The practice of Rolfing was developed in the 1940s by
Ida Rolf, who held a PhD in biological chemistry from
Columbia University. Originally called
Structural Integration, Rolf's method was influenced by
osteopathic manipulation, yoga, postural training therapies, and the
general semantics of
Alfred Korzybski. Rolf began formally teaching her method in the 1950s at the European College of Osteopathy in
Maidstone, England, and later at the
Esalen Institute in
Big Sur, California, where she worked with other figures in the
Human Potential Movement. In 1971, Rolf founded the Rolf Institute of Structural Integration in
Boulder, Colorado, to formalize training in her method. By 2010, the Institute had expanded to include multiple training centers worldwide. In 1990, a group of senior faculty founded the Guild for Structural Integration, a separate teaching organization. Today, multiple schools and professional associations offer training in Structural Integration. The International Association of Structural Integrators (IASI), founded in 2002, maintains certification standards across various schools worldwide. As of 2025, there are more than 1,950 Rolfers worldwide. == The field of Structural Integration ==