<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 over-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>
<sod>The idea behind counterstrain states that tender points result from reflexive muscular spasm that correspond to dysfunctional motor segments, due to the compensation of an antagonist muscle responding to agonist muscle over-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>