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