GO:0001997

positive regulation of the force of heart contraction by epinephrine-norepinephrine

Details: 
Any process that increases the force with which the cardiac muscles of the heart pump blood through the circulatory system as a result of the presence of epinephrine or norepinephrine in the bloodstream or released from the nerve endings. [GOC:dph, GOC:mtg_cardio]
Evidence Code: