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Published on: July 10, 2017
Sympathetic neural responses to mental stress: responders, nonresponders and sex differences
Jason R Carter1, Chester A Ray
1Dept. of Exercise Science, Michigan Technological Univ., 1400 Townsend Drive, Houghton, MI 49931, USA. jcarter@mtu.edu
Abstract:
Mental stress consistently increases heart rate (HR) and blood pressure (BP) in humans, despite inconsistent sympathetic neural responses that include increases, decreases, or no change in muscle sympathetic nerve activity (MSNA). The purpose of the present study was to examine associations between MSNA, BP, and HR responses to mental stress. Leg MSNA, BP, HR, and perceived stress levels were recorded during 3-5 min of mental arithmetic in 82 subjects (53 men and 29 women). Subjects were divided into positive responders (>or=Delta3 bursts/min; n = 40), negative responders (
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