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Biomedical Engineering / Biomedizinische Technik

Joint Journal of the German Society for Biomedical Engineering in VDE and the Austrian and Swiss Societies for Biomedical Engineering and the German Society of Biomaterials

Editor-in-Chief: Dössel, Olaf

Editorial Board: Augat, Peter / Habibović, Pamela / Haueisen, Jens / Jahnen-Dechent, Wilhelm / Jockenhoevel, Stefan / Knaup-Gregori, Petra / Lenarz, Thomas / Leonhardt, Steffen / Plank, Gernot / Radermacher, Klaus M. / Schkommodau, Erik / Stieglitz, Thomas / Boenick, Ulrich / Jaramaz, Branislav / Kraft, Marc / Lenthe, Harry / Lo, Benny / Mainardi, Luca / Micera, Silvestro / Penzel, Thomas / Robitzki, Andrea A. / Schaeffter, Tobias / Snedeker, Jess G. / Sörnmo, Leif / Sugano, Nobuhiko / Werner, Jürgen /

IMPACT FACTOR 2018: 1.007
5-year IMPACT FACTOR: 1.390

CiteScore 2018: 1.24

SCImago Journal Rank (SJR) 2018: 0.282
Source Normalized Impact per Paper (SNIP) 2018: 0.831

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Volume 51, Issue 4


Volume 57 (2012)

Revisiting the potential of time-domain indexes in short-term HRV analysis

Rita Balocchi / Federico Cantini / Maurizio Varanini / Gianfranco Raimondi / Jacopo M. Legramante / Alberto Macerata
Published Online: 2006-10-25 | DOI: https://doi.org/10.1515/BMT.2006.034


In the context of HRV analysis, we evaluated the information content of two measures that can easily be derived from the classical RR time-domain indexes. The two measures are: 1) the ratio sd/rmssd, where sd is the RR standard deviation and rmssd is the root mean square of squared differences of consecutive RR beats; and 2) the ratio sd2/sd1, where sd2 and sd1 are extracted from the Poincaré plot and represent the transversal and longitudinal dispersion of the cloud of points (RRi ,RRi +1). We compared the performance of the two measures with that of the classical LF/HF ratio in a group of healthy subjects who underwent a 70° upright tilt test. The goodness of the results obtained by the two measures, the simplicity of their calculation and their applicability free from a priori assumptions on the characteristics of the data are proposed to the attention of the community involved in the HRV analysis as a possible alternative to the LF/HF ratio.

Keywords: cardiac sympathetic index; heart rate variability; LF/HF; Poincaré plot

About the article

Corresponding author: Rita Balocchi, Institute of Clinical Physiology, CNR Research Area, via Moruzzi 1, 56100 Pisa, Italy Phone: +39-050-3152415 Fax: +39-050-3152311

Published Online: 2006-10-25

Published in Print: 2006-10-01

Citation Information: Biomedizinische Technik, Volume 51, Issue 4, Pages 190–193, ISSN (Online) 1862-278X, ISSN (Print) 0013-5585, DOI: https://doi.org/10.1515/BMT.2006.034.

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