ロルフの死後、ロルフィングは複数の流派に別れ[1][13]、「認定ロルファー(Certified Rolfer)」、「プラクティショナー・オブ・ザ・ロルフ・メソッド・オブ・ストラクチュラル・インテグレーション(構造統合ロルフメソッド・プラクティショナー、Practitioners of the Rolf Method of Structural Integration)」等の民間資格がある[1][13]。
^ abcMyers TW (2004). “Structural integration—developments in Ida Rolf's 'Recipe'—I”. Journal of Bodywork and Movement Therapies8 (2): 131–42. doi:10.1016/S1360-8592(03)00088-3. ISSN1360-8592.
^Deutsch, Judith E. (2008). “The Ida Rolf Method of Structural Integration”. In Deutsch, Judith E.. Complementary Therapies for Physical Therapy: A Clinical Decision-Making Approach. Saunders. pp. 266–67. ISBN978-0721601113
^Clow B (2001). Negotiating Disease: Power and Cancer Care, 1900–1950. McGill-Queen's University Press. p. 63. ISBN978-0773522107. https://books.google.com/books?id=pFyee0XcIfoC&pg=PA63. "Before we explore medical reactions to therapeutic innovations in this era, we must stop to consider the meaning of 'alternative medicine' in this context. Often scholars use the term to denote systems of healing that are philosophically as well as therapeutically distinct from regular medicine: homeopathy, reflexology, rolfing, macrobiotics, and spiritual healing, to name a few, embody interpretations of health, illness, and healing that are not only different from, but also at odds with conventional medical opinion."
^Cordón, LA (2005), Rolfing, Greenwood Publishing Group, pp. 217–18, ISBN978-0-313-32457-4, https://books.google.com/books?id=Uy1gmwcAgg4C&pg=PA218: "The idea of vital energy... does not correspond to known facts of how the human body operates. Similarly, there is absolutely no support in psychological literature for the idea of traumatic experiences being repressed in the form of muscle memory, and so the basic ideas of Rolfing certainly fall into the category of pseudoscience."
Clow B (2001). Negotiating Disease: Power and Cancer Care, 1900–1950. McGill-Queen's University Press. p. 63. ISBN978-0773522107. https://books.google.com/books?id=pFyee0XcIfoC&pg=PA63. "Before we explore medical reactions to therapeutic innovations in this era, we must stop to consider the meaning of 'alternative medicine' in this context. Often scholars use the term to denote systems of healing that are philosophically as well as therapeutically distinct from regular medicine: homeopathy, reflexology, rolfing, macrobiotics, and spiritual healing, to name a few, embody interpretations of health, illness, and healing that are not only different from, but also at odds with conventional medical opinion."
^ abHouglum, Peggy (2016). Therapeutic Exercise for Musculoskeletal Injuries (4th ed.). Human Kinetics. pp. 432–34. ISBN978-0736075954. https://books.google.com/books?id=WVcvDAAAQBAJ. "Dr. Rolf based her techniques on the realization that fascia surrounded all tissue and body structures, so it also influenced those tissues and structures when it is modified. She observed that the body centers on a vertical line of pull created by gravity. It was her theory that the body is most efficient and healthy when it can function in an aligned and balanced arrangement. With gravity's continuing pull, stresses and injuries occur to pull the body out of its normal alignment; imbalance occurs and causes the body to become painful, malaligned, and inefficient. Rolf's philosophy and techniques focus on improving the body's posture so all functions including breathing, flexibility, strength, and coordination are optimally efficient."
Robert C. Fuller. “5 Sexuality and Religious Passion: The Somatics of Spiritual Transformation(セクシュアリティと宗教的熱情:霊的変容の身体性)”. Spirituality in the Flesh: Bodily Sources of Religious Experiences(肉体における霊性:宗教的体験の肉体的源泉). Oxford University Press. pp. 99–130. doi:10.1093/acprof:oso/9780195369175.003.0005
Hammer, Olav (2008), “Human Potential Movement”, The Brill Dictionary of Gnosis & Western Esotericism Online (Brill), doi:10.1163/1873-8338_dgwe_DGWE_169