Age Related Changes in Autonomic Functions

62 healthy volunteers divided into three age groups: younger (25-45 years, n=20), middle (46-60 years, n=20), and older (60-80 years, n=22). Excluded: history of hypertension, diabetes mellitus, arthritis, tuberculosis, symptoms of cardiac autonomic neuropathy, and use of medications affecting the autonomic nervous system.

Autonomic functions tested in three domains: cardio-vagal, adrenergic, and sudomotor functionssurrogate