Rules of Heliogeomagnetics Diversely Coordinating Biological Rhythms and Promoting Human Health
This investigation reviews how geomagnetic activity affects the circadian variation in blood pressure (BP) and heart rate (HR) and their variabilities of clinically healthy individuals. A small study in Alta, Norway (latitude of 70.0° N), serves to illustrate the methodology used to outline rules of...
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MDPI AG
2023-01-01
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| Series: | Applied Sciences |
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| Online Access: | https://www.mdpi.com/2076-3417/13/2/951 |
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| author | Kuniaki Otsuka Germaine Cornelissen Andi Weydahl Denis Gubin Larry A. Beaty Masatoshi Murase |
| author_facet | Kuniaki Otsuka Germaine Cornelissen Andi Weydahl Denis Gubin Larry A. Beaty Masatoshi Murase |
| author_sort | Kuniaki Otsuka |
| collection | DOAJ |
| description | This investigation reviews how geomagnetic activity affects the circadian variation in blood pressure (BP) and heart rate (HR) and their variabilities of clinically healthy individuals. A small study in Alta, Norway (latitude of 70.0° N), serves to illustrate the methodology used to outline rules of procedure in exploring heliogeomagnetic effects on human physiology. Volunteers in the Alta study were monitored for at least 2 days between 18 March 2002 and 9 January 2005. Estimates of the circadian characteristics of BP and HR by cosinor and the Maximum Entropy Method (MEM) indicate an increase in the circadian amplitude of systolic (S) BP on geomagnetic-disturbance days compared to quiet days (<i>p</i> = 0.0236). Geomagnetic stimulation was found to be circadian-phase dependent, with stimulation in the evening inducing a 49.2% increase in the circadian amplitude of SBP (<i>p</i> = 0.0003), not observed in relation to stimulation in the morning. In two participants monitored for 7 days, the circadian amplitude of SBP decreased by 23.4% on an extremely disturbed day but increased by 50.3% on moderately disturbed days (<i>p</i> = 0.0044), suggesting a biphasic (hormetic) reaction of the circadian SBP rhythm to geomagnetics. These results indicate a possible role of geomagnetic fluctuations in modulating the circadian system. |
| first_indexed | 2024-03-09T13:43:05Z |
| format | Article |
| id | doaj.art-3996a9f5c5194b7db3100da8a7dd2dab |
| institution | Directory Open Access Journal |
| issn | 2076-3417 |
| language | English |
| last_indexed | 2024-03-09T13:43:05Z |
| publishDate | 2023-01-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Applied Sciences |
| spelling | doaj.art-3996a9f5c5194b7db3100da8a7dd2dab2023-11-30T21:04:03ZengMDPI AGApplied Sciences2076-34172023-01-0113295110.3390/app13020951Rules of Heliogeomagnetics Diversely Coordinating Biological Rhythms and Promoting Human HealthKuniaki Otsuka0Germaine Cornelissen1Andi Weydahl2Denis Gubin3Larry A. Beaty4Masatoshi Murase5Tokyo Women’s Medical University, Tokyo 162-8666, JapanHalberg Chronobiology Center, University of Minnesota, Minneapolis, MN 55455, USASchool of Sport Sciences, The Arctic University of Norway, Campus Alta, N-9509 Alta, NorwayLaboratory for Chronobiology and Chronomedicine, Research Institute of Biomedicine and Biomedical Technologies, Medical University, 625023 Tyumen, RussiaHalberg Chronobiology Center, University of Minnesota, Minneapolis, MN 55455, USAYukawa Institute for Theoretical Physics, Kyoto University, Kyoto 606-8502, JapanThis investigation reviews how geomagnetic activity affects the circadian variation in blood pressure (BP) and heart rate (HR) and their variabilities of clinically healthy individuals. A small study in Alta, Norway (latitude of 70.0° N), serves to illustrate the methodology used to outline rules of procedure in exploring heliogeomagnetic effects on human physiology. Volunteers in the Alta study were monitored for at least 2 days between 18 March 2002 and 9 January 2005. Estimates of the circadian characteristics of BP and HR by cosinor and the Maximum Entropy Method (MEM) indicate an increase in the circadian amplitude of systolic (S) BP on geomagnetic-disturbance days compared to quiet days (<i>p</i> = 0.0236). Geomagnetic stimulation was found to be circadian-phase dependent, with stimulation in the evening inducing a 49.2% increase in the circadian amplitude of SBP (<i>p</i> = 0.0003), not observed in relation to stimulation in the morning. In two participants monitored for 7 days, the circadian amplitude of SBP decreased by 23.4% on an extremely disturbed day but increased by 50.3% on moderately disturbed days (<i>p</i> = 0.0044), suggesting a biphasic (hormetic) reaction of the circadian SBP rhythm to geomagnetics. These results indicate a possible role of geomagnetic fluctuations in modulating the circadian system.https://www.mdpi.com/2076-3417/13/2/951ambulatory blood-pressure monitoringcardiovascular circadian rhythmcircadian amplitudecircadian acrophasecircasemidian (about 12 h) rhythmbell-shaped dose-response |
| spellingShingle | Kuniaki Otsuka Germaine Cornelissen Andi Weydahl Denis Gubin Larry A. Beaty Masatoshi Murase Rules of Heliogeomagnetics Diversely Coordinating Biological Rhythms and Promoting Human Health Applied Sciences ambulatory blood-pressure monitoring cardiovascular circadian rhythm circadian amplitude circadian acrophase circasemidian (about 12 h) rhythm bell-shaped dose-response |
| title | Rules of Heliogeomagnetics Diversely Coordinating Biological Rhythms and Promoting Human Health |
| title_full | Rules of Heliogeomagnetics Diversely Coordinating Biological Rhythms and Promoting Human Health |
| title_fullStr | Rules of Heliogeomagnetics Diversely Coordinating Biological Rhythms and Promoting Human Health |
| title_full_unstemmed | Rules of Heliogeomagnetics Diversely Coordinating Biological Rhythms and Promoting Human Health |
| title_short | Rules of Heliogeomagnetics Diversely Coordinating Biological Rhythms and Promoting Human Health |
| title_sort | rules of heliogeomagnetics diversely coordinating biological rhythms and promoting human health |
| topic | ambulatory blood-pressure monitoring cardiovascular circadian rhythm circadian amplitude circadian acrophase circasemidian (about 12 h) rhythm bell-shaped dose-response |
| url | https://www.mdpi.com/2076-3417/13/2/951 |
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