Case Studies Of The Effect Of The TESLAR® Watch On The Autonomic Nervous System As Measured By Heart Rate Variability (HRV) [March 2003].

Dr Nyjon Eccles PhD MRCP
The Chiron Clinic, Harley Street, London, UK

Objectives

  1. To study the influence of TESLAR® on HRV at rest
  2. To study the influence of TESLAR® on mobile phone-induced perturbations of HRV

Methods
HRV was assessed using the Stresserve Time Domain-based system and the Nerve Express System (Time Domain and spectral analysis of HRV). A single chip and a double chip watch were applied to 2 subjects (both females in their 30s) after measuring their baseline HRV. This measurement was then repeated at 3 day intervals over a period of 15 days to observe the effect on each individuals unchallenged autonomic nervous system balance.

HRV was also assessed in the same individuals exposed to a live mobile phone with and without a TESLAR® watch applied to their left wrist.

Results
Baseline HRV in both subjects was reasonably good and did not appear to alter significantly whilst wearing the TESLAR® watches after 2 weeks. Both subjects reported increased sense of well-being and Subject 1 reported a distinct improvement in sleep quality.

Introducing a mobile phone caused reduced parasympathetic activity in subject 1 and reduced sympathetic and increased parasympathetic activity in Subject 2 (this subject unlike the other displayed no autonomic reaction to postural challenge while the first subject had a rise in sympathetic and a reduction in parasympathetic activity). The same subjects with mobile phone exposure but with a TESLAR® in situ both displayed different reactions. Subject 1 had a shift to increased parasympathetic activity with the 2 coil watch. Subject 2 with a single TESLAR® coil, had a slight reduction in parasympathetic activity but no change in sympathetic activity.

Conclusions
Taken together these results did not show an effect of TESLAR® on baseline HRV readings over a 2 week period. However, because both subjects had a reasonably balanced HRV to begin with, this may have masked any positive effect of the TESLAR®. When the autonomic nervous system was stressed by exposure to a mobile phone the TESLAR® appeared to have a stabilizing effect in one subject and beneficial stimulation of parasympathetic regulatory system activity in the other. Whilst this is only a case study it confirms the findings of other earlier research suggesting a protective effect of TESLAR® on autonomic nervous system perturbation created by an ambient electromagnetic field as from a mobile phone.

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