scholarly journals Effects of Acupuncture on Heart Rate Variability in Beagles; Preliminary Results

2013 ◽  
Vol 2013 ◽  
pp. 1-4 ◽  
Author(s):  
Huan Wang ◽  
Gerhard Litscher ◽  
Xian Shi ◽  
Yue Bo Jiang ◽  
Lu Wang
Keyword(s):  
Heart Rate ◽  
Heart Rate Variability ◽  
Nervous System ◽  
Autonomic Function ◽  
Low Frequency ◽  
Stable Conditions ◽  
Cervical Vagotomy ◽  
Body Acupuncture ◽  
Acupuncture Effects ◽  
Beijing China

Evidence-based animal experimental research concerning the effects of acupuncture on autonomic function was performed by two research teams from China and Austria. This study describes measurements in beagles. Heart rate variability (HRV) recordings were performed under stable conditions in Beijing, China, and the data analysis and interpretation were completed in Graz, Austria. The electrocardiograms were recorded during bilateral body acupuncture (PC6, Neiguan). Power of the low frequency (LF), high frequency (HF), and the ratio (LF/HF) changed significantly during acupuncture stimulation in beagles after injection of atropine andβ-blocker. However, there was no significant change in HF power after needling the Neiguan acupoint when a cervical vagotomy has been performed. Our findings show that acupuncture can mediate the HRV even after pharmaceutical blocking of autonomic function. Acupuncture effects on HRV should rely not only on autonomic nervous system but on complete central nervous system.

scholarly journals Sino-European Transcontinental Basic and Clinical High-Tech Acupuncture Studies—Part 1: Auricular Acupuncture Increases Heart Rate Variability in Anesthetized Rats

2012 ◽  
Vol 2012 ◽  
pp. 1-7 ◽  
Author(s):  
Xin-Yan Gao ◽  
Kun Liu ◽  
Bing Zhu ◽  
Gerhard Litscher
Keyword(s):  
Heart Rate ◽  
Heart Rate Variability ◽  
Low Frequency ◽  
Auricular Acupuncture ◽  
High Tech ◽  
Sprague Dawley ◽  
Anesthetized Rats ◽  
Stable Conditions ◽  
Acupuncture Research ◽  
Beijing China

Evidence-based research concerning the effects of high-tech acupuncture on autonomic function was performed by two research teams from China and Austria. This study describes the first transcontinental teleacupuncture measurements in animals. Heart rate (HR) and heart rate variability (HRV) recordings in 10 male Sprague-Dawley anesthetized rats were performed under stable conditions in Beijing, China, and the data analysis was completed in Graz, Austria. The electrocardiograms (ECGs) were recorded by an HRV Medilog AR12 system during acupuncture of the ear and body (PC6 Neiguan, CV12 Zhongwan, ST36 Zusanli). The data were analyzed using specially adapted novel Austrian software. HR did not change significantly during any acupuncture stimulation in anesthetized rats (ear acupuncture, PC6, CV12, or ST36). Total HRV only changed significantly(P=0.025)during auricular acupuncture (acupoint heart). The low-frequency/high-frequency ratio parameter decreased significantly(P=0.03)during stimulation of ST36. This change was based on intensification of the related mechanism of blood pressure regulation that has been demonstrated in previous studies in humans. Modernization of acupuncture research performed as a collaboration between China and Austria has also been demonstrated.

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.

Effect of Acupuncture on Heart Rate Variability in Primary Dysmenorrheic Women

2011 ◽  
Vol 39 (02) ◽  
pp. 243-249 ◽  
Author(s):  
Eunsook Kim ◽  
Jung-Hoon Cho ◽  
Woo Sang Jung ◽  
Sanghoon Lee ◽  
Sok Cheon Pak
Keyword(s):  
Heart Rate ◽  
Heart Rate Variability ◽  
Nervous System ◽  
Autonomic Nervous System ◽  
Low Frequency ◽  
Acupuncture Points ◽  
Primary Dysmenorrhea ◽  
Autonomic Nervous ◽  
Real Acupuncture ◽  
Late Luteal Phase

Primary dysmenorrhea is a common gynecological complaint among young women that is related to an autonomic nervous system (ANS) disturbance. Acupuncture is one of several therapeutic approaches for primary dysmenorrhea, since it can modulate ANS function. The heart rate variability (HRV) parameters such as high frequency (HF), low frequency (LF) and LF/HF ratio are generally accepted tools to assess ANS activity. The purpose of this study was to investigate the effects of acupuncture applied at Hegu (LI4) and Sanyinjiao (SP6) points on HRV of women with primary dysmenorrhea during the late luteal phase. The experimental design was a crossover and patient-blinded procedure. All subjects participated in Sham (SA) and Real Acupuncture (RA) procedure, separated by one month, in a crossover sequence. The participants included 38 women (mean age 22.3 years; weight 53.8 kg; height 162.6 cm). HRV measurement was 15 min before and 15 min after an acupuncture procedure. The RA procedure was performed at two bilateral acupoints, but needles were inserted subcutaneously to the acupuncture points for the SA procedure. The RA induced a significant decrease in LF/HF ratio and a significant increase in the HF power, while SA treatment caused a significant increase only in the HF power. Manual acupuncture at bilateral acupoints of LI4 and SP6 may play a role in dysmenorrhea treatment with autonomic nervous system involvement.

Evaluation of cardiac autonomic function using heart rate variability in children with acute carbon monoxide poisoning

2017 ◽  
Vol 27 (9) ◽  
pp. 1662-1669 ◽  
Author(s):  
Cagdas Vural ◽  
Ener Cagri Dinleyici ◽  
Pelin Kosger ◽  
Ozge Bolluk ◽  
Zubeyir Kilic ◽  
...  
Keyword(s):  
Heart Rate ◽  
Carbon Monoxide ◽  
Heart Rate Variability ◽  
High Frequency ◽  
Autonomic Function ◽  
Spectral Power ◽  
Carbon Monoxide Poisoning ◽  
Low Frequency ◽  
Qt Dispersion ◽  
Cardiac Autonomic Function

AbstractIntroductionCarbon monoxide poisoning may cause myocardial toxicity and cardiac autonomic dysfunction, which may contribute to the development of life-threatening arrhythmias. We investigated the potential association between acute carbon monoxide exposure and cardiac autonomic function measured by heart rate variability.MethodThe present study included 40 children aged 1–17 years who were admitted to the Pediatric Intensive Care Unit with acute carbon monoxide poisoning and 40 healthy age- and sex-matched controls. Carboxyhaemoglobin and cardiac enzymes were measured at admission. Electrocardiography was performed on admission and discharge, and 24-hour Holter electrocardiography was digitally recorded. Heart rate variability was analysed at both time points – 24-hour recordings – and frequency domains – from the first 5 minutes of intensive care unit admission.ResultsTime domain and frequency indices such as high-frequency spectral power and low-frequency spectral power were similar between patient and control groups (p>0.05). The ratio of low-frequency spectral power to high-frequency spectral power was significantly lower in the carbon monoxide poisoning group (p<0.001) and was negatively correlated with carboxyhaemoglobin levels (r=−0.351, p<0.05). The mean heart rate, QT dispersion, corrected QT dispersion, and P dispersion values were higher in the carbon monoxide poisoning group (p<0.05) on admission. The QT dispersion and corrected QT dispersion remained longer in the carbon monoxide poisoning group compared with controls on discharge (p<0.05).ConclusionThe frequency domain indices, especially the ratio of low-frequency spectral power to high-frequency spectral power, are useful for the evaluation of the cardiac autonomic function. The decreased low-frequency spectral power-to-high-frequency spectral power ratio reflects a balance of the autonomic nervous system, which shifted to parasympathetic components.

scholarly journals Maturation of the Autonomic Nervous System in Premature Infants: Estimating Development Based on Heart-Rate Variability Analysis

2021 ◽  
Vol 11 ◽  
Author(s):  
Mario Lavanga ◽  
Elisabeth Heremans ◽  
Jonathan Moeyersons ◽  
Bieke Bollen ◽  
Katrien Jansen ◽  
...  
Keyword(s):  
Heart Rate ◽  
Heart Rate Variability ◽  
Nervous System ◽  
Autonomic Nervous System ◽  
Premature Infants ◽  
Low Frequency ◽  
Absolute Error ◽  
Heart Rate Variability Analysis ◽  
Autonomic Nervous ◽  
Comparable Performance

This study aims at investigating the development of premature infants' autonomic nervous system (ANS) based on a quantitative analysis of the heart-rate variability (HRV) with a variety of novel features. Additionally, the role of heart-rate drops, known as bradycardias, has been studied in relation to both clinical and novel sympathovagal indices. ECG data were measured for at least 3 h in 25 preterm infants (gestational age ≤32 weeks) for a total number of 74 recordings. The post-menstrual age (PMA) of each patient was estimated from the RR interval time-series by means of multivariate linear-mixed effects regression. The tachograms were segmented based on bradycardias in periods after, between and during bradycardias. For each of those epochs, a set of temporal, spectral and fractal indices were included in the regression model. The best performing model has R2 = 0.75 and mean absolute error MAE = 1.56 weeks. Three main novelties can be reported. First, the obtained maturation models based on HRV have comparable performance to other development models. Second, the selected features for age estimation show a predominance of power and fractal features in the very-low- and low-frequency bands in explaining the infants' sympathovagal development from 27 PMA weeks until 40 PMA weeks. Third, bradycardias might disrupt the relationship between common temporal indices of the tachogram and the age of the infant and the interpretation of sympathovagal indices. This approach might provide a novel overview of post-natal autonomic maturation and an alternative development index to other electrophysiological data analysis.

scholarly journals Heart Rate Variability Analysis in Patients with Allergic Rhinitis

2013 ◽  
Vol 2013 ◽  
pp. 1-4 ◽  
Author(s):  
Ming-Ying Lan ◽  
Guo-She Lee ◽  
An-Suey Shiao ◽  
Jen-Hung Ko ◽  
Chih-Hung Shu
Keyword(s):  
Heart Rate ◽  
Allergic Rhinitis ◽  
Heart Rate Variability ◽  
Nervous System ◽  
Low Frequency ◽  
Sitting Position ◽  
Rr Intervals ◽  
Hrv Analysis ◽  
Low Frequency Power ◽  
Frequency Power

Background. Very few studies investigate the role of the autonomic nervous system in allergic rhinitis. In this study, we evaluated the autonomic nervous system in allergic rhinitis patients using heart rate variability (HRV) analysis.Methods. Eleven patients with allergic rhinitis and 13 healthy controls, aged between 19 and 40 years old, were enrolled in the study. Diagnosis of allergic rhinitis was based on clinical history, symptoms, and positive Phadiatop test. Electrocardiographic recordings on the sitting and supine positions were obtained for HRV analysis.Results. In the supine position, there were no significant statistical differences in very-low-frequency power (VLF, ≤0.04 Hz), low-frequency power (LF, 0.04–0.15 Hz), high-frequency power (HF, 0.15–0.40 Hz), and the ratio of LF to HF (LF/HF) between the patient and control groups. The mean RR intervals significantly increased, while LF% and LF/HF significantly decreased in the patient group in the sitting position. Moreover, mean RR intervals, LF, and LF/HF, which were significantly different between the two positions in the control group, did not show a significant change with the posture change in the patient group.Conclusion. These suggest that patients with allergic rhinitis may have poor sympathetic modulation in the sitting position. Autonomic dysfunction may therefore play a role in the pathophysiology of allergic rhinitis.

CONFIRMATION OF THE CLINICAL VALUE AND THE EFFECT OF SOUND BIOFEEDBACK ON THE AUTONOMIC NERVOUS SYSTEM THROUGH HEART RATE VARIABILITY ANALYSIS

2021 ◽  
pp. 2150036
Author(s):  
DAECHANG KIM ◽  
SEUNGBONG LEE ◽  
SUNGMIN KIM ◽  
JAEHOON JEONG
Keyword(s):  
Heart Rate ◽  
Heart Rate Variability ◽  
Nervous System ◽  
Autonomic Nervous System ◽  
Previous History ◽  
Low Frequency ◽  
Sympathetic Nerves ◽  
Heart Rate Variability Analysis ◽  
Clinical Value ◽  
Autonomic Nervous

The purpose of this study is to suggest sound biofeedback, which is a new technique of early stress relief effect by observing change in the heart rate variability (HRV). The sound biofeedback imitating heart rate of the comfortable and stress state is termed parasympathetic stimulation sound (PSS) and sympathetic stimulation sound (SSS), respectively. Twelve subjects were selected without previous history of cardiovascular diseases and mental illness, such as arrhythmia, myocardial infarction, depression and panic disorder. To confirm the changes in the low-frequency (LF), high-frequency (HF) and LF/HF values of HRV as stress evaluation indicators, the HRV of subjects was measured by photoplethysmogram. Signals were processed using the peak detect algorithm, and fast Fourier transform. Results were obtained using power specific densities. During the PSS stimulation, the LF/HF tended to decrease generally. On the other hand, during the SSS stimulation, LF/HF tended to increase. The LF/HF Mean change value ([Formula: see text]) using the PSS stimulation is similar to the effect of Transcutaneous Vagal Nerve Stimulation (tVNS). In addition, the quantitative effect of sound biofeedback was confirmed by judging changes in the parasympathetic and sympathetic nerves in the autonomic nervous system (ANS) through [Formula: see text]-score normalized data. These experimental results suggest that sound biofeedback has the same stimulation location and clinical applicability as tVNS. As a result, sound biofeedback may be used as a new method for stress reduction.

Interrelation between psychophysiological indices and autonomic adaptive response youth information overload

2014 ◽  
Vol 25 (3-4) ◽  
pp. 99-106
Author(s):  
V. V. Mizin ◽  
O. A. Isakov ◽  
M. A. Voitenko ◽  
V. P. Lyashenko
Keyword(s):  
Heart Rate ◽  
Heart Rate Variability ◽  
Nervous System ◽  
Autonomic Nervous System ◽  
Information Overload ◽  
Low Frequency ◽  
Information Load ◽  
Adaptive Responses ◽  
Autonomic Nervous ◽  
National University

Nowaday humanity lives in a super information world, which is marked by an increase in volume of auditory and visual information, the acceleration of change in the objective and the spirit world, increase information load in the form of electromagnetic waves caused by man. This can lead to information overload, the essence of which is that the amount of useful information coming exceed the objective possibilities of perception. The singular group, which is over loaded by information – the students. The aim of the presented work was to identify the relationship between psychophysiological indices and vegetative adaptive responses of the students from the Dnepropetrovsk National University of Oles Gonchar on information overload, which may form the basis for the formation of curricula and educational work in high school and would like to offer some prognostic model of the functional state of the students in today's environment. The study involved 120 students volunteer 2–3 courses of natural specialties Dnepropetrovsk National University of Oles Gonchar. To determine the physiological features and functional state of the students the program «Psychodiagnostics» was used. For registration of heart rate variability a heart rate monitor POLAR RS800CX was used. Testing was conducted before and after the information load. Information load carried by means of tests Schulte, Bourdon and Gorbova granted in computerized form. In boys enrolled in natural specialties found high rates of properties of neural processes. Under the influence of information load indicator latent period of reaction time choosing two out of three was significantly decreased by 15 % and the rate of functional mobility of nervous processes that characterize the strength of nervous processes significantly decreased by 17 %. Mobility and balance the nervous processes when information load decreased. These changes in performance can indicate the presence of an imbalance of the autonomic nervous system stress due to information load. Resulting in uneven tasks and the lack of a clear rhythm work. Under the influence of information load significantly increased capacity is very high-frequency range (VLF, ms2) and total power (Total, ms2). Exceeding the indicator VLF, may indicate an increased influence of humoral-metabolic mechanisms regulating heart rate. There is a tendency to increase of high-capacity and low-frequency spectra, and reduce the percentage of very low-frequency (HF) range. Also, the rate of vago-sympathetic tone (LF/HF) 2 times higher than normal, which may indicate the presence sympathicotonia. Indicators spectral analysis of heart rate variability was significantly increased, the rate of the average standard deviation (SDNN) increased by 23 % and the prevalence rate of parasympathetic regulation of sympathetic link link (pNN50) by 37 %. These changes indicate activation of the sympathetic division of the autonomic nervous system and low adaptive capacities of the autonomic nervous system. Our investigations have shown that young natural specialties of Dnepropetrovsk National University of Oles Gonchar are influenced by information load significantly deteriorated physiological parameters and heart rate variability. Infringement of autonomic adaptive responses leads to a decline in physical and mental performance of boys. 

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