Characterizing Blood Pressure, Heart Rate, Physical Activity, Circadian Rhythm and their Response to NOS Inhibitor and Substrate in CHF Rats with Telemetry

2004 ◽  
Vol 1 (2) ◽  
pp. 159-166 ◽  
Author(s):  
Weimin Zhang ◽  
Zhongyun Wang ◽  
Weiguo Zhang
Keyword(s):  
Physical Activity ◽  
Blood Pressure ◽  
Heart Rate ◽  
Circadian Rhythm ◽  
Nos Inhibitor

Physical Activity and the Circadian Rhythm of Blood Pressure

1979 ◽  
Vol 57 (s5) ◽  
pp. 291s-294s ◽  
Author(s):  
S. Mann ◽  
M. W. Millar Craig ◽  
D. I. Melville ◽  
V. Balasubramanian ◽  
E. B. Raftery
Keyword(s):  
Physical Activity ◽  
Blood Pressure ◽  
Heart Rate ◽  
Circadian Rhythm ◽  
Ambulatory Blood Pressure ◽  
Blood Pressure Monitoring ◽  
Circadian Variation ◽  
Bed Rest ◽  
Pressure Monitoring ◽  
Night Time

1. Ambulatory blood pressure monitoring was carried out in 10 subjects for a period of 48 h, the first or second 24 h part of which was selected randomly to be a period of complete bed rest. 2. Heart rate was significantly lower throughout the period of bed rest except for the period 04.00–08.00 hours, when there was little difference. 3. The circadian variation of blood pressure was reduced during the day of bed rest but this was mainly due to higher night-time pressures.

scholarly journals Circadian Rhythm of Blood Pressure of Dipper and Non-dipper Patients With Essential Hypertension: A Mathematical Modeling Approach

2021 ◽  
Vol 11 ◽  
Author(s):  
Javiera Cortés-Ríos ◽  
Maria Rodriguez-Fernandez
Keyword(s):  
Physical Activity ◽  
Blood Pressure ◽  
Heart Rate ◽  
Circadian Rhythm ◽  
Temporal Structure ◽  
Circadian Variation ◽  
Night Time ◽  
Normalized Error ◽  
Underlying Mechanisms ◽  
Worse Prognosis

Blood pressure in humans presents a circadian variation profile with a morning increase, a small postprandial valley, and a deeper descent during night-time rest. Under certain conditions, the nocturnal decline in blood pressure can be reduced or even reversed (non-dipper), which is related to a significantly worse prognosis than a normal fall pattern (dipper). Despite several advances in recent years, our understanding of blood pressure's temporal structure, its sources and mechanisms is far from complete. In this work, we developed an ordinary differential equation-based mathematical model capable of capturing the circadian rhythm of blood pressure in dipper and non-dipper patients with arterial hypertension. The model was calibrated by means of global optimization, using 24-h data of systolic and diastolic blood pressure, physical activity, heart rate, blood glucose and norepinephrine, obtained from the literature. After fitting the model, the mean of the normalized error for each data point was <0.2%, and confidence intervals indicate that all parameters were identifiable. Sensitivity analysis allowed identifying the most relevant parameters and therefore inferring the most important blood pressure regulatory mechanisms involved in the non-dipper status, namely, increase in sympathetic over parasympathetic nervous tone, lower influence of physical activity on heart rate and greater influence of physical activity and glucose on the systemic vascular resistance. In summary, this model allows explaining the circadian rhythm of blood pressure and deepening the understanding of the underlying mechanisms and interactions integrating the results of previous works.

scholarly journals Association between Objectively Measured Physical Activity and Arterial Stiffness in Children with Congenital Heart Disease

2021 ◽  
Vol 10 (15) ◽  
pp. 3266
Author(s):  
Laura Willinger ◽  
Leon Brudy ◽  
Renate Oberhoffer-Fritz ◽  
Peter Ewert ◽  
Jan Müller
Keyword(s):  
Physical Activity ◽  
Blood Pressure ◽  
Heart Rate ◽  
Congenital Heart Disease ◽  
Heart Disease ◽  
Arterial Stiffness ◽  
Systolic Blood Pressure ◽  
Congenital Heart ◽  
Z Score ◽  
Objectively Measured

Background: The association between physical activity (PA) and arterial stiffness is particularly important in children with congenital heart disease (CHD) who are at risk for arterial stiffening. The aim of this study was to examine the association between objectively measured PA and arterial stiffness in children and adolescents with CHD. Methods: In 387 children and adolescents with various CHD (12.2 ± 3.3 years; 162 girls) moderate-to-vigorous PA (MVPA) was assessed with the “Garmin vivofit jr.” for 7 consecutive days. Arterial stiffness parameters including pulse wave velocity (PWV) and central systolic blood pressure (cSBP) were non-invasively assessed by oscillometric measurement via Mobil-O-Graph®. Results: MVPA was not associated with PWV (ß = −0.025, p = 0.446) and cSBP (ß = −0.020, p = 0.552) in children with CHD after adjusting for age, sex, BMI z-score, peripheral systolic blood pressure, heart rate and hypertensive agents. Children with CHD were remarkably active with 80% of the study population reaching the WHO recommendation of average 60 min of MVPA per day. Arterial stiffness did not differ between low-active and high-active CHD group after adjusting for age, sex, BMI z-score, peripheral systolic blood pressure, heart rate and hypertensive agents (PWV: F = 0.530, p = 0.467; cSBP: F = 0.843, p = 0.359). Conclusion: In this active cohort, no association between PA and arterial stiffness was found. Longer exposure to the respective risk factors of physical inactivity might be necessary to determine an impact of PA on the vascular system.

EFFECTS OF AEROBIC EXERCISE ON THE CIRCADIAN RHYTHM OF HEART RATE AND BLOOD PRESSURE

2009 ◽  
Vol 26 (8) ◽  
pp. 1636-1646 ◽  
Author(s):  
Hideyuki Shiotani ◽  
Yoichiro Umegaki ◽  
Maiko Tanaka ◽  
Madoka Kimura ◽  
Hiroshi Ando
Keyword(s):  
Blood Pressure ◽  
Heart Rate ◽  
Circadian Rhythm ◽  
Aerobic Exercise

11 Circadian Rhythm of Core Temperature, Blood Pressure and Heart Rate in Hypothyroid and Normal Rats

2015 ◽  
pp. 55-59
Author(s):  
P De Remigis ◽  
P Cugini ◽  
F Halberg ◽  
S Sensi ◽  
D Scavo
Keyword(s):  
Blood Pressure ◽  
Heart Rate ◽  
Circadian Rhythm ◽  
Core Temperature

The Influence of Physical Activity on Arterial Pressure during Ambulatory Recordings in Man

1980 ◽  
Vol 58 (1) ◽  
pp. 115-117 ◽  
Author(s):  
D. B. Rowlands ◽  
T. J. Stallard ◽  
R. D. S. Watson ◽  
W. A. Littler
Keyword(s):  
Physical Activity ◽  
Blood Pressure ◽  
Heart Rate ◽  
Arterial Pressure ◽  
Ambulatory Blood Pressure ◽  
Physical Activities ◽  
Hypertensive Patients ◽  
Arterial Blood ◽  
Significant Difference ◽  
Hypotensive Therapy

1. Ambulatory blood pressure recordings were made over a 48 h period on six hypertensive patients. The conditions of study were standardized, particularly with regard to physical activity, and during one period of each day the patients were randomly allocated to be active or inactive. 2. Results show that blood pressure was highest during physical activity and lowest during sleep. There was no significant difference between the arterial pressures measured during the same physical activities carried out at the same time each day. However, during the same time on consecutive days when activity was randomized, there was a significant difference between the pressure recordings during physical activity compared with those during inactivity. Heart rate changes showed a similar trend during the randomized period. 3. Physical activity and sleep have a profound effect on continuous arterial blood pressure recordings and these are independent of time alone. These observations should be taken into account when using this ambulatory system to assess hypotensive therapy.

PS 11-52 HEALTHY OBESITY SUBJECTS WITH HYPERTENSION SHOWS FAVORABLE CIRCADIAN RHYTHM IN HEART RATE AND BLOOD PRESSURE COMPARED WITH PATHOLOGIC OBESITY

2016 ◽  
Vol 34 (Supplement 1) ◽  
pp. e348
Author(s):  
Eun Joo Cho ◽  
Byung Su Yoo ◽  
Mi Seung Shin ◽  
Ki Chul Sung ◽  
Eung Ju Kim ◽  
...  
Keyword(s):  
Blood Pressure ◽  
Heart Rate ◽  
Circadian Rhythm
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