title: Heart rate, urinary catecholamines and anxiety responses during mental stress in men in their fifties and seventies.
abstract: Alterations with ageing in the responses of heart rate (HR), urinary excretion of free epinephrine (E) and norepinephrine (NE) and anxiety were investigated during mild mental stress. Forty-eight normal male volunteers were studied: in control conditions; when subjected to psychometric tests; and during recovery. Men in their seventies had lower baseline levels of HR, E and NE than men in their fifties. Several anxiety indices were positively correlated with E. HR and NE were positively correlated. During stress, mean HR and E levels increased in the two age groups by the same percentages. Mean HR and E levels returned to pre-stress values more slowly in the older age group.
mesh_terms: D000367:Age Factors; D000368:Aged; D001007:Anxiety / Q000503:physiopathology*; D004837:Epinephrine / Q000652:urine*; D006339:Heart Rate; D006801:Humans; D008297:Male; D008875:Middle Aged; D009638:Norepinephrine / Q000652:urine*; D013315:Stress, Psychological / Q000503:physiopathology*
chemical_list: D009638:Norepinephrine; D004837:Epinephrine