DOI: 10.36347/sjams.2018.v06i06.051

Pages: 2567-2573

Ageing in humans is characterized by alterations in the integrative regulation by the cardiovascular and autonomic nervous system (ANS) systems. Proper function of the ANS is achieved through a balance of parasympathetic and sympathetic out flow from the brain and this balance is shifted with advancing age towards decreased parasympathetic function and increased sympathetic discharge to the heart, vasculature and other organs. To observe the influence of aging process on autonomic nerve functions the non- invasive autonomic function tests were carried out by CAN Win Analysis System in 125 healthy subjects between the age group of 20 to 70 years and divided into five groups, each comprises of 25 subjects. The Parasympathetic activity was assessed by heart rate response to deep breathing (DB),30:15 ratio and valsalva maneuver(VM) and with age results of parasympathetic tests, revealed a significant linear decline in value .