Relevant bibliographies by topics / Sympathovagal balance

Academic literature on the topic 'Sympathovagal balance'

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Published: 4 June 2021
Last updated: 21 February 2023

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Journal articles on the topic "Sympathovagal balance"

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Eckberg, Dwain L. "Sympathovagal Balance." Circulation 96, no. 9 (November 4, 1997): 3224–32. http://dx.doi.org/10.1161/01.cir.96.9.3224.

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Sleight, Peter, and Luciano Bernardi. "Sympathovagal Balance." Circulation 98, no. 23 (December 8, 1998): 2640. http://dx.doi.org/10.1161/01.cir.98.23.2640.

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Prakash, E. S. "‘Sympathovagal balance from heart rate variability: an obituary’, but what is sympathovagal balance?" Experimental Physiology 97, no. 10 (September 28, 2012): 1140. http://dx.doi.org/10.1113/expphysiol.2012.067322.

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Malik, Marek. "Sympathovagal Balance: A Critical Appraisal." Circulation 98, no. 23 (December 8, 1998): 2643–44. http://dx.doi.org/10.1161/01.cir.98.23.2643.

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Petelenz, M., M. Gonciarz, P. Macfarlane, R. Rudner, P. Kawecki, J. Musialik, P. Jalowiecki, and Z. Gonciarz. "Sympathovagal Balance Fluctuates During Colonoscopy." Endoscopy 36, no. 6 (June 2004): 508–14. http://dx.doi.org/10.1055/s-2004-814402.

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Lafitte, Melvyn J., Orin R. Sauvageot, Marion Fevre-Genoulaz, and Marc Zimmermann. "Towards assessing the sympathovagal balance." Medical & Biological Engineering & Computing 44, no. 8 (July 4, 2006): 675–82. http://dx.doi.org/10.1007/s11517-006-0053-1.

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Goldberger, Jeffrey J. "Sympathovagal balance: how should we measure it?" American Journal of Physiology-Heart and Circulatory Physiology 276, no. 4 (April 1, 1999): H1273—H1280. http://dx.doi.org/10.1152/ajpheart.1999.276.4.h1273.

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There are complex interactions between the sympathetic and parasympathetic nervous system inputs to the sinus node. The concept of “sympathovagal balance” reflects the autonomic state resulting from the sympathetic and parasympathetic influences. Despite widespread usage of a variety of heart rate (HR) variability parameters as indexes of sympathovagal balance, no index has been validated as a measure of sympathovagal balance. This study evaluated the utility of HR, HR variability, and a new parameter termed the vagal-sympathetic effect (VSE) as indexes of sympathovagal balance. The ideal parameter had to satisfy the following criteria: 1) the index should vary similarly among subjects in response to different autonomic conditions; 2) the variability in the index among subjects exposed to the same autonomic conditions should be small; and 3) the response of the index to various autonomic conditions should reflect the underlying changes in physiological state and have a meaningful interpretation. Volunteers [8 men, 6 women; mean age 28.5 ± 4.8 (SD) yr] were evaluated for the effects of sympathetic and parasympathetic stimulation and blockade on HR and HR variability. VSE was defined as the ratio of the R-R interval to the intrinsic R-R interval. VSE and R-R interval consistently changed in the expected directions with parasympathetic and sympathetic stimulation and blockade. A general linearized model was used to evaluate the response of each parameter. VSE and R-R interval had r 2 values of 0.847 and 0.852, respectively. Natural logarithm of the low-frequency power had an r 2value of 0.781 with lower r 2 values for all the other HR variability parameters. The coefficient of variation was also lowest for each condition tested for the VSE and the R-R interval. VSE and R-R interval best satisfy the criteria for the ideal index of sympathovagal balance. Because it is impractical under most conditions to measure the VSE as the index of sympathovagal balance, the most suitable index is the R-R interval.
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Goldstein, Brahm. "On the importance of sympathovagal balance." Critical Care Medicine 29, no. 7 (July 2001): 1483–84. http://dx.doi.org/10.1097/00003246-200107000-00035.

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Strigo, Irina A., and Arthur D. (Bud) Craig. "Interoception, homeostatic emotions and sympathovagal balance." Philosophical Transactions of the Royal Society B: Biological Sciences 371, no. 1708 (November 19, 2016): 20160010. http://dx.doi.org/10.1098/rstb.2016.0010.

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We briefly review the evidence for distinct neuroanatomical substrates that underlie interoception in humans, and we explain how they substantialize feelings from the body (in the insular cortex) that are conjoined with homeostatic motivations that guide adaptive behaviours (in the cingulate cortex). This hierarchical sensorimotor architecture coincides with the limbic cortical architecture that underlies emotions, and thus we regard interoceptive feelings and their conjoint motivations as homeostatic emotions . We describe how bivalent feelings, emotions and sympathovagal balance can be organized and regulated efficiently in the bicameral forebrain as asymmetric positive/negative, approach/avoidance and parasympathetic/sympathetic components. We provide original evidence supporting this organization from studies of cardiorespiratory vagal activity in monkeys and functional imaging studies in healthy humans showing activation modulated by paced breathing and passively viewed emotional images. The neuroanatomical architecture of interoception provides deep insight into the functional organization of all emotional feelings and behaviours in humans. This article is part of the themed issue ‘Interoception beyond homeostasis: affect, cognition and mental health’.
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Carpenter, Rosann J., James Dillard, Adrienne S. Zion, Gregory J. Gates, Matthew N. Bartels, John A. Downey, and Ronald E. De Meersman. "The Acute Effects of Acupuncture Upon Autonomic Balance in Healthy Subjects." American Journal of Chinese Medicine 38, no. 05 (January 2010): 839–47. http://dx.doi.org/10.1142/s0192415x10008287.

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Restoration of the sympathovagal (S/V) balance, involving a lowering of sympathetic and/or an augmentation of vagal modulation or a combination of both is associated with improvements in cardiovascular morbidity and mortality. To determine whether acupuncture exerts a favorable influence upon resting blood pressure and sympathovagal balance, a single-blind cross-over investigation was used to study the acute effects of acupuncture on S/V balance in normal healthy subjects. The ANOVA revealed a significant lowering of the sympathovagal balance (LF:HF) during rest for the acupuncture treatment from pre (4 ± 2 nu) to post (2.2 ± 1.8 nu)(p < 0.05). No such change was seen during sham treatment. The ANOVA revealed significant differences in systolic blood pressures during rest (114 ± 4 vs. 108 ± 3 mmHg) for the acupuncture treatment (p < 0.05). No significance was found during the sham treatment. The ANOVA failed to reveal any significant improvements in sympathovagal balance during the sustained isometric contraction. The clinical significance of these findings appears to suggest that acupuncture treatment might be beneficial in lowering blood pressure at rest. Furthermore, the lowering of the blood pressure might be in part due to a lowering of the sympathovagal balance. These findings are of importance since acupuncture treatments are non-pharmacological and have no known detrimental side-effects. This investigation employed healthy volunteers, yet acupuncture has been found to have more potent effects in animal models of hypertension and or in the presence of an autonomic imbalance.
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Dissertations / Theses on the topic "Sympathovagal balance"

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Reichenberger, David Andrew. "Sleep Quality and Sympathovagal Balance during Stress." Thesis, North Dakota State University, 2015. https://hdl.handle.net/10365/27707.

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Sleep has been shown to be associated with the sympathetic and parasympathetic branches of the autonomic nervous system at rest and during stress. However, sleep has not been examined in the context of sympathovagal balance (the coupled relationship between the sympathetic and parasympathetic nervous systems) during stress. The current study investigated whether sleep quality was associated with sympathovagal activity and reactivity to stress. Female participants (N=59) underwent a psychosocial stress task and completed the Pittsburgh Sleep Quality Index while EKG and ICG data were collected. Sleep quality was associated with pre-ejection period at rest and during stress, ps<.05, but was not associated with high-frequency heart rate variability or with sympathovagal reactivity, ps>.05. These findings suggest that sympathetic activity and reactivity account for a significant amount of variance in the relationship between sleep and the autonomic nervous system.
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Marchant, Forde Ruth M. "Heart rate variability and sympathovagal balance during normal and stressed states in farm animals." Thesis, Durham University, 2003. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.400684.

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Sayin, Halil. "Balance sympatho-vagale chez le rat éveillé : méthodes d’étude et application à la fibrillation atriale." Thesis, Lyon, 2017. http://www.theses.fr/2017LYSE1149/document.

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Ce travail a eu pour but (1) de comparer les différentes méthodes d'évaluation de la balance sympatho-vagale (BSV) actuellement utilisées chez le rat, et (2) d'évaluer les effets d'une altération de la BSV en faveur d'une prédominance vagale sur l'instabilité électrique atriale spontanée chez le rat spontanément hypertendu (SHR) vieillissant. L'électrocardiogramme a été mesuré chez les rats éveillés grâce à une sonde télémétrique chroniquement implantée. La méthode de référence pour l'estimation de la BSV repose sur le calcul du rapport de la fréquence cardiaque (FC) de repos à la FC intrinsèque. Selon que l'index est supérieur ou inférieur à 1, on peut conclure respectivement à une prédominance sympathique ou à une prédominance vagale. La FC intrinsèque est obtenue par l'administration combinée d'antagonistes sélectifs des deux branches du système nerveux autonome, c'est-à-dire un bloqueur β-adrénergique (aténolol) et un antagoniste des récepteurs muscariniques (méthylatropine). Les autres méthodes (mesure séparée des tonus autonomes, index extraits de l'analyse de la variabilité sinusale) fournissent des résultats incohérents ou contradictoires. L'administration chronique d'un inhibiteur de l'acétylcholinestérase (pyridostigmine) chez des rats SHR vieillissants induit une hypertonie vagale relative (BSV=0,81±0,02) par rapport aux rats non traités (BSV=1,06±0,01) qui s'accompagne d'une bradycardie sinusale et d'une augmentation de la fréquence et de la durée des épisodes de tachyarythmie atriale. Ces études démontrent l'intérêt de la méthode de référence pour l'estimation de la BSV chez le rat éveillé. La potentialisation de l'activité vagale endogène aggrave l'instabilité électrique atriale chez le rat SHR vieillissant, ce qui confirme le rôle pathogénique du système nerveux parasympathique dans ce modèle
The aim of the present work was (1) to compare the different methods currently used to assess sympathovagal balance (SVB) in rats, and (2) to assess SVB alterations towards vagal predominance on atrial electrical instability in aging spontaneously hypertensive rats (SHR). The electrocardiogram was measured in conscious rats using chronically implanted telemetric probes. The reference method to estimate SVB is based on the calculation of the ratio of intrinsic heart rate (HR) to resting HR. Depending on whether the index is greater or lower than 1, one can conclude to sympathetic or vagal predominance, respectively. Intrinsic HR is obtained after the combined administration of selective antagonists of both branches of the autonomic nervous system, i.e. β- adrenergic blocker (atenolol) and muscarinic receptor antagonist (methylatropine). Other methods (autonomic tones measured separately, calculation of indices derived from heart rate variability analysis) provide inconsistent or conflicting results. The chronic infusion of an acetylcholinesterase inhibitor (pyridostigmine) in aging SHRs induced relative vagal hypertonia (SVB=0.81±0.02) in comparison with untreated rats (SVB=1.06±0.01) along with sinus bradycardia and increased frequency and duration of atrial tachyarrhythmia episodes. These studies highlight the value of the reference method for evaluating SVB in conscious rats. Potentiation of endogenous vagal activity aggravates atrial electrical instability in aging SHRs, consistent with a pathogenic role of the parasympathetic nervous system in this model
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Alomari, Abdul-Hakeem Hussein Electrical Engineering &amp Telecommunications Faculty of Engineering UNSW. "Spectral analysis of arterial blood prssure and stroke volume variability: the role of Calcium channel blockers and sensitizers." Publisher:University of New South Wales. Electrical Engineering & Telecommunications, 2008. http://handle.unsw.edu.au/1959.4/43923.

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In this thesis, we included results from two studies. The first one considered the effects of the blood volume changes, during blood donation, on the heart rate variability (HRV) measured, non-invasively, form electrocardiographic (ECG) and photoplethysmographic (PPG) signals. Our results showed that, during blood donation, there were no significant changes in the pulsatile area of PPG signal, while heart rate increased. No significant changes were noticed in HRV extracted from both signals. Error analysis between the HRV extracted from ECG and peak interval variability (PIV) suggested that the error during blood donation was increased which means that the use of PIV extracted from PPG signal, used as a replacement diagnostic tool in clinical applications, needs further investigations and should be carefully studied in non-stationary cardiovascular situations such as blood donation. The imbalance between the two branches of the autonomic nervous system, sympathetic and parasympathetic, vagal, may result in a harmful activation of myocardial tissues which cause arrhythmias and sudden cardiac death. Although the study of the sympathovagal balance have been attracting many researchers, further studies are needed to elucidate the effects of many kinds of drugs on the autonomic modulation of the cardiac muscle, specifically, the cells of sinoatrial (SA) node. The aim of the second part of this thesis was to assess the effects of calcium channel blocker (Verapamil), calcium channel sensitizer (Levosimendan), calcium chloride (CaCl2), the combinations of verapamil/ CaCl2, levosimendan/ CaCl2, and noradrenaline infusion on beat-to-beat cardiovascular variability represented, in this research, by systolic blood pressure variability (SBPV), and stroke volume variability (SVV) signals. We used Fat Fourier Transform (FFT) to evaluate the power spectral density of the fluctuations in both signals to evaluate the effects of short-term treatments with those drugs on the sympathovagal balance in normal rats. Then, we compared the spectra obtained from SBPV and SVV to decide which of these fluctuations along with corresponding spectrum was more able to provide a clear feedback about the autonomic nervous system. Our data suggests that there were a significant correlations between low- (LF), mid- (MF), and high-frequency (HF) spectra obtained from SBPV and SVV except between the HF spectra estimated from after the infusion of levosimendan where a poor correlation (r = 0.530, p = 0.281) was noticed. This that both HF components obtained provide different information regarding the autonomic nervous system modulation of the SA node cells, while the results obtained from the rest of experiments showed that both signals provide same information about the modulation of sympathetic and parasympathetic tone due to all stages of different drugs infusion studied in this thesis. Besides that, we found that both spectra may be used to track the fluctuations in the cardiac output as a result of the drugs infusion.
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Schöbel, Christoph [Verfasser]. "Veränderungen der sympathovagalen Balance bei schlafbezogenen Atmungsstörungen / Christoph Schöbel." Berlin : Medizinische Fakultät Charité - Universitätsmedizin Berlin, 2015. http://d-nb.info/1071547666/34.

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Lo, Turco Giovanni. "Analisi spettrale dell'Heart Rate Variability in pazienti con disturbi psichici: valutazione del Sistema Nervoso autonomo nei Disturbi psicotici, d'ansia e dell'umore." Doctoral thesis, Università di Catania, 2012. http://hdl.handle.net/10761/1001.

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Lo scopo del presente studio è stato quello di testare l¿ipotesi primaria di alterazione della Heart rate variability e della frequenza cardiaca in un campione di pazienti affetti da disturbi psichici e l¿ipotesi secondaria di normalizzazione dei valori dell¿HRV come conseguenza del miglioramento clinico. Metodi. Lo studio è stato condotto su un campione di 90 pazienti affetti da disturbi psicotici, d¿ansia e dell¿umore. Ciascun soggetto è stato sottoposto a rilevazione della HRV e della frequenza cardiaca tramite un sensore fotopletismografico e testato con scale di valutazione specifiche in base al disturbo. I parametri rilevati nel campione sono stati confrontati con un gruppo di controllo costituito da soggetti sani. Risultati. Non sono state evidenziate differenze significative della modulazione autonomica cardiaca tra il gruppo di pazienti nei quali si esclude l¿influenza farmacologica ed i controlli; sono, invece, emersi valori significativamente inferiori dei parametri della HRV nel gruppo di soggetti con influenza farmacologica ed in particolare nel sottogruppo di pazienti psicotici, rispetto ai controlli. Dallo studio emerge, inoltre, un incremento significativo della frequenza cardiaca come caratteristica comune nei disturbi psichici, indipendentemente dalla terapia. Il miglioramento clinico sembra promuovere la normalizzazione della variabilità nei soggetti che presentano un¿alta DS, iniziale, del tacogramma. Discussione. Dallo studio si evince un potenziale incremento del rischio di mortalità cardiovascolare nei pazienti, come evidenziato dall¿aumento dei valori della frequenza cardiaca, indipendentemente dal trattamento farmacologico. Tale rischio appare ancora più pronunciato nei pazienti psicotici in trattamento farmacologico a causa della contemporanea riduzione significativa dei parametri della HRV.
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Charlot, Keyne. "Etude de l'oxydation des substrats, de la balance sympathovagale et du glucose pré et postprandial dans les relations entre exercice,hypoxie et comportement alimentaire." Paris 13, 2012. http://scbd-sto.univ-paris13.fr/intranet/edgalilee_th_2012_charlot.pdf.

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Exercice et hypoxie sollicitent l’homéostasie énergétique dans lequel le système neuro-gluco-métabolique est fortement impliqué. Ces réponses ont rarement été étudiées lors d’une séquence prandiale ou en relation avec le comportement alimentaire. Par ailleurs, le suivi en parallèle des cinétiques de ces réponses n’a jamais été exploré. Cette thèse est composée de travaux consacrés à ces relations, conduits chez de jeunes sujets masculins en bonne santé, avec des techniques peu invasives permettant à la fois l’expression d’un comportement alimentaire spontané et une détermina-tion cinétique fine. Dans une première série de deux études, nous avons montré que ni l’exercice physique ni l’hypoxie précédant un repas demandé spontanément, ne modifiaient la séquence préprandiale (niveau de satiété, heure de la demande du repas et hypoglycémie préprandiale) mais que le repas était demandé avec un niveau d’oxydation lipidique plus élevé. L’exercice induisait une diminution de la tolérance relative au glucose, ainsi qu’un retrait vagal plus important et une plus forte oxydation lipidique 3 h après le repas. Un entraînement de 6 semaines, réalisé soit à l’état nourri, soit à jeun, ne modifiait pas ces réponses neuro-gluco-métaboliques. Dans une troisième étude, nous avons montré que la dépense énergétique d’une séance d’exercice n’était que partiellement compensée au cours des 24 h, mais que chez des sujets ayant à la fois une faible condition physique et une adiposité relative élevée, cette compensation se faisait plus spécifiquement sur les lipides. Enfin, dans une quatrième étude, nous avons montré que la consommation d’un repas hyperglucidique était en effet suivie d’une plus faible désaturation artérielle en oxygène lors d’un exercice pratiqué en hypoxie qu’après celle d’un repas hyperprotéique. Cette différence était accompagnée d’une production de CO2 plus élevée et d’une plus forte ventilation
Exercise and hypoxia exposure require energy homeostasis to operate, strongly involving the neuro-glucometabolic system. This response has rarely been studied during a prandial sequence and its relations with spontaneous eating behaviour has never been assessed. Moreover, the parallel recording of this response’s kinetics has never been explored. This thesis consists in works about these relations that were conducted in healthy young male subjects, with non-invasive technics allowing subjects to display a spontaneous eating behaviour and an accurate assessment of variables kinetics. In a first serie of two studies, we showed that neither exercise nor hypoxia exposure prior to a spontaneously requested meal altered the prandial sequence (satiety level, delay of meal request, preprandial glucose decline) but that fat oxidation was greater when the meal was requested. Exercise induced a relative impaired glucose tolerance associated with a greater posprandial vagal withdrawal and a higher fat oxidation 3 h after the meal. Six weeks of training, conducted either in a fed or in a fasted state, did not change these neuro-gluco-metabolic postprandial profiles. In a third study, we showed that exercise-induced energy expenditure was weakly compensated for over the following 24 h, but that subjects with a low fitness condition and a relatively high body fatness, compensated more on dietary fats than high-fit, low-fat subjects. Lastly, in a fourth study, we showed that consuming a high-carbohydrate meal was followed by a lower arterial oxygen desaturation during an exercise session practiced in hypoxia, that consuming a high-protein meal. This difference was associated with a greater CO2 production and ventilation rate
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Negrao, Bianca Lee. "Autonomic correlates at rest and during evoked attention in children with attention-deficit/hyperactivity disorder and effects of sympathomimetic medication." Diss., Pretoria : [s.n.], 2009. http://upetd.up.ac.za/thesis/available/etd-07072009-163036/.

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Chen, Chien Fu, and 陳建甫. "Analysis of Heart Rate Variability to Assess the Changes in Sympathovagal Balance after Acute Ischemic Stroke." Thesis, 2009. http://ndltd.ncl.edu.tw/handle/29147522817657073393.

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碩士
高雄醫學大學
醫學系神經學科碩士班
97
Cardiac autonomic dysfunction is a common complication after acute ischemic stroke (IS). Frequency-domain analysis of heart rate variability (HRV) has gained its popularity with broad applications as a functional indicator of autonomic nervous system. The aim of this study was to investigate the changes in sympathovagal balance and a possible localization dependent difference after acute IS. We studied 75 consecutive acute IS patients with measurements of HRV and associated cardiac autonomic parameters compared to 81 control subjects. Of the 75 patients, 28 had right-sided hemispheric (RH) infarction, 29 had left-sided hemi -spheric (LH) infarction, and 18 had brainstem (BS) infarction. 81 age-matched normal controls (37 men and 44 women; mean age 56.83±8.35 years) were recruited from the hospital and general community. Measurements of HRV and associated parameters including supine and head-up tilt blood pressure and heart rate and the questionares of cardiovascular symptoms were performed in all subjects. Low frequency (LF), high frequency (HF) and HF% in stroke patients were lower than those of the control subjects. The value of LF%, LF/HF were significantly higher than those of the controls. The results revealed that acute IS cause the decrease of HRV and exaggerated sympathetic activation and reduced vagal activity. Comparison of HRV in different localization of stroke patients with controls showed significant differences in LF, HF, LF%, HF%, and LF/HF among stroke groups. Post-hoc comparison identified significant differences between BS versus controls in LF, HF, HF%, LF/HF and between LH versus controls in LF%, HF% and LF/HF. Acute IS causes damage to the cardiac autonomic system manifested on the HRV. Acute BS correlated with greatest reduced parasympathetic and increased sympathetic inpact. In addition, LH had more sympathovagal modulation compared to RH.
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Jarrin, Denise C. "Waking up to weight: The meditational role of sympathovagal balance in the relation between inadequate sleep and childhood obesity." Thesis, 2012. http://spectrum.library.concordia.ca/974662/1/Jarrin_PhD_F2012.pdf.

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Book chapters on the topic "Sympathovagal balance"

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Malliani, Alberto. "Pathophysiological Alterations of Sympathovagal Balance." In Principles of Cardiovascular Neural Regulation in Health and Disease, 109–47. Boston, MA: Springer US, 2000. http://dx.doi.org/10.1007/978-1-4615-4383-1_4.

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Malliani, Alberto. "The Sympathovagal Balance Explored in the Frequency Domain." In Principles of Cardiovascular Neural Regulation in Health and Disease, 65–107. Boston, MA: Springer US, 2000. http://dx.doi.org/10.1007/978-1-4615-4383-1_3.

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Sclocco, R., M. L. Loggia, R. G. Garcia, R. Edwards, J. Kim, S. Cerutti, A. M. Bianchi, V. Napadow, and R. Barbieri. "Nonlinear Relationship between Perception of Deep Pain and Medial Prefrontal Cortex Response Is Related to Sympathovagal Balance." In IFMBE Proceedings, 1671–74. Cham: Springer International Publishing, 2014. http://dx.doi.org/10.1007/978-3-319-00846-2_412.

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Udupa, Kaviraja, and T. N. Sathyaprabha. "Influence of Yoga on the Autonomic Nervous System." In Research-Based Perspectives on the Psychophysiology of Yoga, 67–85. IGI Global, 2018. http://dx.doi.org/10.4018/978-1-5225-2788-6.ch005.

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Increased interest in exploring the physiological benefits of yoga in last few decades resulted in plethora of scientific studies involving different physiological measures in healthy volunteers and patients with various disorders. Of these measures, autonomic functions assessment remained prime role because of wider regulation of autonomic nervous system functions over all visceral systems of the body. Through its two limbs (sympathetic and parasympathetic) autonomic nervous system regulates involuntary visceral organs and systems of the body, which is critical in maintaining the homeostasis of all the physiological functions. This homeostasis is altered in various disease conditions most of which resulted because of the increased stress, a product of modern day lifestyle. Yoga is perfect antidote for the stress, effectively tackling the dreaded effects of stress on physiological systems mainly acting through modulating sympathovagal balance to maintain the homeostasis and restoring the health. We will discuss how yoga achieves this balance in various disorders by reviewing the autonomic system, its functions, laboratory assessments and plenty of scientific studies conducted over last few decades in various disorders involving yoga and autonomic functions. Although we have general idea as to how yoga modulates the sympathovagal balance improving clinical condition, we need to have more long-term, in-depth, well-controlled studies not only to understand these complex interactions of yoga and autonomic functions but also to provide scientific credibility to yoga research in world's scientific community. These steps would hopefully enable mankind to lead the disease-free healthy life style effectively to achieve meaningfully the purpose of one's life.
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M., Richard, Mark D., Rachel E., Vernon Bond, and Kim L. "Associations of Metabolic Variables with Electrocardiographic Measures of Sympathovagal Balance in Healthy Young Adults." In Advances in Electrocardiograms - Methods and Analysis. InTech, 2012. http://dx.doi.org/10.5772/21897.

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Lin, Zhiyue, and Richard W. "Changes of Sympathovagal Balance Measured by Heart Rate Variability in Gastroparetic Patients Treated with Gastric Electrical Stimulation." In Advances in Electrocardiograms - Methods and Analysis. InTech, 2012. http://dx.doi.org/10.5772/23052.

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Abdulrhman Al Abdulgader, Abdullah. "Inherited Ventricular Arrhythmias, the Channelopathies and SCD; Current Knowledge and Future Speculation – Epidemiology and Basic Electrophysiology." In Sudden Cardiac Death. IntechOpen, 2020. http://dx.doi.org/10.5772/intechopen.92073.

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This chapter represents advanced scientific exploration in the different disciplines of SCD and channelopathy. Epidemiology of SCD and channelopathy is given special attention. The essence of detailed electrophysiological bases of the different diseases of channelopathies and the diverse cellular pathways mandated detailed discussion that can open the closed doors that we faced to the next generation(s). Special sections have been devoted to spatial as well as temporal heterogeneity of the cardiac action potential. Genetic heterogeneity and allelic heterogeneity are two prominent findings of channelopathies that confirm the fact of the major overlap in the field. The way we present the clinical findings is a true call for the next generation(s) of clinicians and researchers to revolutionize the field in the near future. Detailed management plans based on the up to date basic sciences findings for the different channelopathies give better therapeutic options for the clinicians in the field. Unique to this chapter is the new directions to look for channelopathies beyond the human body. The new understanding of the psychophysiological well-being of HRV and the sympathovagal balance extending to cosmic resonances and its possible effect on cardiac ion channels carries new era of promising preventive, diagnostic and therapeutic options.
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Oldenburg, Olaf. "Sleep apnoea: definition, prevalence, and role in cardiovascular diseases." In ESC CardioMed, 1058–62. Oxford University Press, 2018. http://dx.doi.org/10.1093/med/9780198784906.003.0256.

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Abstract:
The two main forms of sleep apnoea are obstructive (OSA) and central (CSA) sleep apnoea. In the presence of cardiovascular disease, CSA can manifest as Cheyne–Stokes respiration. OSA and CSA both can cause substantial oxygen desaturations, alterations in sympathovagal balance, neurohumoral activation, and endothelial dysfunction; OSA also causes marked negative intrathoracic pressure swings, which have a number of undesirable cardiovascular consequences (e.g. increased cardiac transmural pressure gradients, sympathetic activation). OSA is the most common type of sleep apnoea in the general population, but rates are higher in cardiovascular disease. CSA is particularly prevalent in patients with underlying cardiac, neurological, or renal disease. Typical OSA risk factors include obesity, male gender, smoking, and age, while the severity of heart failure is predictive of the prevalence and severity of CSA. Recognition and diagnosis of sleep apnoea can be difficult because patients often do not present with typical symptoms. Sleep apnoea is an important co-morbidity in cardiovascular disease because of links with a number of conditions. OSA is an independent risk factor for the development of hypertension and heart failure, and has a negative impact on the effectiveness of treatments for atrial fibrillation. OSA has also been linked with the development of coronary artery disease, worse outcomes after acute myocardial infarction, and higher event rates in patients with coronary artery disease. CSA with Cheyne–Stokes respiration has important links with heart failure and is a risk factor for poor outcome even when other therapies are optimized. Cheyne–Stokes respiration has also been documented in stroke patients, increasing stroke severity and worsening prognosis.
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Conference papers on the topic "Sympathovagal balance"

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Eyal, Shuli, and Anda Baharav. "Mobile Based Study Links Insomnia and Sympathovagal Balance." In 2016 Computing in Cardiology Conference. Computing in Cardiology, 2016. http://dx.doi.org/10.22489/cinc.2016.212-504.

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Colak, Omer H., Suleyman Bilgin, and Ovunc Polat. "Analyze of sympathovagal balance on ventricular tachyarrhythmia patients using wavelet packet transform." In 2009 14th National Biomedical Engineering Meeting. IEEE, 2009. http://dx.doi.org/10.1109/biyomut.2009.5130251.

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Akar, Saime A., Sadik Kara, and Vedat Bilgic. "Analysis of sympathovagal balance in patients with major depressive disorder using wavelet packet transform." In 2015 37th Annual International Conference of the IEEE Engineering in Medicine and Biology Society (EMBC). IEEE, 2015. http://dx.doi.org/10.1109/embc.2015.7319798.

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Ghiasi, S., A. Greco, M. Nardelli, V. Catrambonel, R. Barbieri, EP Scilingo, and G. Valenza. "A New Sympathovagal Balance Index from Electrodermal Activity and Instantaneous Vagal Dynamics: A Preliminary Cold Pressor Study." In 2018 40th Annual International Conference of the IEEE Engineering in Medicine and Biology Society (EMBC). IEEE, 2018. http://dx.doi.org/10.1109/embc.2018.8512932.

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Roncato, Gabriela, Fabricio Fontoura, Fernan Spilimbergo, Gisela Meyer, Guilherme Watte, Walter Vargas, Danilo Berton, and Katya Rigatto. "Does inspiratory muscle training improve the sympathovagal balance and endothelial function in groups I and IV of pulmonary hypertension?" In ERS International Congress 2018 abstracts. European Respiratory Society, 2018. http://dx.doi.org/10.1183/13993003.congress-2018.pa3328.

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Spießhöfer, J., M. Gorbachevski, M. Boentert, and A. Giannoni. "Nocturnal adaptive servoventilation therapy does not decrease sympathetic drive in patients with systolic heart failure: differing effects of PAP and ASV therapy on sympathovagal balance in patients with CSA with and without heart failure." In 61. Kongress der Deutschen Gesellschaft für Pneumologie und Beatmungsmedizin e.V. Georg Thieme Verlag KG, 2020. http://dx.doi.org/10.1055/s-0039-3403077.

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