Results 1 to 10 of about 15,546,507 (365)

Heart rate and respiratory rate influence on heart rate variability repeatability: effects of the correction for the prevailing heart rate [PDF]

open access: yesFrontiers in Physiology, 2016
Background: Since heart rate variability (HRV) is associated with average heart rate (HR) and respiratory rate (RespRate), alterations in these parameters may impose changes in HRV.
Jakub Sławomir Gąsior   +5 more
doaj   +4 more sources

Donkey Heart Rate and Heart Rate Variability: A Scoping Review

open access: yesAnimals, 2023
Heart rate (HR) and heart rate variability (HRV) are commonly used physiological measures in animals. While several studies exist on horse HRV, less information is available for donkeys.
Marta De Santis   +6 more
doaj   +3 more sources

Investigating asymmetry in fetal and maternal heart rate accelerations and decelerations [PDF]

open access: yesScientific Reports
This study investigates the asymmetry in heart rate (HRA) during fetal development in the fetus and mother. R-R intervals from noninvasive fetal and maternal ECG signals from 102 pregnant women whose gestational age ranges from 20 to 40 weeks were ...
Rafał Pawłowski   +4 more
doaj   +2 more sources

Bone mechanical loading reduces heart rate and increases heart rate variability in mice [PDF]

open access: yesBone Reports
Cardiovascular disease and osteoporosis are clinically associated. Bone adapts to mechanical forces by altering its overall structure and mass. In response to mechanical strain bone cells release signaling molecules and activate the nervous system.
Julian A. Vallejo   +6 more
doaj   +1 more source

RapidHRV: an open-source toolbox for extracting heart rate and heart rate variability [PDF]

open access: yesPeerJ, 2022
Heart rate and heart rate variability have enabled insight into a myriad of psychophysiological phenomena. There is now an influx of research attempting using these metrics within both laboratory settings (typically derived through electrocardiography or
Peter A. Kirk   +3 more
doaj   +2 more sources

Anatomy of the Heart with the Highest Heart Rate [PDF]

open access: yesJournal of Anatomy, 2021
ABSTRACTShrews occupy the lower extreme of the seven orders of magnitude mammals range in size. Their hearts are large relative to body weight and heart rate can exceed a thousand beats a minute. To investigate whether cardiac traits that are typical mammalian scale to these extremes, we assessed the heart of three species of shrew (genusSorex ...
Yun Hee Chang   +2 more
openaire   +4 more sources

Heart rate profiles and heart rate variability during scuba diving

open access: yesSwiss Medical Weekly, 2021
AIMS: The aim of the present study was to describe heart rate profiles and heart rate variability patterns in non-selected scuba divers of different ages under non-experimental real-world conditions.
Claudine Schaller   +7 more
doaj   +1 more source

The Heart Rate

open access: yesThe American Journal of Psychology, 1933
"This monograph is based on continuous observations with the cardiotachometer."--Pref. ; "First printing, June 1932." ; Bibliography: p. 149-160. ; Mode of access: Internet.
J. P.   +2 more
openaire   +4 more sources

The relation of ambulatory heart rate with all-cause mortality among middle-aged men : a prospective cohort study [PDF]

open access: yes, 2015
The aim of this study was to investigate the association between average 24-hour ambulatory heart rate and all-cause mortality, while adjusting for resting clinical heart rate, cardiorespiratory fitness, occupational and leisure time physical activity as
Clays, Els   +7 more
core   +7 more sources

Postoperative effects of bariatric surgery on heart rate recovery and heart rate variability [PDF]

open access: yesKosin Medical Journal, 2022
Background Several studies have reported associations between obesity and autonomic dysfunction. However, little research has investigated the effect of bariatric surgery on heart rate recovery (HRR) in the treadmill test and heart rate variability (HRV)
Han Su Park   +6 more
doaj   +1 more source

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