Alterations in the autonomic control of heart rate variability in patients with anorexia or bulimia nervosa: Correlations between sympathovagal activity, clinical features, and leptin levels

2007 ◽  
Vol 30 (5) ◽  
pp. 356-362 ◽  
Author(s):  
G. Murialdo ◽  
M. Casu ◽  
M. Falchero ◽  
A. Brugnolo ◽  
V. Patrone ◽  
...  
Keyword(s):  
Heart Rate ◽  
Heart Rate Variability ◽  
Bulimia Nervosa ◽  
Clinical Features ◽  
Autonomic Control ◽  
Sympathovagal Activity

scholarly journals Cortisol Levels and Autonomic Control of Heart Rate in Healthy Subjects

2017 ◽  
Vol 17 (2) ◽  
pp. 5-14 ◽  
Author(s):  
Milana Drumond Ramos Santana ◽  
Eli Carlos Martiniano ◽  
Larissa Raylane Lucas Monteiro ◽  
Maria Do Socorro Santos De Oliveira ◽  
Vitor E. Valenti ◽  
...  
Keyword(s):  
Blood Pressure ◽  
Heart Rate ◽  
Heart Rate Variability ◽  
Salivary Cortisol ◽  
Healthy Subjects ◽  
Autonomic Control ◽  
Autonomic Modulation ◽  
Cardiac Autonomic Modulation ◽  
Cortisol Levels ◽  
Modulation Methods

AbstractIntroduction: There is an increase in level of stress in the general population because of the social, personal and professional demands. Currently, there are only simple tools that can safely measure this stress such as levels of cortisol and heart rate variability (HRV). Objective: To analyze the relationship between salivary cortisol and the cardiac autonomic modulation. Methods: A total of fifty-one male and female subjects between 18 and 40 years old were evaluated. Saliva collection was achieved for the salivary cortisol dosage. The collection was performed through the SalivetteR tube. After this collection, the median cortisol levels (0.24 ug/dl) were analyzed and the volunteers were divided into two groups: i) cortisol below the mediane ii) cortisol above the median. After this division, each group consisted of 25 volunteers and then was verified the following information: age, gender, weight, height, body mass index (BMI), blood pressure. Shortly thereafter was assessment of cardiac autonomic modulation por meio da HRV. The Polar RS800cx heart rate receiver was placed on the chest of the volunteers, in the vicinity of the distal third of the sternum. The volunteers were instructed to remain in rest with spontaneous breathing in dorsal position for 20 minutes. HRV analysis included geometric, time and frequency domain indices. Results: There were no statistical differences for the two groups regarding systolic and diastolic blood pressure, heart rate, RR intervals or linear and frequency indices for the volunteers. In addition, also there was no correlation the cortisol with the analyzed variables (SAP, p=0.460; DAP, p = 0.270; HR, p = 0.360; RR, p = 0.380; SDNN, p = 0.510; rMSSD, p = 0.660; pNN50, p = 0.820; RRtri, p = 0.170; TINN, p = 0.470; SD1, p = 0.650; SD2, p = 0.500; LF [ms2], p = 0.880; LF [nu], p = 0.970; HF [ms2], p = 0.870; HF [nu], p = 0.960; LF/HF, p = 0.380 Conclusion: Heart rate variability autonomic control was unchanged in healthy subjects with physiological distribution of salivary cortisol levels. There was no association between normal salivary cortisol and resting autonomic regulation of heart rate.

scholarly journals Assessment of the impact of 10-day intermittent hypoxia on the autonomic control measured by heart rate variability

2018 ◽  
Vol 105 (4) ◽  
pp. 386-396 ◽  
Author(s):  
ZZ Taralov ◽  
KV Terziyski ◽  
PK Dimov ◽  
BI Marinov ◽  
SS Kostianev
Keyword(s):  
Heart Rate ◽  
Heart Rate Variability ◽  
Nervous System ◽  
Parasympathetic Nervous System ◽  
Autonomic Control ◽  
Total Power ◽  
Hypoxic Exposure ◽  
Intermittent Hypoxic Training ◽  
Parasympathetic Nervous System Activity ◽  
The Impact

Purpose The purpose of this study is to establish the alterations in the activity of the autonomic nervous system (ANS) via heart rate variability (HRV) in subjects exposed to 1 h of exogenous hypoxia for 10 consecutive days. Methods Twelve healthy non-smoker males at mean age of 29.8 ± 7.4 (mean ± SD) breathed hypoxic air delivered through hypoxicator (FiО2 = 12.3% ± 1.5%) for 1 h in 10 consecutive days. Pulse oximetry and electrocardiography were monitored during the visit and HRV was calculated for the entire 1-h hypoxic period. Results Comparing the last hypoxic visit to the first, subjects had higher standard deviation of normal-to-normal interbeat intervals (SDNNs) (65.7 ± 32.5 vs. 81.1 ± 32.0 ms, p = 0.013) and root mean square of successive R–R interval difference (RMSSD) (58.1 ± 30.9 vs. 76.5 ± 34.6 ms, p = 0.029) as well as higher lnTotal power (8.1 ± 1.1 vs. 8.5 ± 0.9 ms2, p = 0.015) and high frequency (lnHF) (6.8 ± 1.3 vs. 7.5 ± 1.2 ms2, p = 0.05) and lower LF/HF (2.4 ± 1.4 vs. 1.5 ± 1.0, p = 0.026). Changes in saturation (87.0 ± 7.1 vs. 90.8 ± 5.0%, p = 0.039) and heart rate (67.1 ± 8.9 vs. 62.5 ± 6.0 beats/min, p = 0.040) were also observed. Conclusions Intermittent hypoxic training consisting of 1-h hypoxic exposure for 10 consecutive days could diminish the effects of acute exogenous hypoxia on the ANS characterized by an increased autonomic control (SDNN and total power) with augmentation of the parasympathetic nervous system activity (increased RMSSD and HF and decreased LF/HF). Therefore, it could be applied as a pre-acclimatization technique aiming at an increase in the autonomic control and oxygen saturation in subjects with upcoming sojourn to high altitude.

Effects of drugs on the autonomic control of short-term heart rate variability

2001 ◽  
Vol 90 (1-2) ◽  
pp. 116-121 ◽  
Author(s):  
Jean-Luc Elghozi ◽  
Arlette Girard ◽  
Dominique Laude
Keyword(s):  
Heart Rate ◽  
Heart Rate Variability ◽  
Autonomic Control ◽  
Short Term

Involvement of Voltage-Dependent Ca2+ Channel β3 Subunit in the Autonomic Control of Heart Rate Variability

Pharmacology ◽  
2006 ◽  
Vol 76 (4) ◽  
pp. 170-179 ◽  
Author(s):  
Tsai-Wen Wu ◽  
Kyoichi Ono ◽  
Manabu Murakami ◽  
Toshihiko Iijima
Keyword(s):  
Heart Rate ◽  
Heart Rate Variability ◽  
Autonomic Control ◽  
Voltage Dependent

scholarly journals Time- and state-dependent analysis of autonomic control in narcolepsy: higher heart rate with normal heart rate variability independent of sleep fragmentation

2014 ◽  
Vol 24 (2) ◽  
pp. 206-214 ◽  
Author(s):  
Wisse P. van der Meijden ◽  
Rolf Fronczek ◽  
Robert H. A. M. Reijntjes ◽  
Eleonora P. M. Corssmit ◽  
Nienke R. Biermasz ◽  
...  
Keyword(s):  
Heart Rate ◽  
Heart Rate Variability ◽  
Autonomic Control ◽  
Sleep Fragmentation ◽  
Normal Heart ◽  
State Dependent ◽  
Normal Heart Rate

scholarly journals Utilização de cardiofrequencímetros para mensuração da Variabilidade da Frequência Cardíaca no repouso: uma revisão de literatura

2021 ◽  
Vol 10 (11) ◽  
pp. e575101120026
Author(s):  
Patrícia Castro ◽  
Tainah de Paula Lima ◽  
Roberto Miranda Ramos Costa ◽  
Felipe Amorim da Cunha ◽  
Patrícia dos Santos Vigário
Keyword(s):  
Heart Rate ◽  
Heart Rate Variability ◽  
Autonomic Control ◽  
Heart Rate Monitor ◽  
Cardiac Autonomic Control

A Variabilidade da Frequência Cardíaca (VFC) é um método não-invasivo utilizado para estimar o controle autonômico cardíaco que pode ser mensurada através do eletrocardiograma (ECG), método padrão-ouro. Dispositivos portáteis que tragam maior praticidade e com menor custo que o ECG, como os cardiofrequencímetros, são uma alternativa mais conveniente para a mensuração da VFC na prática clínica, porém é necessário que seus resultados sejam validados em diferentes populações. Objetivo: Analisar os estudos realizados sobre a validade dos cardiofrequencímetros em comparação com o ECG para mensuração da VFC no repouso em diferentes populações. Metodologia: Trata-se de uma revisão de literatura onde foram utilizados estudos publicados na base de dados do Pubmed e Scielo, sem limite inferior da data de publicação até o ano de 2021. Foram utilizados os seguintes descritores nos idiomas inglês e português: "heart rate variability" ou "cardiac autonomic control" ou "Electrocardiography" ou "Heart Rate", sendo associados aos termos “heart rate monitor” e "reproducibility" ou “validity” ou “agreement”. Resultados e discussão: Foram encontrados 15 estudos que avaliaram a validade de diferentes modelos de cardiofrequencímetros para a mensuração da VFC no repouso, em comparação com o ECG, em diferentes populações (adultos saudáveis, atletas, idosos, crianças, adolescentes obesos, indivíduos com lesão medular e idosos), assim como sua confiabilidade no teste-reteste de alguns dispositivos. Conclusão: Os estudos demonstraram que os diferentes modelos de cardiofrequencímetro podem ser utilizados como uma alternativa ao ECG para a mensuração da VFC, mesmo em diferentes populações.

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