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Changes in heart rate variability among RF plastic sealer operators.
National Institute for Working Life, Umeå.
Umeå University, Faculty of Medicine, Radiation Sciences.
Umeå University, Faculty of Medicine, Surgical and Perioperative Sciences, Clinical Physiology.
Umeå University, Faculty of Medicine, Public Health and Clinical Medicine, Occupational and Environmental Medicine.
2007 (English)In: Bioelectromagnetics, ISSN 0197-8462, E-ISSN 1521-186X, Vol. 28, no 1, 76-79 p.Article in journal (Refereed) Published
Abstract [en]

In a previous study, we showed that operators of radiofrequency (RF) plastic sealers, RF operators (n = 35) had a lower heart rate during nighttime compared to a control group (n = 37). We have analyzed the heart rate variability (HRV) on the same group of people to better understand the possible underlying rhythm disturbances. We found a significantly increased total HRV and very low frequency (VLF) power during nighttime among the RF operators compared to a control group. Together with our previous finding of a significantly lower heart rate during nighttime among the RF operators compared to the controls, this finding indicates a relative increase in parasympathetic cardiac modulation in RF operators. This could in turn be due to an adaptation of the thermoregulatory system and the cardiac autonomic modulation to a long-term low-level thermal exposure in the RF operators.

Place, publisher, year, edition, pages
2007. Vol. 28, no 1, 76-79 p.
Keyword [en]
occupational exposure, radiofrequency fields, cardiovascular effects, thermo-regulation, HRV, autonomic nervous system
National Category
Medical and Health Sciences
Identifiers
URN: urn:nbn:se:umu:diva-32842DOI: 10.1002/bem.20276PubMedID: 17004240OAI: oai:DiVA.org:umu-32842DiVA: diva2:306262
Available from: 2010-03-29 Created: 2010-03-29 Last updated: 2010-04-08

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Wilén, JonnaWiklund, UrbanHörnsten, RolfSandström, Monica

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