Circannual variation in human diastolic blood pressure during consecutive solar cycles

R. B. Sothern, Germaine G Cornelissen-Guillaume, G. Katinas, G. Mitsutake, S. Nintcheu-Fata, J. Siegelová, B. Fišer, P. Homolka, P. Vank, F. Halberg

Research output: Contribution to journalArticlepeer-review

4 Scopus citations

Abstract

Putative circadecadal modulations of a circannual variation in diastolic blood pressure are explored in a still accumulating 35-year record of self-measurements by a clinically healthy man. Analyses of monthly means by gliding spectra, one-way analysis of variance (ANOVA), and cosinor were carried out after removing data collected during travel across time zones or during illness. An about yearly change in diastolic blood pressure may or may not be detected with statistical significance by cosinor or ANOVA, apparently as a function of solar cycle number and/or stage. It appears to be, however, 1-year synchronized in the entire span analysed as a whole. A given variable such as diastolic blood pressure may be characterized by multifrequency rhythms that may intermodulate, so that findings in different stages of cycles with the lowest (e.g., circadecadal) frequency mapped may determine different outcomes in cycles with higher frequencies, such as circannuals.

Original languageEnglish (US)
Pages (from-to)107-114
Number of pages8
JournalScripta Medica Facultatis Medicae Universitatis Brunensis Masarykianae
Volume78
Issue number2
StatePublished - Oct 10 2005

Keywords

  • Blood pressure
  • Circannual rhythm
  • Solar cycle

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