SDNN/RMSSD as a Surrogate for LF/HF: A Revised Investigation

Thousands of papers involved in heart rate variability (HRV). However, little was known about one important measure of HRV, the root mean square of successive heartbeat interval differences (RMSSDs). Another fundamental measure SDNN indicates standard deviation of normal to normal R-R intervals, whe...

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Main Authors: Hui-Min Wang, Sheng-Chieh Huang
Format: Article
Language:English
Published: Wiley 2012-01-01
Series:Modelling and Simulation in Engineering
Online Access:http://dx.doi.org/10.1155/2012/931943
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author Hui-Min Wang
Sheng-Chieh Huang
author_facet Hui-Min Wang
Sheng-Chieh Huang
author_sort Hui-Min Wang
collection DOAJ
description Thousands of papers involved in heart rate variability (HRV). However, little was known about one important measure of HRV, the root mean square of successive heartbeat interval differences (RMSSDs). Another fundamental measure SDNN indicates standard deviation of normal to normal R-R intervals, where R is the peak of a QRS complex (heartbeat). Compared with SDNN, RMSSD is a short-term variation of heart rate. Through a time-frequency transformation, the ratio of low- and high-frequency power LF/HF represents the sympatho-vagal balance of the autonomic nervous system (ANS). Some research claimed that SDNN/RMSSD was a good surrogate for LF/HF. However, only two special cases supported this hypothesis in the literature survey. The first happened in resting supine state and the other was a group of prefrontal cortex patients. Both of their Pearson correlation coefficients reached 0.90, a reasonable criterion. In our study, a 6-week experiment was performed with 32 healthy young Asian males. The Pearson correlation coefficients had a normal distribution with average values smaller than 0.6 for 3 and 5-minute epochs, respectively. Our findings suggest this surrogate aspect could remain as a hypothesis.
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spelling doaj-art-bcd15bc009664ded86a5f46788404f202025-02-03T06:08:22ZengWileyModelling and Simulation in Engineering1687-55911687-56052012-01-01201210.1155/2012/931943931943SDNN/RMSSD as a Surrogate for LF/HF: A Revised InvestigationHui-Min Wang0Sheng-Chieh Huang1Department of Electrical Engineering, National Chiao Tung University, Hsinchu 30010, TaiwanDepartment of Electrical Engineering, National Chiao Tung University, Hsinchu 30010, TaiwanThousands of papers involved in heart rate variability (HRV). However, little was known about one important measure of HRV, the root mean square of successive heartbeat interval differences (RMSSDs). Another fundamental measure SDNN indicates standard deviation of normal to normal R-R intervals, where R is the peak of a QRS complex (heartbeat). Compared with SDNN, RMSSD is a short-term variation of heart rate. Through a time-frequency transformation, the ratio of low- and high-frequency power LF/HF represents the sympatho-vagal balance of the autonomic nervous system (ANS). Some research claimed that SDNN/RMSSD was a good surrogate for LF/HF. However, only two special cases supported this hypothesis in the literature survey. The first happened in resting supine state and the other was a group of prefrontal cortex patients. Both of their Pearson correlation coefficients reached 0.90, a reasonable criterion. In our study, a 6-week experiment was performed with 32 healthy young Asian males. The Pearson correlation coefficients had a normal distribution with average values smaller than 0.6 for 3 and 5-minute epochs, respectively. Our findings suggest this surrogate aspect could remain as a hypothesis.http://dx.doi.org/10.1155/2012/931943
spellingShingle Hui-Min Wang
Sheng-Chieh Huang
SDNN/RMSSD as a Surrogate for LF/HF: A Revised Investigation
Modelling and Simulation in Engineering
title SDNN/RMSSD as a Surrogate for LF/HF: A Revised Investigation
title_full SDNN/RMSSD as a Surrogate for LF/HF: A Revised Investigation
title_fullStr SDNN/RMSSD as a Surrogate for LF/HF: A Revised Investigation
title_full_unstemmed SDNN/RMSSD as a Surrogate for LF/HF: A Revised Investigation
title_short SDNN/RMSSD as a Surrogate for LF/HF: A Revised Investigation
title_sort sdnn rmssd as a surrogate for lf hf a revised investigation
url http://dx.doi.org/10.1155/2012/931943
work_keys_str_mv AT huiminwang sdnnrmssdasasurrogateforlfhfarevisedinvestigation
AT shengchiehhuang sdnnrmssdasasurrogateforlfhfarevisedinvestigation