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P. Michelozzi, G. Accetta, M. De Sario, D. D’Ippoliti, C. Marino, M. Baccini, A. Biggeri, H. Ross Anderson, K. Katsouyanni, F. Ballester, L. Bisanti, E. Cadum, B. Forsberg, F. Forastiere, P. G. Goodman, A. Hojs, U. Kirchmayer, S. Medina, A. Paldy, C. Schindler, J. Sunyer, C. A. Perucci and on Behalf of the PHEWE Collaborative Group, “High Temperature and Hospitalizations for Cardiovascular and Respiratory Causes in 12 European Cities,” American Journal of Respiratory and Critical Care Medicine, Vol. 179, No

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• TITLE: Investigation of the Effect of Ambient Temperature and Geomagnetic Activity on the Vascular Parameters of Healthy Volunteers

  AUTHORS: Yury Gurfinkel, Tamara Breus, Tatyana Zenchenko, Vadim Ozheredov

  KEYWORDS: Vascular Parameters; Geomagnetic Disturbances; Meteorological Factors

  JOURNAL NAME: Open Journal of Biophysics, Vol.2 No.2, April 27, 2012

  ABSTRACT: Aim of this paper is to reveal whether the geomagnetic activity (GMA) and meteorological factors (MFs) affect vascular parameters of healthy volunteers. As a trial study we used new device “Tonocard,” and new vascular parameters for study—a pulse wave velocity (PWV) and an endothelial function (EnF) in addition to blood pressure measurements. These parameters never investigated before in such aspects. As far as novelty of device itself and investigated parameters we limited ourselves by monitoring only four healthy volunteers (without cardiovascular pathology). To analyze the sensitivity of their aforementioned medical indices to GMA and MFs two independent mathematical approaches were used, one of whom is based on traditional methods of mathematical statistics and the other on the theory of pattern recognition Dependence of physiological characteristics on the atmospheric temperature, revealed by both applied mathematical approaches, showed complex non-linear character of biological replies: the reaction has a different form in different temperature ranges and is manifested in the form of synchronization of slow variations of physiological and atmospheric parameters (trends) with a period of several days, while the daily variations were virtually independent. The systolic blood pressure (SBP), PWV and a difference between two specially selected values of PWV (DPWV) are approximately equally depending on atmospheric temperature, which accounts for an average of 26% to 28% of their variations. Sensitivity to the GMA for this test was found only for PWV.