He further states that muscle bundles will only elongate to the extent that their fascial sheath will permit. It is fascial contracture that restricts muscular elongation and joint range of motion. Fascia is the body's only continuum that hooks us together. It's the most widely distributed tissue of the body. It expresses lamination that tends to go in opposite directions.
Fascia expresses mechanical changes such as soldifying and shortening.
Fascia expresses biomechanical changes since fluid flows through it and the intercellular spaces affecting the nutrition of tissues. Fascia is related to the nervous system since it contains type C nociceptors and is the cause of entrapment syndromes throughout the body. Fascia surrounds the autonomic nervous system. The system is all-inclusive. IFR stresses evaluation and treatment of the fascia as a system rather than evaluating specific muscles.