Night‐time autonomic nervous system ultradian cycling and masticatory muscle activity

2019 ◽  
Vol 22 (S1) ◽  
pp. 107-112
Author(s):  
Laura R. Iwasaki ◽  
Luigi M. Gallo ◽  
Michala Markova ◽  
Stefan Erni ◽  
Hongzeng Liu ◽  
...  
Keyword(s):  
Nervous System ◽  
Autonomic Nervous System ◽  
Muscle Activity ◽  
Masticatory Muscle ◽  
Night Time ◽  
Autonomic Nervous ◽  
Masticatory Muscle Activity

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.

Interrelationship of inflammatory biomarkers with ambulatory heart rate phenotypes in a cohort of Nigerian chronic kidney disease patients compared with controls; findings from symbolic study

2020 ◽  
Vol 41 (Supplement_2) ◽  
Author(s):  
A.T Adeyanju ◽  
A.M Adeoye ◽  
B.T Osibowale ◽  
A Fakunle ◽  
A Aderonmu
Keyword(s):  
Chronic Kidney Disease ◽  
Heart Rate ◽  
Nervous System ◽  
Autonomic Nervous System ◽  
Kidney Disease ◽  
Inflammatory Biomarkers ◽  
Funding Source ◽  
Night Time ◽  
Autonomic Nervous ◽  
All Cause Mortality

Abstract Background Inflammatory biomarkers have been identified as strong independent risk factor for cardiovascular events outcome in chronic kidney disease. The positive effect of the autonomic nervous system on inflammatory biomarkers is also being explored. Using the Heart rate as a representative tool for autonomic activity, the exact heart rate metrics in 24 hours associated with increased level of inflammatory activity in chronic kidney disease needs to be assessed among people of African descent. Purpose This study assessed the associations between inflammatory biomarkers and the Heart Rates phenotypes in a population of chronic kidney disease patients compared with controls. Methods All the participants had a 24-hour ambulatory blood pressure monitoring done using SpaceLabs ABPM (Spacelab's Healthcare, Issaquah, WA) which was placed on the non-dominant hand and Cuff sizes were selected after measuring participants' non-dominant arm circumference. Blood samples were analyzed for fasting plasma glucose, lipid profile, electrolytes, urea and creatinine, C - reactive protein (CRP), White cell counts (WBC) and differentials. CRP group was classified as mild, moderate and severe. Heart rate dipping was estimate using formula (1- night time heart rate/daytime heart rate) x100. Normal dipping of heart rate was defined as &gt;10%. Estimated GFR was calculated using CKD-EPI Creatinine Equation and CKD was defined as eGFR&lt;60ml/min/1.73m2. The association between markers of inflammation, heart rate phenotypes and mortality was determined using univariate analysis. Logistic regression model was fitted to determine predictors of all – cause mortality. Results Four hundred and sixty consented participants comprising 231 (50.2%) women, 195 (42.4%) hypertensive without CKD, 98 (21.3%) normotensive and 167 (36.3%) CKD patients with mean age 49.42±13.54 years were analyzed. Compared with controls, greater proportion of CKD patients were non dippers with highest mean White blood cell count, neutrophil counts, and CRP; p&lt;0.05. The mean 24 Hr, daytime and night time heart rate were significantly highest among CKD patients &lt;0.0001. Non-dipping was associated with higher mean WBC, Neutrophils counts, and CRP. Most non-dippers were associated with moderate and severe CRP risk (72.8% vs 27.2%; P&lt;0.0001. Compared with inflammatory markers (CRP), non-dipping status was an independent determinant of all-cause mortality (OR 16.03, CI 2.57–100.1, p=0.003). Conclusion This study highlights a higher prevalence of heart rate non- dipping and inflammatory activities among people with CKD compared with controls. Non dipping status was associated with higher inflammatory activity and higher risk of death. These observations lend some insight into the roles of autonomic nervous system in the pathophysiological mechanisms that implicate inflammatory biomarkers in cardiovascular risk and event outcomes in chronic kidney disease patients. Funding Acknowledgement Type of funding source: Other. Main funding source(s): International society of hypertension

Intrinsic laryngeal muscle activity in response to autonomic nervous system activation

2013 ◽  
Vol 123 (11) ◽  
pp. 2756-2765 ◽  
Author(s):  
Leah B. Helou ◽  
Wei Wang ◽  
Robin C. Ashmore ◽  
Clark A. Rosen ◽  
Katherine Verdolini Abbott
Keyword(s):  
Nervous System ◽  
Autonomic Nervous System ◽  
Muscle Activity ◽  
Laryngeal Muscle ◽  
Autonomic Nervous ◽  
System Activation ◽  
Intrinsic Laryngeal Muscle
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