title: Plasma catecholamine response of coronary-prone subjects (type A) to a specific challenge.
abstract: Plasma norepinephrine (NE) and epinephrine (E) were assayed in 15 men prone to develop coronary heart disease (type-A behavior pattern) and in 15 coronary-disease-resistant men (type-B behavior pattern) under resting, noncompetitive conditions and also immediately before, during, and after participation in a nonphysical competitive struggle. The average concentration of catecholamines was virtually the same in both groups under resting conditions. Under competitive conditions the NE concentration of the coronary-susceptible group rose an average of 30%, while that of the resistant group remained essentially unchanged. E concentration remained unchanged in both groups.
mesh_terms: D003163:Competitive Behavior; D003327:Coronary Disease / Q000097:blood* / Q000145:classification; D004837:Epinephrine / Q000097:blood*; D006801:Humans; D008297:Male; D008875:Middle Aged; D009638:Norepinephrine / Q000097:blood*; D010551:Personality
chemical_list: D009638:Norepinephrine; D004837:Epinephrine