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- Carlberg, Michael, et al.
(författare)
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Case-Control Study on Occupational Exposure to Extremely Low-Frequency Electromagnetic Fields and the Association with Meningioma
- 2018
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Ingår i: BioMed Research International. - : Hindawi Limited. - 2314-6133 .- 2314-6141.
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Tidskriftsartikel (refereegranskat)abstract
- Objective. Exposure to extremely low-frequency electromagnetic fields (ELF-EMF) was in 2002 classified as a possible human carcinogen, Group 2B, by the International Agency for Research on Cancer at WHO based on an increased risk for childhood leukemia. In case-control studies on brain tumors during 1997-2003 and 2007-2009 we assessed lifetime occupations in addition to exposure to different agents. The INTEROCC ELF-EMF Job-ExposureMatrix was used for associating occupations with ELF-EMF exposure (mu T) with meningioma. Cumulative exposure (mu T-years), average exposure (mu T), and maximum exposed job (mu T) were calculated. Results. No increased risk for meningioma was found in any category. For cumulative exposure in the highest exposure category 8.52+ mu T years odds ratio (OR) = 0.9, 95% confidence interval (CI) = 0.7-1.2, and.. linear trend = 0.45 were calculated. No statistically significant risks were found in different time windows. Conclusion. In conclusion occupational ELF-EMF was not associated with an increased risk for meningioma.
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| 2. |
- Koppel, Tarmo, et al.
(författare)
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50 Hz magnetic field affects heart rate variability - An experimental study
- 2018
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Ingår i: EMF-Med 2018 - 1st EMF-Med World Conference on Biomedical Applications of Electromagnetic Fields and COST EMF-MED Final Event with 6th MCM. - : IEEE. - 9789532900798
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Konferensbidrag (refereegranskat)abstract
- This study exposed subjects (N=108) to 50 Hz sinusoidal magnetic field at 4 μT. The test was done under blind test conditions, consisting of five stages, including control and exposure stages, each lasting for two minutes. The exposure took place in two stages. The results show, the average heart rate increased due course of the test (p=0.003). In addition, the total power of the heart rate variability (HRV) was statistically significantly lower during exposure stages than control stages. High frequency component of HRV decreases due course of the entire test (p = 0.014).
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