Claim: Strain and counterstrain, which was created in 1955 by Lawrence Jones, is a hands-on treatment that attempts to alleviate muscle and connective tissue tightness where the involved tissue is "slackened" causing a relaxation of the "spasm".
Evidence: Within manual therapy, Strain-Counterstrain is a type of "passive positional release" created in 1955 by Lawrence Jones, D.O. It is a hands-on treatment that attempts to alleviate muscle and connective tissue tightness by the use of very specific treatment positions held for 90 seconds (can be held for up to 3 minutes in neurological patients). During the procedure, the involved tissue is "slackened" causing a relaxation of the "spasm" which, in turn, allows local areas of inflammation, trapped within the painful tissue to dissipate. Following this "release" there is an immediate reduction of pain and tension in the involved tissue.