Heart Rate Asymmetry Analysis Using Poincaré Plot

2013 ◽  
pp. 69-91
Author(s):  
Ahsan Habib Khandoker ◽  
Chandan Karmakar ◽  
Michael Brennan ◽  
Andreas Voss ◽  
Marimuthu Palaniswami
Keyword(s):  
Heart Rate ◽  
Poincaré Plot ◽  
Asymmetry Analysis ◽  
Rate Asymmetry ◽  
Heart Rate Asymmetry

Impacts of reference points and reference lines on the slope- and area-based heart rate asymmetry analysis

Measurement ◽  
2019 ◽  
Vol 137 ◽  
pp. 515-526
Author(s):  
Chang Yan ◽  
Peng Li ◽  
Lianke Yao ◽  
Chandan Karmakar ◽  
Changchun Liu
Keyword(s):  
Heart Rate ◽  
Reference Points ◽  
Asymmetry Analysis ◽  
Rate Asymmetry ◽  
Heart Rate Asymmetry

scholarly journals Short-term recovery of heart rate variability and its relationship with blood pressure after different intensity treadmill exercise

2020 ◽  
Author(s):  
Liang Wu ◽  
Ping Shi ◽  
Jiang Shao ◽  
Anan Li ◽  
Hongliu Yu ◽  
...  
Keyword(s):  
Blood Pressure ◽  
Heart Rate ◽  
Heart Rate Variability ◽  
Treadmill Exercise ◽  
Recovery Period ◽  
Short Term ◽  
Poincaré Plot ◽  
Time Frequency ◽  
Rate Asymmetry ◽  
Heart Rate Asymmetry

Abstract Background : Heart rate variability (HRV) provides an opportunity to capture the tiny but early signs that may predict the future cardiovascular risk in healthy individuals and further, helps understand how well the cardiovascular autonomic system works. Aims of this study were to elucidate short-term recovery of HRV and its relationship with blood pressure recovery after different intensity treadmill exercise. Methods : Fifteen healthy participants performed four different conditions (REST; speed 6km/h; speed 8km/h; speed 10km/h), systolic and diastolic blood pressure per 30s (SBP, DBP) and 5-mins consecutive heart beats intervals were measured after each trial. Autonomic nervous regulation was evaluated using HRV time-frequency domain indices and heart rate asymmetry (HRA) indices. Each index was calculated using 5 mins electrocardiogram (ECG) series and consecutive 30-s windows in 5 mins. Results : the vagally related indices (RMSSD, pNN50 and HF) decreased and the indices representing overall variability (SDNN, LF) had different trends as intensity increasing. The sympathetic-vagal balance parameter LF/HF increased, too. HRV indices had strong correlations with DBP but weak with SBP. Meanwhile, heart rate asymmetry vanished after each trial. Conclusions : The findings suggested a vagal withdrawal as soon as the end of treadmill exercise. It could be concluded that sympathetic modulation was stronger as intensity increasing. During recovery period, DBP was mediated by vagal activation and sympathetic withdrawal. The diminished asymmetry in Poincaré plot was the result of sympathetic acceleration and vagal reduction.

scholarly journals The effect of passive lower limb training on heart rate asymmetry

2020 ◽  
Author(s):  
Liang Wu ◽  
Ping Shi ◽  
Anan Li ◽  
Honglliu Yu ◽  
Yang Liu
Keyword(s):  
Heart Rate ◽  
Heart Rate Variability ◽  
Lower Limb ◽  
Automatic Regulation ◽  
Training Methods ◽  
Poincaré Plot ◽  
Rr Intervals ◽  
Rate Asymmetry ◽  
Heart Rate Asymmetry ◽  
Healthy Participants

Abstract Background: Heart rate asymmetry (HRA) is an approach for quantitatively assessing the uneven distribution points of RR intervals of sinus rhythm. We aimed to investigate whether the automatic regulation lead to HRA alternation during passive lower limb training. Methods : Several variance-based HRA variables derived from Poincaré plot were established. Thirty healthy participants were recruited in this study. The protocol included baseline (Pre-E) and three passive lower limb training trials (E1, E2 and E3) with a randomized order. Heart rate variability (HRV) frequency-domain parameters (LF (n.u.), HF (n.u.) and VLF (ms 2 )) and HRA variables (SD1a, SD1d, SD2a, SD2d, SDNNa and SDNNd) were calculated by using 5-min RR time series. Results : Our results showed that the performance of HRA distinguished. The HRA was observed with significant changes in E1, E2 and E3 compared to Pre -E. Moreover, HRA variables correlated with HRV parameters in all trials, which indicated that HRA might benefit in assessing autonomic alteration in passive lower limb trainings. Conclusions: In summary, this study suggested that passive training led to significant HRA alternation and the application of HRA gave us the possibility for autonomic assessment.

scholarly journals Attention Deficit/Hyperactivity Disorder (ADHD) Is Associated With Altered Heart Rate Asymmetry

2014 ◽  
pp. S509-S519 ◽  
Author(s):  
I. TONHAJZEROVÁ ◽  
I. ONDREJKA ◽  
I. FARSKÝ ◽  
Z. VIŠŇOVCOVÁ ◽  
M. MEŠŤANÍK ◽  
...  
Keyword(s):  
Heart Rate ◽  
Attention Deficit Hyperactivity Disorder ◽  
Attention Deficit ◽  
Physiological Stress ◽  
Regulatory System ◽  
Adverse Outcomes ◽  
Time Asymmetry ◽  
Hyperactivity Disorder ◽  
Rate Asymmetry ◽  
Heart Rate Asymmetry

Attention deficit/hyperactivity disorder (ADHD) is associated with complex neurocardiac integrity. We aimed to study heart rate time asymmetry as a nonlinear qualitative feature of heart rate variability indicating complexity of cardiac autonomic control at rest and in response to physiological stress (orthostasis) in children suffering from ADHD. Twenty boys with ADHD and 20 healthy age-matched boys at the age of 8 to 12 years were examined. The continuous ECG was recorded in a supine position and during postural change from lying to standing (orthostasis). Time irreversibility indices – Porta’s (P%), Guzik’s (G%) and Ehlers’ (E) – were evaluated. Our analysis showed significantly reduced heart rate asymmetry indices at rest (P%: 49.8 % vs. 52.2 %; G%: 50.2 % vs. 53.2 %; p<0.02), and in response to orthostatic load (P%: 52.4 % vs. 54.5 %, G%: 52.3 % vs. 54.5 %; p<0.05) associated with tachycardia in ADHD children compared to controls. Concluding, our study firstly revealed the altered heart rate asymmetry pattern in children suffering from ADHD at rest as well as in response to posture change from lying to standing (orthostasis). These findings might reflect an abnormal complex cardiac regulatory system as a potential mechanism leading to later cardiac adverse outcomes in ADHD.

Heart rate asymmetry by Poincaré plots of RR intervals

2006 ◽  
Vol 51 (4) ◽  
pp. 272-275 ◽  
Author(s):  
Przemyslaw Guzik ◽  
Jaroslaw Piskorski ◽  
Tomasz Krauze ◽  
Andrzej Wykretowicz ◽  
Henryk Wysocki
Keyword(s):  
Heart Rate ◽  
Rr Intervals ◽  
Rate Asymmetry ◽  
Heart Rate Asymmetry

Obstructive sleep apnea and heart rate asymmetry microstructure during sleep

2013 ◽  
Vol 23 (2) ◽  
pp. 91-100 ◽  
Author(s):  
Przemyslaw Guzik ◽  
Jaroslaw Piskorski ◽  
Kokab Awan ◽  
Tomasz Krauze ◽  
Michael Fitzpatrick ◽  
...  
Keyword(s):  
Heart Rate ◽  
Obstructive Sleep Apnea ◽  
Sleep Apnea ◽  
Rate Asymmetry ◽  
Obstructive Sleep ◽  
Heart Rate Asymmetry

scholarly journals Heart Rate Asymmetry in Response to Colored Light

2017 ◽  
Author(s):  
Saman Parvaneh ◽  
Nader Jafarnia Dabanloo ◽  
Shahab Rezaei ◽  
Sadaf Moharreri ◽  
Nima Toosizadeh
Keyword(s):  
Heart Rate ◽  
Rate Asymmetry ◽  
Heart Rate Asymmetry

Effects of respiratory time ratio on heart rate variability and spontaneous baroreflex sensitivity

2013 ◽  
Vol 115 (11) ◽  
pp. 1648-1655 ◽  
Author(s):  
Yong-Ping Wang ◽  
Terry B. J. Kuo ◽  
Chun-Ting Lai ◽  
Jui-Wen Chu ◽  
Cheryl C. H. Yang
Keyword(s):  
Heart Rate ◽  
Heart Rate Variability ◽  
Baroreflex Sensitivity ◽  
Sitting Position ◽  
Relative Timing ◽  
Paced Breathing ◽  
Time Ratio ◽  
Rate Asymmetry ◽  
Heart Rate Asymmetry ◽  
Spontaneous Baroreflex

Paced breathing is a frequently performed technique for cardiovascular autonomic studies. The relative timing of inspiration and expiration during paced breathing, however, is not consistent. We, therefore, examined whether indexes of heart rate variability and spontaneous baroreflex sensitivity would be affected by the respiratory time ratio that is set. We studied 14 healthy young adults who controlled their breathing rates to either 0.1 or 0.25 Hz in the supine and sitting positions. Four different inspiratory-to-expiratory time ratios (I/E) (uncontrolled, 1:1, 1:2, and 1:3) were examined for each condition in a randomized order. The results showed spectral indexes of heart rate variability and spontaneous baroreflex sensitivity were not influenced by the I/E that was set during paced breathing under supine and sitting positions. Porta's and Guzik's indexes of heart rate asymmetry were also not different at various I/E during 0.1-Hz breathing, but had larger values at 1:1 during 0.25-Hz breathing, although significant change was found in the sitting position only. At the same time, Porta's and Guzik's indexes obtained during 0.1-Hz breathing were greater than during 0.25-Hz breathing in both positions. The authors suggest that setting the I/E during paced breathing is not necessary when measuring spectral indexes of heart rate variability and spontaneous baroreflex sensitivity under the conditions used in this study. The necessity of paced breathing for the measurement of heart rate asymmetry, however, requires further investigation.

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