the practitioner access from all sides and the ability to apply pressure using body weight (as opposed to pushing just with finger pressure, as may be done with other shiatsu techniques; see Figure 7). The shiatsu recipient should be dressed comfortably with light clothing. No massage oils or lotions are used or needed because the practitioner does not slide along the body surface, but gives a series of presses along the pathways.
Consistent with the basic concepts of traditional Chinese medicine, Zen Shiatsu is grounded in the theory that health problems are attributed to, or at least involve:
The unique features of Zen Shiatsu, compared to traditional Chinese medicine techniques such as acupuncture or other shiatsu techniques, are these:
Because of its connection to traditional Chinese medicine, Zen Shiatsu serves as an excellent adjunct to acupuncture therapy as well as Chinese or Japanese herb prescribing, fitting well with the theoretical framework. Further, it serves as a complementary therapy for Western methods of manipulation, including chiropractic or standard massage (e.g., Swedish style), providing an entirely different stimulus to the body.
Although Masunaga's Zen Shiatsu is considered essential reading for practitioners, the main textbook of Zen Shiatsu used today is Shiatsu Theory and Practice by Carola Beresford-Cooke (first published 1996; revised edition 2002). She has outlined five basic principles of Zen Shiatsu as follows:
Figure 1. Shizuto Masunaga (1925-1981).
Figure 2. Masunaga's primary text: Zen Shiatsu.
Figure 3. The Meridians Of Masunaga's Zen Shiatsu.
Figure 4. Masunaga's Meridians at the Head.
Figure 5. Hara diagnosis chart based on Mubunsai's text of 1685.
Figure 6. A modern interpretation of a Hara diagnosis chart;
a key to the abdominal diagnosis chart on the right is available at:
Figure 7. Demonstration of Modified Zen Shiatsu at the London College of Shiatsu
The style used at this college is from Takeo Suzuki who worked with
Masunaga and taught Shiatsu at the Iokai Center before starting his
own school in Tokyo. Suzuki further refined and developed the work
of Masunaga for his own unique style.