scholarly journals Autonomic Influence on Heart Rate for Deep Breathing and Valsalva Maneuver in Healthy Subjects

2018 ◽  
Vol 56 (211) ◽  
pp. 670-673 ◽  
Author(s):  
Reena Kumari Jha ◽  
Amrita Acharya ◽  
Ojashwi Nepal
Keyword(s):  
Heart Rate ◽  
Nervous System ◽  
Autonomic Nervous System ◽  
Heart Rate Response ◽  
Valsalva Maneuver ◽  
Deep Breathing ◽  
Resting Heart Rate ◽  
Autonomic Nervous ◽  
Male Subjects ◽  
Deep Breathing Test

Introduction: The Autonomic nervous system is responsible for regulation and integration of visceral functions. Disturbance of autonomic nervous system play crucial role in pathogenesis and clinical course of many diseases. In the present study deep breathing test and valsalva maneuver have been described to monitor parasympathetic function genderwise. Methods: A cross-sectional study was conducted among 100 subjects, aged 18-25 years, from May to November 2017, in exercise physiology laboratory, Kathmandu University School of Medical Sciences, Chaukot, Kavre. Electrocardiograph recorded by AD instrument was used to calculate the resting heart rate and the heart rate response to deep breathing test and valsalva maneuver. Results: Heart rate response to deep breathing test (31.69±14.79 Vs. 36.08±18.65, P=0.195) and valsalva ratio (1.59±0.39 Vs. 1.69±0.54, P=0.314) tend to be higher in female than male subjects but not significant. The resting heart rate of females was significantly higher than that of males (84.37 ± 11.08 Vs. 78.43 ± 12.06, P<0.05). Heart rate was significantly increased during and decreased after valsalva maneuver in both male and female subjects. Conclusions: This study concludes that both deep breathing test and valsalva maneuver activates parasympathetic system inhealthy subjects. And also dominant parasympathetic activity was found in female comparison to male subjects.

scholarly journals Heart rate variability changes in mild-symptomatic, physically fit male in 4-6 weeks from the end of SARS-Cov-2 infection

2021 ◽  
Author(s):  
Mateusz Soliński ◽  
Agnieszka Pawlak ◽  
Monika Petelczyc ◽  
Teodor Buchner ◽  
Joanna Aftyka ◽  
...  
Keyword(s):  
Heart Rate ◽  
Heart Rate Variability ◽  
Nervous System ◽  
Autonomic Nervous System ◽  
Respiratory Rhythm ◽  
Frequency Component ◽  
Night Time ◽  
Control Male ◽  
Autonomic Nervous ◽  
Male Subjects

Abstract SARS-Cov-2 infection, due to inflammation processes, can affect autonomic nervous system and heart rate variability (HRV) even after disease. Previous studies showed significant changes in HRV parameters in severe (including fatal) infection of SARS-Cov-2. However, HRV analysis for the asymptomatic or mild-symptomatic Covid-19 patients have not been reported. In this study, we suggested that there is an influence of a SARS-Cov-2 infection on the HRV in such patients after weeks form disease.Sixty-five ECG Holter recordings from young (mean age 22.6 ± 3.4 years), physically fit male subjects after 4-6 weeks from the second negative test (considered to be the beginning of recovery) and twenty-six control male subjects (mean age 23.2 ± 2.9 years) were considered in the study. Night-time RR time series were extracted from ECG signals. Selected linear, frequency as well as nonlinear HRV parameters were calculated. We found significant differences in Porta’s symbolic analysis parameters V0 and V2 (p<0.001), α2 (p<0.001), very low frequency component (VLF; p=0.022), and respiratory peak (from PRSA method; p=0.012). These differences may be caused by the changes of the parasympathetic autonomic nervous system as well as by the coupling of respiratory rhythm with heart rate due to an increase in pulmonary arterial vascular resistance.The results suggest that the changes in the HRV, thus autonomic nervous system, are measurable after a few weeks from the beginning of the recovery even in the post-Covid group of young and physically active population. We indicated HRV sensitive markers which could be used in the long-term monitoring of recovered patients.

Autonomic nervous system tests depend on resting heart rate and blood pressure

1991 ◽  
Vol 35 (1) ◽  
pp. 15-24 ◽  
Author(s):  
J.Gert van Dijk ◽  
Monique Koenderink ◽  
Aeilko H. Zwinderman ◽  
Joost Haan ◽  
Cor G.S. Kramer ◽  
...  
Keyword(s):  
Blood Pressure ◽  
Heart Rate ◽  
Nervous System ◽  
Autonomic Nervous System ◽  
Resting Heart Rate ◽  
Autonomic Nervous

The role of the autonomic nervous system in the resting tachycardia of human hyperthyroidism

1987 ◽  
Vol 72 (2) ◽  
pp. 239-244 ◽  
Author(s):  
Benedito C. Maciel ◽  
Lourenco Gallo ◽  
José A. Marin Neto ◽  
Léa M. Z. Maciel ◽  
Maria L. D. Alves ◽  
...  
Keyword(s):  
Heart Rate ◽  
Nervous System ◽  
Body Weight ◽  
Autonomic Nervous System ◽  
Resting Heart Rate ◽  
Autonomic Nervous ◽  
Intrinsic Heart Rate ◽  
Before And After ◽  
Pharmacological Blockade ◽  
Small Change

1. The mechanisms that control resting heart rate in hyperthyroidism were evaluated in six patients before and after treatment with propylthiouracil. 2. The patients were subjected to pharmacological blockade under resting conditions in two experimental sessions: first session, propranolol (0.2 mg/kg body weight); second session, atropine (0.04 mg/kg body weight) followed by propranolol (0.2 mg/kg body weight). All drugs were administered intravenously. 3. Resting heart rate was significantly reduced from 100 ± 6.5 beats/min to 72 ± 2.5 beats/min (P < 0.005) after clinical and laboratory control of the disease. After double blockade, intrinsic heart rate was reduced from 105 ± 6.8 beats/min before treatment to 98 ± 6.0 beats/min after treatment (P < 0.025). The reduction in heart rate caused by propranolol was not significantly different before (−13 ± 1.4 beats/min) and after (−9 ± 1.0 beats/min) propylthiouracil. In contrast, atropine induced a higher elevation of heart rate after treatment (45 ± 8.6 beats/min) than before treatment (26 ± 4.0 beats/min). 4. The present results suggest no appreciable participation of the sympathetic component of the autonomic nervous system in the tachycardia of hyperthyroidism, at least under the conditions of the present study. The small change observed in intrinsic heart rate, although significant, seems to indicate that this is not the most important mechanism involved in this tachycardia. 5. Our results suggest that an important reduction in the efferent activity of the parasympathetic component participates in the mechanisms that modify resting heart rate in hyperthyroidism.

scholarly journals Thirty loci identified for heart rate response to exercise and recovery implicate autonomic nervous system

2018 ◽  
Vol 9 (1) ◽  
Author(s):  
Julia Ramírez ◽  
Stefan van Duijvenboden ◽  
Ioanna Ntalla ◽  
Borbala Mifsud ◽  
Helen R Warren ◽  
...  
Keyword(s):  
Heart Rate ◽  
Nervous System ◽  
Autonomic Nervous System ◽  
Heart Rate Response ◽  
Autonomic Nervous ◽  
Response To Exercise

Efeito da manipulação vertebral sobre a modulação autonômica cardíaca

2016 ◽  
Vol 17 (5) ◽  
pp. 498
Author(s):  
Alyssa Conte Da Silva ◽  
Juliana Falcão Padilha ◽  
Jefferson Luiz Brum Marques ◽  
Cláudia Mirian De Godoy Marques
Keyword(s):  
Heart Rate ◽  
Heart Rate Variability ◽  
Nervous System ◽  
Autonomic Nervous System ◽  
Spinal Manipulation ◽  
Autonomic Modulation ◽  
Autonomic Nervous ◽  
Cardiac Autonomic Modulation

Introdução: Existem poucos estudos que evidenciam a manipulação vertebral relacionada à modulação autonômica cardíaca. Objetivo: Revisar a literatura sobre os efeitos da manipulação vertebral sobre a modulação autonômica cardíaca. Métodos: Foi realizada uma busca bibliográfica nas bases de dados da saúde Medline, Pubmed e Cinahl, no período correspondido entre setembro e novembro de 2014. Foram utilizados os descritores em inglês Spinal Manipulation, Cardiac Autonomic Modulation, Autonomic Nervous System, Heart Rate Variability, além de associações entre eles. Resultados: Foram encontrados 190 artigos, sendo excluídos 39 por serem repetidos, restando 151. Destes, 124 não se encaixaram nos critérios de inclusão e após leitura crítica e análise dos materiais foram selecionados 7 artigos. Grande parte dos estudos revelou que a manipulação da coluna, independente do segmento, demonstra alterações autonômicas, tanto em nível simpático quanto parassimpático. Conclusão: Existem diferentes metodologias para avaliação da modulação autonômica cardíaca, sendo a Variabilidade da Frequência cardíaca através do eletrocardiograma a mais utilizada. A manipulação vertebral exerceu influência, na maioria dos artigos, sobre a modulação autonômica cardíaca.Palavras-chave: manipulação da coluna, sistema nervoso autônomo, variabilidade da frequência cardíaca. 

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