Physiological Understanding of HRV Components

Lombardi, Federico

doi:10.1002/9780470987483.ch5

Cited by 78 publications

(91 citation statements)

References 35 publications

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“…Polygraphs are used in legal work but not commonly in research applications. HRV has emerged as a major method of assessing autonomic activity because it is noninvasive, inexpensive, and offers real-time information about the influence of the two subdivisions of the ANS (Lombardi, 2002;Rajendra Acharya, Paul Joseph, Kannathal, Lim, & Suri, 2006;Stauss, 2003;Thayer & Brosschot, 2005). Research has shown that stress and fear increases SNS activity, whereas relaxation, meditation, and neutral water immersion decrease SNS activity and increase PNS (Ditto, Eclache, & Goldman, 2006;Mano, Iwase, Yamazaki, & Saito, 1985;Perini & Veicsteinas, 2003;Ziegelstein, 2007).…”

Section: Water Immersion and The Bodymentioning

confidence: 99%

Biophysiologic Effects of Warm Water Immersion

Becker¹,

Hildenbrand²,

Whitcomb³

et al. 2009

IJARE

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Section: Water Immersion and The Bodymentioning

confidence: 99%

Biophysiologic Effects of Warm Water Immersion

Becker¹,

Hildenbrand²,

Whitcomb³

et al. 2009

IJARE

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“…Increased cardiovascular variability is a recognized risk factor for cardiovascular diseases (Lombardi, 2002;Narkiewicz and Grassi, 2008;Parati et al, 2012) and its complications such as stroke (Lattanzi et al 2015a). Furthermore, Lattanzi and colleagues reported in aseries of clinical studies (Lattanzi et al, 2014a;2014b, 2015b) that patients suffering from Alzheimer disease exhibit greater BP variability compared to age-matched controls, and that greater SBP variability in this patient population predicted faster cognitive decline, supporting the concept that vascular disease aggravates cognitive impairment.…”

Section: Discussionmentioning

confidence: 89%

Over-expression of V1A receptors in PVN modulates autonomic cardiovascular control

Lozić

Tasić

Martin

et al. 2016

Pharmacological Research

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The hypothalamic paraventricular nucleus (PVN) is a key integrative site for the neuroendocrine control of the circulation and of the stress response. It is also a major source of the neuropeptide hormone vasopressin (VP), and co-expresses V1a receptors (V1aR). We thus sought to investigate the role of V1aR in PVN in cardiovascular control in response to stress.Experiments were performed in male Wistar rats equipped with radiotelemetric device. The right PVN was transfected with adenoviral vectors (Ads) engineered to over-express V1aR along with an enhanced green fluorescent protein (eGFP) tag. Control groups were PVN transfected with Ads expressing eGFP alone, or wild-type rats (Wt). Rats were recorded with and without selective blockade of V1aR (V1aRX) in PVN under both baseline and stressed conditions. Blood pressure (BP), heart rate (HR), their short-term variabilities, and baroreflex sensitivity (BRS) were evaluated using spectral analysis and the sequence method, respectively. Under baseline physiological conditions,V1aR rats exhibited reduced BRS and a marked increase of BP and HR variability during exposure to stress. These effects were all prevented by V1aRX pretreatment. In Wt rats, V1aRX did not modify cardiovascular parameters under baseline conditions, and prevented BP variability increase by stress.However, V1aRX pretreatment did not modify baroreflex desensitization by stress in either rat strain. It follows that increased expression of V1aR in PVN influences autonomic cardiovascular regulation and demarcates vulnerability to stress. We thus suggest a possible role of hypothalamic V1aR in cardiovascular pathology. KeywordsVasopressin, V1a receptor, paraventricular nucleus, adenoviral vector, baroreflex, blood pressure variability, heart rate variability Abbreviations BRS, baroreflex sensitivity; VLF, very low frequency short-term variability; LF, low frequency short-term variability; HF, high frequency short-term variability; VP, vasopressin;OT, oxytocin; OTR, oxytocin receptor; V1aR, vasopressin V1a receptor; V1bR, vasopressin V1b receptor; V2R, vasopressin V2 receptor; V1aRX, vasopressin V1a receptor antagonist, PVN, paraventricular nucleus; NTS, nucleus of the solitary tract; RVLM; rostroventrolateral medulla; IML, intermediolateral column of the spinal cord.

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“…The low level of the time domain measurements is related with reduced parasympathetic activity. Among the frequency domain measurements, LF shows the sympathetic and HF the parasympathetic activity [29]. The time and frequency-domain paramaters of HRV mirror to vagal activity, but not detect sympathetic activity according to other researcher [30].…”

Section: Heart Rate Variabilitymentioning

confidence: 90%

The Fluctuation in the Heart Rate Variability Throughout Ovulation Induction Cycle: Is the Case Different in Polycystic Ovary Syndrome?

Üçkuyu¹,

Toprak²,

Çiftçi³

et al. 2013

Gynecol Obstet

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Objective: Women with Polycystic Ovary Syndrome (PCOS) have an increased level of sympathetic nerve activity, which was identified by Heart Rate Variability (HRV). PCOS is a state of ovulatory dysfunction in which there may also develop an abnormal ovary response to gonadotropins. We aimed to compare the changes in the HRV of ovulatory women with PCOS and normoovulatory infertile women throughout their ovulation induction cycles. Methods:We included 38 infertile women in the study, 18 of them oligo/amenorrheic with PCOS and 20 eumenorrheic, who formed the control group. Using power spectral analysis, the HRV indices of the patients were examined in three phases of the ovulation induction cycle with gonadotropins. Results:The HRV indices on the menstrual and mid-luteal period were lower in the PCOS group compared to control group. In the PCOS group, the fluctuation was not observed in the HRV indices throughout the ovulation induction cycle. In the control group, the HRV indices were lower on the mid-luteal period and peri-ovulatory period compared to menstrual period. Conclusion:In anovulatory women with PCOS, HRV fluctuation is different from the normovulatory women throughout the ovulation induction cycles. There might be a link between the disturbed ovulation processes in PCOS and the reduced intra-cycle HRV fluctuation.

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Physiological Understanding of HRV Components

Cited by 78 publications

References 35 publications

Biophysiologic Effects of Warm Water Immersion

Biophysiologic Effects of Warm Water Immersion

Over-expression of V1A receptors in PVN modulates autonomic cardiovascular control

The Fluctuation in the Heart Rate Variability Throughout Ovulation Induction Cycle: Is the Case Different in Polycystic Ovary Syndrome?

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