Key result
Mobile phone radiation close to the chest versus the head resulted in measurable but clinically insignificant differences in heart rate variability parameters among healthy male volunteers.
Why the study?
Does mobile phone radiation affect heart rate variability in healthy male volunteers?
Observational (n=14)
Does mobile phone radiation affect heart rate variability in healthy male volunteers?
Mobile phone radiation does not have a clinically significant pathological effect on heart rate variability in healthy volunteers.
Answers are grounded in this paper and cite their sources.
No clinically significant HRV effects from mobile phone radiation in healthy men; leaves open questions on vulnerable populations or chronic exposure.
Mobile phones (MPs) progressed from a tool of the privileged few to a gadget for the masses. However, the physical effects, which enable wireless information transmission, did not change; MP technology still relies on pulsed high-frequency electromagnetic (EM) fields. Therefore, the health risks, associated with EM fields, remain. Studies that investigated these health risks have reported dizziness, numbness in the thigh, and heaviness in the chest. This study investigates neurological effects that are caused by EM fields radiated from MPs. The heart rate variability (HRV) can be used as a measure for these neurological effects, because the automated nervous system modulates the HRV. We measured the HRV of 14 healthy male volunteers. We used the following nonlinear parameters to quantify the MP radiation effects on HRV: approximate entropy (ApEn), capacity dimension (CaD), correlation dimension (CD), fractal dimension (FD), Hurst exponent (H), and the largest Lyapunov exponent (LLE). The results indicate that there is a measurable difference in the parameter values when the MP is kept close to the chest and when it is kept close to the head. However, these differences are very small and statistical analysis showed that they have no clinical significance. Furthermore, the result analysis does not show a consistent trend, which indicates that there is no underlying pathological effect.
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Faust et al. (2011) conducted an observational in Healthy (n=14). Mobile phone radiation vs. Different body locations (chest vs head) was evaluated on Heart rate variability (HRV) measured by nonlinear parameters. Mobile phone radiation close to the chest versus the head resulted in measurable but clinically insignificant differences in heart rate variability parameters among healthy male volunteers.
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