EFFECTS OF HEART RATE VARIABILITY BIOFEEDBACK SESSIONS ON THE DYNAMICS OF THE EEG SPECTRAL POWER DURING EXPERIMENTAL HYPOTHERMIA

The aim of this study was to determine the amplitude-frequency characteristics of the electroencephalogram (EEG) and heart rate variability (HRV) in humans, depending on the initial serum TNF-α level at a single session of heart rate variability biofeedback (HRV BF) due to increase the total power of the HRV spectrum. Among hypertensive individuals (blood pressure 140-160/80-100 mm Hg) subgroups with an optimal serum TNF-α level (below than 75 quartile - 84,4 pg/ml) and with a high serum TNF-α level (more than 84,4 pg/ml) were selected. In individuals with an optimal serum level of TNF-α, an increase in the total HRV spectral power, a decrease in the stress index, systolic blood pressure and a decrease in the EEG power in the theta range in the frontal brain regions after HRV BF session were identified. In individuals with a high serum TNF-α level the effectiveness of HRV BF was minimal against the background of continuing sympathicotonia and high theta EEG-activity.

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FEATURES OF AUDITORY COGNITIVE EVOKED POTENTIALS P300 IN SUCCESSFUL HEART RATE VARIABILITY BIOFEEDBACK IN ADOLESCENTS LIVING IN ARCTIC AREA

Human Ecology ◽

10.33396/1728-0869-2016-1-26-31 ◽

2016 ◽

pp. 26-31

Author(s):

E. V. Krivonogova

Keyword(s):

Heart Rate ◽

Heart Rate Variability ◽

Evoked Potentials ◽

Heart Rate Variability Biofeedback ◽

Cognitive Evoked Potentials ◽

Arctic Area

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A preliminary systematic review and meta-analysis on the effects of heart rate variability biofeedback on heart rate variability and respiration of athletes

Journal of Complementary and Integrative Medicine ◽

10.1515/jcim-2020-0528 ◽

2021 ◽

Vol 0 (0) ◽

Author(s):

Jeffrey Cayaban Pagaduan ◽

Yung-Sheng Chen ◽

James William Fell ◽

Sam Shi Xuan Wu

Keyword(s):

Systematic Review ◽

Heart Rate ◽

Heart Rate Variability ◽

Web Of Science ◽

Meta Analysis ◽

Academic Research ◽

Experimental Studies ◽

Quantitative Review ◽

Heart Rate Variability Biofeedback ◽

Randomized Control

Abstract To date, there is no quantitative review examining the influence of heart rate variability biofeedback (HRV BFB) on the athlete population. Such an undertaking may provide valuable information on the autonomic and respiration responses of athletes when performing HRV BFB. Thus, purpose of this preliminary systematic review and meta-analysis on the effects of HRV BFB on HRV and respiration of athletes. Searches of Springerlink, SportDiscus, Web of Science, PROQUEST Academic Research Library, Google Scholar, and ScienceDirect were conducted for studies that met the following criteria: (1) experimental studies involving athletes that underwent randomized control trial; (2) availability of HRV BFB as a treatment compared with a control (CON)/placebo (PLA); (3) any pre and post HRV variable and/or breathing frequency as dependent variable/s; and, (4) peer-reviewed articles written in English. Four out of 660 studies involving 115 athletes (25 females and 90 males) ages 16–30 years old were assessed in this review. Preliminary findings suggest the promising ability of HRV BFB to improve respiratory mechanics in athlete population. More work is needed to determine the autonomic modulatory effect of HRV BFB in athletes.

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Heart Rate Variability Biofeedback in Grandmothers Raising Grandchildren: Effects on Stress, Emotions, and Cognitions

Biofeedback ◽

10.5298/1081-5937-41.3.06 ◽

2013 ◽

Vol 41 (3) ◽

pp. 144-149 ◽

Cited By ~ 9

Author(s):

Jaclene A. Zauszniewski ◽

Tsay-Yi Au ◽

Carol M. Musil

Keyword(s):

Heart Rate ◽

Heart Rate Variability ◽

Perceived Stress ◽

Repeated Measures ◽

Negative Emotions ◽

Pilot Trial ◽

Heart Rate Variability Biofeedback ◽

Grandmothers Raising Grandchildren ◽

Depressive Cognitions ◽

Reducing Stress

Over one million American grandmothers raise grandchildren, and many experience stress that may be alleviated by biofeedback. This pilot trial of 20 grandmothers used a pretest-posttest design with repeated measures to test the effects of heart rate variability (HRV) biofeedback on perceived stress, negative emotions, and depressive cognitions. Significant decreases in stress, negative emotions, and depressive cognitions were found. Biofeedback is thus potentially effective for reducing stress and depressive thoughts and feelings in grandmothers raising grandchildren, and the intervention warrants further testing.

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Sex differences in associations between insulin resistance, heart rate variability, and arterial stiffness in healthy women and men: a physiology study

Canadian Journal of Physiology and Pharmacology ◽

10.1139/cjpp-2016-0122 ◽

2017 ◽

Vol 95 (4) ◽

pp. 349-355 ◽

Cited By ~ 6

Author(s):

Luke Anthony Rannelli ◽

Jennifer M. MacRae ◽

Michelle C. Mann ◽

Sharanya Ramesh ◽

Brenda R. Hemmelgarn ◽

...

Keyword(s):

Insulin Resistance ◽

Heart Rate ◽

Heart Rate Variability ◽

Sex Differences ◽

Arterial Stiffness ◽

Spectral Power ◽

Applanation Tonometry ◽

Healthy Population ◽

Model Assessment ◽

Healthy Women

Diabetes confers greater cardiovascular risk to women than to men. Whether insulin-resistance-mediated risk extends to the healthy population is unknown. Measures of insulin resistance (fasting insulin, homeostatic model assessment, hemoglobin A1c, quantitative insulin sensitivity check index, glucose) were determined in 48 (56% female) healthy subjects. Heart rate variability (HRV) was calculated by spectral power analysis and arterial stiffness was determined using noninvasive applanation tonometry. Both were measured at baseline and in response to angiotensin II infusion. In women, there was a non-statistically significant trend towards increasing insulin resistance being associated with an overall unfavourable HRV response and increased arterial stiffness to the stressor, while men demonstrated the opposite response. Significant differences in the associations between insulin resistance and cardiovascular physiological profile exist between healthy women and men. Further studies investigating the sex differences in the pathophysiology of insulin resistance in cardiovascular disease are warranted.

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HRV Biofeedback and Addiction: Rehabbing Body, Mind and Spirit

Biofeedback ◽

10.5298/1081-5937-49.01.02 ◽

2021 ◽

Vol 49 (1) ◽

pp. 10-17

Author(s):

Amy Hudson

Keyword(s):

Heart Rate ◽

Chronic Pain ◽

Heart Rate Variability ◽

The Body ◽

Heart Rate Variability Biofeedback ◽

The Mind

Addiction is a devastating disease of the body, the mind, and even the personality. Recent research shows that heart rate variability biofeedback can help the alcoholic/addict recover in three crucial ways, namely (1) treating the associated comorbidities (depression, anxiety, chronic pain), (2) treating the physiology around craving, and (3) returning to a loving and nurturing relationship with one's own body instead of an abusive and exploitive one.

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Characteristics of heart rate variability in patients with acute coronary syndrome without ST segment elevation in comparison with clinical and biochemical parameters

I P Pavlov Russian Medical Biological Herald ◽

10.17816/pavlovj35173 ◽

2021 ◽

Vol 29 (3) ◽

pp. 369-378

Author(s):

Aleksej A. Nizov ◽

Aleksej I. Girivenko ◽

Mihail M. Lapkin ◽

Aleksej V. Borozdin ◽

Yana A. Belenikina ◽

...

Keyword(s):

Heart Rate ◽

Heart Rate Variability ◽

Acute Coronary Syndrome ◽

Creatine Phosphokinase ◽

Spectral Power ◽

Low Frequency ◽

Heart Rhythm ◽

St Segment Elevation ◽

Coronary Syndrome ◽

St Segment

BACKGROUND: The search for rational methods of primary, secondary, and tertiary prevention of coronary heart disease. To date, there are several publications on heart rate variability in ischemic heart disease. AIM: To study the state of the regulatory systems in the organism of patients with acute coronary syndrome without ST segment elevation based on the heart rhythm, and their relationship with the clinical, biochemical and instrumental parameters of the disease. MATERIALS AND METHODS: The open comparative study included 76 patients (62 men, 14 women) of mean age, 61.0 0.9 years, who were admitted to the Emergency Cardiology Department diagnosed of acute coronary syndrome without ST segment elevation. On admission, cardiointervalometry was performed using Varicard 2.51 apparatus, and a number of clinical and biochemical parameters were evaluated RESULTS: Multiple correlations of parameters of heart rate variability and clinical, biochemical and instrumental parameters were observed. From this, a cluster analysis of cardiointervalometry was performed, thereby stratifying patients into five clusters. Two extreme variants of dysregulation of the heart rhythm correlated with instrumental and laboratory parameters. A marked increase in the activity of the subcortical nerve centers (maximal increase of the spectral power in the very low frequency range with the underlying reduction of SDNN) in cluster 1 was associated with reduction of the left ventricular ejection fraction: cluster 147.0 [40.0; 49.0], cluster 260.0 [58.0; 64.0], cluster 360.0 [52.5; 64.5] % (the data are presented in the form of median and interquartile range; Me [Q25; Q75], p 0,05). Cluster 5 showed significant reduction in SDNN (monotonous rhythm), combined with increased level of creatine phosphokinase (CPC): cluster 5446,0 [186.0; 782.0], cluster 4141.0 [98.0; 204.0] IU/l; Me [Q25; Q75], p 0.05) and MВ-fraction of creatine phosphokinase; cluster 532.0 [15.0; 45.0], 4 cluster 412.0 [9.0; 18.0] IU/l; Me [Q25; Q75], p 0.05). CONCLUSIONS: In patients with acute coronary syndrome without ST segment elevation, cluster analysis of parameters of heart rate variability identified different peculiarities of regulation of the heart rhythm. Pronounced strain of the regulatory systems of the body was found to be associated with signs of severe pathology: the predominance of VLF (spectral power of the curve enveloping a dynamic range of cardiointervals in the very low frequency range) in spectral analysis with an underlying reduced SDNN is characteristic of patients with a reduced ejection fraction, and a monotonous rhythm is characteristic of patients with an increased level of creatine phosphokinase and MB-fraction of creatine phosphokinase.

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The Promise of Heart Rate Variability Biofeedback: Evidence-Based Applications

Biofeedback ◽

10.5298/1081-5937-41.3.01 ◽

2013 ◽

Vol 41 (3) ◽

pp. 110-120 ◽

Cited By ~ 74

Author(s):

Richard Gevirtz

Keyword(s):

Heart Rate ◽

Heart Rate Variability ◽

Empirical Evidence ◽

Point Of View ◽

Evidence Based ◽

Multiple Sources ◽

Heart Rate Variability Biofeedback

Heart rate variability biofeedback has enjoyed increased popularity in recent years. In this review, empirical evidence from multiple sources is presented from the point of view of possible mechanisms of effect. While more research is clearly needed, the data thus far are certainly promising.

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Changes in Respiratory Rate, Blood Pressure and Heart Rate Variability in Rabbits during Orthostasis

Acta Veterinaria Brno ◽

10.2754/avb200675010003 ◽

2006 ◽

Vol 75 (1) ◽

pp. 3-12 ◽

Cited By ~ 4

Author(s):

J. Mokrý ◽

T. Remeňová ◽

K. Javorka

Keyword(s):

Blood Pressure ◽

Heart Rate ◽

Heart Rate Variability ◽

Respiratory Rate ◽

Supine Position ◽

Spectral Power ◽

Systemic Blood Pressure ◽

Microcomputer System ◽

Systemic Blood ◽

Frequency Bands

The purpose of the study was to evaluate the changes of respiratory rate, systemic blood pressure and heart rate variability parameters (HRV) during orthostasis in anaesthetized rabbits. Furthermore, these changes were influenced by affecting the renin-angiotensin-aldosterone (RAA) system and autonomic nervous system (ANS) to study the mechanisms participating in activity of spectral frequency bands of HRV in rabbits. Ten adult rabbits (Chinchilla) were anaesthetized by ketamine and flunitrazepam. The systemic blood pressure, tidal volume and respiratory rate were measured. HRV was evaluated by microcomputer system VariaPulse TF3E. The R-R intervals were derived from the electrocardiogram signal from subcutaneous needle electrodes. The evaluation of HRV in very low (VLF; 0.01-0.05 Hz), low (LF; 0.05-0.15 Hz) and high frequency bands (HF; 0.15-2.0 Hz) was made and parameters of frequency and time analysis were calculated. The measurements were made in horizontal (supine) position, in orthostasis (the angle of 60 °) and again in supine position before and after enalapril (0.5 mg/kg b.w.), metipranolol (0.2 mg/kg b.w.), and after subsequent bilateral cervical vagotomy. The orthostasis in anaesthetized rabbits is accompanied by depression of respiratory rate reversed only by vagotomy. Furthermore, decrease of systemic blood pressure, unchanged heart rate and increased characteristics of heart rate variability were found, with predominant increase of spectral power in LF and VLF bands. This elevation can be eliminated only by complete blockade of ANS. Although the participation of ANS or RAA system in modification of individual HRV frequency bands is not as specific as in humans, we confirmed the participation of RAA system in determination of the VLF band.

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