Changes in heart rate variability among RF plastic sealer operators.
2007 (English)In: Bioelectromagnetics, ISSN 0197-8462, E-ISSN 1521-186X, Vol. 28, no 1, 76-79 p.Article in journal (Refereed) Published
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.
occupational exposure, radiofrequency fields, cardiovascular effects, thermo-regulation, HRV, autonomic nervous system
Medical and Health Sciences
IdentifiersURN: urn:nbn:se:umu:diva-32842DOI: 10.1002/bem.20276PubMedID: 17004240OAI: oai:DiVA.org:umu-32842DiVA: diva2:306262