Copyright © 1989 by the European Society of Cardiology.
© 1989 The European Society of Cardiology
The reliability of psychophysiological examinations under field conditions: Results of repetitive mental stress testing in middle-aged men
Rehabilitation Research Group, Dept. of Medicine, and Institute of Psychology, University of Bonn, F.R.G.
Received 29 July 1988; revised 11 January 1989; .
Requests for reprints to: Dr W. Langewitz, Department of Medicine, Sigmund-Freud-Str. 25, D-5300 Bonn 1, F.R.G.
Abstract
In an epidemiological examination outside specialized laboratories we investigated the test-retest stability of blood pressure (BP) and heart rate (HR) reactions to standardized mental stress in 136 men (mean age 44 ±7 years) with complaints of mental and physical fatigue. Repetitive stress testing was performed at 4-week intervals on four occasions. On all four occasions stress levels differed significantly from baseline levels (P<0·001). Baseline conditions for BP and HR were significantly correlated at 4-week and 8-week intervals (P < 0·001). Cardiovascular reactivity to mental stress was also stable over a 4,8, and 12-week period. We conclude that psychophysiological reactivity can be assessed with good reliability under field conditions.
Key Words: Cardiovascular diseases mental stress testing epidemiological research
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