Global study of long term heart rhythm synchronization in groups

Abstract Heart rhythm measurements over time reflect important elements of Autonomic Nervous System dynamics. Synchronization among the heart rhythms of multiple participants has been observed, but this study uses the first global dataset collected that measures synchronization at several locations...

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Main Authors: Nachum Plonka, Mike Atkinson, Rollin McCraty, Germaine Cornelissen, A. Chase Turner, Minvydas Ragulskis, Alfonsas Vainoras
Format: Article
Language:English
Published: Nature Portfolio 2024-11-01
Series:Scientific Reports
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Online Access:https://doi.org/10.1038/s41598-024-79264-8
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author Nachum Plonka
Mike Atkinson
Rollin McCraty
Germaine Cornelissen
A. Chase Turner
Minvydas Ragulskis
Alfonsas Vainoras
author_facet Nachum Plonka
Mike Atkinson
Rollin McCraty
Germaine Cornelissen
A. Chase Turner
Minvydas Ragulskis
Alfonsas Vainoras
author_sort Nachum Plonka
collection DOAJ
description Abstract Heart rhythm measurements over time reflect important elements of Autonomic Nervous System dynamics. Synchronization among the heart rhythms of multiple participants has been observed, but this study uses the first global dataset collected that measures synchronization at several locations across the globe continuously for multiple weeks. For 15 days, 104 participants located in California (USA), Lithuania, Saudi Arabia, New Zealand, and England underwent continuous ambulatory heart rhythm monitoring. They were not instructed to perform tasks together. Significant long-term correlations were observed across participants within the same region, for just the groups in Saudi Arabia and New Zealand. This is surprising, given that each participant has an individualized life and distinct heart rate. In a different analysis using population-mean cosinor, only in these two locations was a significant circaseptan (about 7-day) rhythm observed. It appears that weekly rhythms in these groups partially contribute to correlations, in addition to long-term movements. A hypothesis with supporting evidence is proposed to explain this, that participants in these groups were socially closer than in the other groups. It would then appear that heart rhythms synchronize over the long term due to social connectedness, even when they are not physically near each other or performing tasks together.
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spelling doaj-art-c45d9c89045d4f34bfc59bdd40a0d2492025-08-20T02:22:20ZengNature PortfolioScientific Reports2045-23222024-11-0114111210.1038/s41598-024-79264-8Global study of long term heart rhythm synchronization in groupsNachum Plonka0Mike Atkinson1Rollin McCraty2Germaine Cornelissen3A. Chase Turner4Minvydas Ragulskis5Alfonsas Vainoras6The HeartMath InstituteThe HeartMath InstituteThe HeartMath InstituteHalberg Chronobiology Center, University of MinnesotaHalberg Chronobiology Center, University of MinnesotaFaculty of Mathematics and Natural Sciences, Kaunas University of TechnologyInstitute of Cardiology, Lithuanian University of Health SciencesAbstract Heart rhythm measurements over time reflect important elements of Autonomic Nervous System dynamics. Synchronization among the heart rhythms of multiple participants has been observed, but this study uses the first global dataset collected that measures synchronization at several locations across the globe continuously for multiple weeks. For 15 days, 104 participants located in California (USA), Lithuania, Saudi Arabia, New Zealand, and England underwent continuous ambulatory heart rhythm monitoring. They were not instructed to perform tasks together. Significant long-term correlations were observed across participants within the same region, for just the groups in Saudi Arabia and New Zealand. This is surprising, given that each participant has an individualized life and distinct heart rate. In a different analysis using population-mean cosinor, only in these two locations was a significant circaseptan (about 7-day) rhythm observed. It appears that weekly rhythms in these groups partially contribute to correlations, in addition to long-term movements. A hypothesis with supporting evidence is proposed to explain this, that participants in these groups were socially closer than in the other groups. It would then appear that heart rhythms synchronize over the long term due to social connectedness, even when they are not physically near each other or performing tasks together.https://doi.org/10.1038/s41598-024-79264-8Heart rate variabilityHRVAutonomic nervous systemSocial connectionSynchronizationCircaseptan (about 7-day) rhythm
spellingShingle Nachum Plonka
Mike Atkinson
Rollin McCraty
Germaine Cornelissen
A. Chase Turner
Minvydas Ragulskis
Alfonsas Vainoras
Global study of long term heart rhythm synchronization in groups
Scientific Reports
Heart rate variability
HRV
Autonomic nervous system
Social connection
Synchronization
Circaseptan (about 7-day) rhythm
title Global study of long term heart rhythm synchronization in groups
title_full Global study of long term heart rhythm synchronization in groups
title_fullStr Global study of long term heart rhythm synchronization in groups
title_full_unstemmed Global study of long term heart rhythm synchronization in groups
title_short Global study of long term heart rhythm synchronization in groups
title_sort global study of long term heart rhythm synchronization in groups
topic Heart rate variability
HRV
Autonomic nervous system
Social connection
Synchronization
Circaseptan (about 7-day) rhythm
url https://doi.org/10.1038/s41598-024-79264-8
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