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Nonlinear effects of winter swimming and sauna recreational activities on the heart rate variability

Potapov, Ilya; Haverinen, Samuli; Smolander, Juhani LU ; Viik, Jari and Räsänen, Esa (2017) In Computing in Cardiology 44. p.1-4
Abstract

Sauna sessions and winter swimming are traditional and popular recreational activities in certain countries. Their positive effects on health and relaxation, both as separate and combined activities, are commonly reported. However, systematic studies of these effects are relatively scarce, especially regarding the nonlinear analysis of the physiological measurements of the heart activity. We performed Multi-Scale Entropy (MSE) and Detrended Fluctuation (DFA) analyses on the inter-beat time series (about 72 h long) of 21 healthy volunteers studied in three distinct contexts: winter swimming combined with sauna bathing (W), sauna bathing alone (S), and control (C) with no related activities. We confirmed that the scaling exponents (DFA)... (More)

Sauna sessions and winter swimming are traditional and popular recreational activities in certain countries. Their positive effects on health and relaxation, both as separate and combined activities, are commonly reported. However, systematic studies of these effects are relatively scarce, especially regarding the nonlinear analysis of the physiological measurements of the heart activity. We performed Multi-Scale Entropy (MSE) and Detrended Fluctuation (DFA) analyses on the inter-beat time series (about 72 h long) of 21 healthy volunteers studied in three distinct contexts: winter swimming combined with sauna bathing (W), sauna bathing alone (S), and control (C) with no related activities. We confirmed that the scaling exponents (DFA) and complexity indices (determined from MSE) stay within the variation observed for healthy individuals as compared to public data sets. Next, we showed that S and W interventions have uncorrelated effects on the whole time series complexity in each individual. Additionally, the long-range scaling properties of S and W groups are not correlated as determined by DFA. Thus, we speculate that winter swimming combined with sauna bathing and sauna bathing alone might have different physiological responses.

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author
organization
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type
Contribution to journal
publication status
published
subject
in
Computing in Cardiology
volume
44
pages
4 pages
publisher
IEEE Computer Society
external identifiers
  • scopus:85045113213
ISSN
2325-8861
DOI
10.22489/CinC.2017.151-256
language
English
LU publication?
yes
id
d08ff2a9-d757-4ff6-ba60-4ef0c83bd2b8
date added to LUP
2018-04-17 08:07:33
date last changed
2019-02-20 11:14:21
@article{d08ff2a9-d757-4ff6-ba60-4ef0c83bd2b8,
  abstract     = {<p>Sauna sessions and winter swimming are traditional and popular recreational activities in certain countries. Their positive effects on health and relaxation, both as separate and combined activities, are commonly reported. However, systematic studies of these effects are relatively scarce, especially regarding the nonlinear analysis of the physiological measurements of the heart activity. We performed Multi-Scale Entropy (MSE) and Detrended Fluctuation (DFA) analyses on the inter-beat time series (about 72 h long) of 21 healthy volunteers studied in three distinct contexts: winter swimming combined with sauna bathing (W), sauna bathing alone (S), and control (C) with no related activities. We confirmed that the scaling exponents (DFA) and complexity indices (determined from MSE) stay within the variation observed for healthy individuals as compared to public data sets. Next, we showed that S and W interventions have uncorrelated effects on the whole time series complexity in each individual. Additionally, the long-range scaling properties of S and W groups are not correlated as determined by DFA. Thus, we speculate that winter swimming combined with sauna bathing and sauna bathing alone might have different physiological responses.</p>},
  author       = {Potapov, Ilya and Haverinen, Samuli and Smolander, Juhani and Viik, Jari and Räsänen, Esa},
  issn         = {2325-8861},
  language     = {eng},
  month        = {01},
  pages        = {1--4},
  publisher    = {IEEE Computer Society},
  series       = {Computing in Cardiology},
  title        = {Nonlinear effects of winter swimming and sauna recreational activities on the heart rate variability},
  url          = {http://dx.doi.org/10.22489/CinC.2017.151-256},
  volume       = {44},
  year         = {2017},
}