Publications by authors named "Nadezda G Berdnikova"
Background: Through measurements of the heart rate variability (HRV) accompanied by the pertinent biomarker assays, the effects of nicotine and byproducts derived from alternative nicotine delivery systems (ANDS) on the autonomic nervous system (ANS) and hormonal system have been investigated.
Methods: HRV was studied in a group of volunteers (17 people), involving non-smokers, i.e.