['< sod > the theory behind counterstrain states that tender points result from reflexive muscular spasm that correspond to dysfunctional motor segments. this is due to the compensation of an antagonist muscle responding to agonist muscle during over - muscular lengthening. < ref name = " rational irrational mt " > { { cite book book | s last1 = kusunose | first1 = randall | title = rational manual therapies | date = 1992 | publisher = williams & wilkins | isbn = 978 - 0683004205 | page = 324 - 325 } } < / ref > < eod > < sod > the idea behind counterstrain this states is that tender points result from reflexive muscular spasm that correspond to dysfunctional motor segments, due to the reduced compensation of an antagonist muscle responding to agonist antagonist muscle over - lengthening. < ref name = " rational mt " > { { cite book | last1 = randall kusunose | first1 = randall | title = rational manual therapies | date = 1992 | publisher = williams & wilkins | isbn = 978 - 0683004205 | page = 324 - 325 } } < / ref > < eod >']