scholarly journals Accuracy Assessment of Oura Ring Nocturnal Heart Rate and Heart Rate Variability in Comparison to Electrocardiography: A Comprehensive Analysis in Time and Frequency Domains (Preprint)

10.2196/27487 ◽  
2021 ◽  
Author(s):  
Rui Cao ◽  
Iman Azimi ◽  
Fatemeh Sarhaddi ◽  
Hannakaisa Niela-Vilen ◽  
Anna Axelin ◽  
...  
Keyword(s):  
Heart Rate ◽  
Heart Rate Variability ◽  
Accuracy Assessment ◽  
Comprehensive Analysis ◽  
Frequency Domains ◽  
Time And Frequency Domains

scholarly journals Heart rate variability in time and frequency domains: effects of gallopamil, nifedipine, and metoprolol compared with placebo.

Heart ◽  
1993 ◽  
Vol 70 (3) ◽  
pp. 252-258 ◽  
Author(s):  
M W Schweizer ◽  
J Brachmann ◽  
U Kirchner ◽  
I Walter-Sack ◽  
H Dickhaus ◽  
...  
Keyword(s):  
Heart Rate ◽  
Heart Rate Variability ◽  
Frequency Domains ◽  
Time And Frequency Domains

scholarly journals Chaos-related deterministic regulation of heart rate variability in time- and frequency domains: effects of autonomic blockade and exercise

1996 ◽  
Vol 31 (3) ◽  
pp. 410-418 ◽  
Author(s):  
I. Hagerman ◽  
M. Berglund ◽  
M. Lorin ◽  
J. Nowak ◽  
C. Sylven
Keyword(s):  
Heart Rate ◽  
Heart Rate Variability ◽  
Frequency Domains ◽  
Autonomic Blockade ◽  
Time And Frequency Domains

scholarly journals Comparison of the Polar S810i monitor and the ECG for the analysis of heart rate variability in the time and frequency domains

2008 ◽  
Vol 41 (10) ◽  
pp. 854-859 ◽  
Author(s):  
L.C.M. Vanderlei ◽  
R.A. Silva ◽  
C.M. Pastre ◽  
F.M. Azevedo ◽  
M.F. Godoy
Keyword(s):  
Heart Rate ◽  
Heart Rate Variability ◽  
Frequency Domains ◽  
Time And Frequency Domains

scholarly journals Analysis of heart rate variability in corn snakes (Pantherophis guttatus)

2021 ◽  
Vol 10 (11) ◽  
pp. e294101119781
Author(s):  
Antonio Gomes da Silva Neto ◽  
Daniel Souza Ferreira Magalhães ◽  
Raduan Hage ◽  
Laurita dos Santos ◽  
José Carlos Cogo
Keyword(s):  
Heart Rate ◽  
Heart Rate Variability ◽  
Nervous System ◽  
Autonomic Nervous System ◽  
Low Frequency ◽  
Autonomic Nervous ◽  
Rr Interval ◽  
Diagnosis And Prognosis ◽  
Frequency Domains ◽  
The Time Domain

The assessment of heart rate variability (HRV) by linear methods in conjunction with Poincaré plots can be useful for evaluating cardiac regulation by the autonomic nervous system and for the diagnosis and prognosis of heart disease in snakes. In this report, we describe an analysis of HRV in conscious adult corn snakes Pantherophis guttatus (P. guttatus).  The electrocardiogram (ECG) parameters were determined in adult corn snakes (8 females, 13 males) and used for HRV analysis, and the RR interval was analyzed by linear methods in the time and frequency domains. There was no sex-related difference in heart rate. However, significant differences were seen in the duration of the P, PR, and T waves and QRS complex; there was no difference in the QT interval. The values for the RR interval varied by 15.3% and 18.8% in male and female snakes, respectively, and there was considerable variation in the values for the high and low frequency domains. The changes in the time domain were attributed to regulation by the parasympathetic branch of the autonomic nervous system, in agreement with variations in the high and low frequency domains. The values for standard deviations 1 and 2 in Poincaré plots, as well as the values of the frequency domain, provide useful parameters for future studies of cardiac function in P. guttatus.

scholarly journals An Evaluation of Heart Rate Variability in Female Youth Soccer Players Following Soccer Heading: A Pilot Study

Sports ◽  
2019 ◽  
Vol 7 (11) ◽  
pp. 229 ◽  
Author(s):  
Alexandra B. Harriss ◽  
Kolten Abbott ◽  
Kurt Kimpinski ◽  
Jeffrey D. Holmes ◽  
Andrew M. Johnson ◽  
...  
Keyword(s):  
Heart Rate ◽  
Heart Rate Variability ◽  
Pilot Study ◽  
Autonomic Function ◽  
Low Frequency ◽  
Neurological Impairment ◽  
Youth Soccer ◽  
Head Impacts ◽  
Frequency Domains ◽  
Soccer Heading

Most head impacts in soccer occur from purposeful heading; however, the link between heading and neurological impairment is unknown. Previous work suggests concussion may result in an uncoupling between the autonomic nervous system and cardiovascular system. Accordingly, heart rate variability (HRV) may be a sensitive measure to provide meaningful information regarding repetitive heading in soccer. The purpose of this pilot study assesses the feasibility of measuring HRV to evaluate autonomic function following soccer heading. Sixteen youth female participants underwent heart rate monitoring during a heading and footing condition. Participants completed a five minute resting supine trial at the start and end of each testing session. Standard 450 g soccer balls were projected at 6 m/s towards participants. Participants performed five headers, for the header condition, and five footers for the footer condition. The HRV for resting supine trials, pre- and post-header and footer conditions were assessed for both time and frequency domains. HRV effect sizes were small when comparing conditions, except absolute low frequency (d = 0.61) and standard deviation of the normal-normal (NN) intervals (d = 0.63). Participant retention and adherence were high, without adverse events. Findings suggest HRV is a feasible measure for evaluating the effects of heading on autonomic function.

Heart rate variability analysis in patients with a stable coronary heart disease. Analysis using novel methods in combined time-frequency domains

2007 ◽  
Vol 40 (4) ◽  
pp. S43
Author(s):  
Katarzyna Torzynska ◽  
Alina Janowska-Kulinska ◽  
Alina Markiewicz-Grochowalska ◽  
Olga Jerzykowska ◽  
Anna Sowinska ◽  
...  
Keyword(s):  
Heart Rate ◽  
Coronary Heart Disease ◽  
Heart Rate Variability ◽  
Heart Disease ◽  
Heart Rate Variability Analysis ◽  
Time Frequency ◽  
Variability Analysis ◽  
Stable Coronary Heart Disease ◽  
Frequency Domains ◽  
Disease Analysis

scholarly journals Heart Rate Variability Duration: Expanding the Ability of Wearable Technology to Improve Outpatient Monitoring?

2021 ◽  
Vol 12 ◽  
Author(s):  
David C. Sheridan ◽  
Karyssa N. Domingo ◽  
Ryan Dehart ◽  
Steven D. Baker
Keyword(s):  
Mental Health ◽  
Heart Rate ◽  
Heart Rate Variability ◽  
Time Windows ◽  
Low Frequency ◽  
Frequency Component ◽  
Wearable Technology ◽  
Mental Health Research ◽  
High Frequency Component ◽  
Frequency Domains

Heart rate variability (HRV) evaluates beat-to-beat interval (BBI) differences and is a suggested marker of the autonomic nervous system with diagnostic/monitoring capabilities in mental health; especially parasympathetic measures. The standard duration for short-term HRV analysis ranges from 24 h down to 5-min. However, wearable technology, mainly wrist devices, have large amounts of motion at times resulting in need for shorter duration of monitoring. The objective of this study was to evaluate the correlation between 1 and 5 min segments of continuous HRV data collected simultaneously on the same patient. Subjects wore a patch electrocardiograph (Cardea Solo, Inc.) over a 1–7 day period. For every consecutive hour the patch was worn, we selected a 5-min, artifact-free electrocardiogram segment. HRV metric calculation was performed to the entire 5-min segment and the first 1-min from this same 5-min segment. There were 492 h of electrocardiogram data collected allowing calculation of 492 5 min and 1 min segments. 1 min segments of data showed good correlation to 5 min segments in both time and frequency domains: root mean square of successive difference (RMSSD) (R = 0.92), high frequency component (HF) (R = 0.90), low frequency component (LF) (R = 0.71), and standard deviation of NN intervals (SDNN) (R = 0.63). Mental health research focused on parasympathetic HRV metrics, HF and RMSSD, may be accomplished through smaller time windows of recording, making wearable technology possible for monitoring.

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