Mathematics – Logic
Scientific paper
Mar 2006
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006sunge...1a..47d&link_type=abstract
Sun and Geosphere, vol.1, no. 1, p. 47-50
Mathematics
Logic
Scientific paper
A group of 86 volunteers was examined on each working day in autumn 2001 and in spring 2002. These periods were chosen because of maximal expected geomagnetic activity. There were 26 persons in the group on a drug treatment, mainly because of hypertension. Systolic and diastolic blood pressure and heart rate were registered. Pulse pressure was calculated. Data about subjective psycho-physiological complaints of the persons examined were also gathered. Altogether 2799 recordings were obtained and analyzed. MANOVA was employed to check the significance of the influence of three factors on the physiological parameters under consideration. The factors were as follows: 1) geomagnetic activity estimated by H-component of the local geomagnetic field and divided into five levels; 2) gender - males and females; 3) presence of medication. Post hoc analysis was performed to elicit the significance of differences in the factors' levels. The average arterial blood pressure, pulse pressure and the percentage of the persons in the group with subjective psycho-physiological complaints were found to increase significantly with the increase of geomagnetic activity. The maximal increment of systolic and diastolic blood pressure was 10-11% and for pulse pressure 13.6%. Analyses revealed that females and persons on a medication were more sensitive to the increase of geomagnetic activity than respectively males and persons with no medication.
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