Why the study?
Do extremely low-frequency twisted magnetic fields control the autonomic nervous system in healthy male subjects?
Do extremely low-frequency twisted magnetic fields control the autonomic nervous system in healthy male subjects?
Extremely low-frequency twisted magnetic fields may influence the autonomic nervous system as measured by heart rate variability in a small sample of healthy men.
May modulate autonomic blood-flow control in healthy adults; leaves open therapeutic potential pending larger controlled trials.
In this paper, we investigated the magnetohydrodynamic effects of extremely low-frequency fields produced by a prototype diverted from an existing alternating magnetic therapy apparatus (AMTA). Diverting the use of a commercial AMTA, we prepared a prototype equipped with two additional coils for twisting the magnetic field of the apparatus. Five healthy male subjects ranging in age from 33 to 68 (two subjects each in their 30s and 40s, and one subject in his 60s) took part in this experiment. The heart beat fluctuation index [LF/HF: low frequency (LF) and high frequency (HF)] was measured with a prefrontal probe every 0.1 s during functional near-infrared spectroscopic (fNIRS) measurement sessions. Our experimental results showed the fact that the proper twisted magnetic fields induced from the prototyped machine were able to control the autonomic nervous system, judging from the LF/HF indexes on fNIRS measurements.
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Nakagawa et al. (2018) studied this question.
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