P53Using portable recorder of R-R intervals (heart monitor “Wrist Watch”) in the epidemiologic study for the estimation of heart rate variability
Section snippets
Background
The aim of the study was to evaluate the possibility of using portative “wrist watch” recorder of R-R intervals for the estimation of heart rate variability.
Methods
The study is a part of the pilot project “Stress and siege-effects on biomarkers of health in aging men and women of St Petersburg,” which was conducted in 2008 to 2009 within the framework of the international survey “Stress, Aging and Health in Russia.” Two hundred participants of the study were randomly selected from the population of St Petersburg, 162 of them were monitored during 24 hours for both Holter monitor and the portable “wrist watch.” In both cases, we analyzed exported files of
Results
Of the total of 162 heart monitor recordings, 28 recordings with the length shorter than 18 hours were excluded from the further analysis. Eighty-nine of the remaining 134 recordings were taken for comparison with the corresponding Holter data. No significant differences were found between the average heart rate values (day, night, 24 hours). The original heart monitor series were too shaky, and we had to filter and smooth them before computation of the heart rate variability parameters. The
Conclusion
The portable Wrist Watch (WW) recorders can be potentially used in studies of HR. Some of the time-domain HRV parameters such as SDNN, SDANN, and mean NN can be also estimated from the filtered and smoothed WW recordings. The WW device should be further improved for 24-hour-long recordings.