Results 1 to 10 of about 3,697,148 (198)

Circadian rhythm of heart rate and heart rate variability in pregnancy [PDF]

open access: yesnpj Women's Health
The autonomic nervous system (ANS) regulates physiological changes during pregnancy, supporting fetal development and homeostasis. Heart rate (HR) and heart rate variability (HRV) are well-established, non-invasive biomarkers of ANS function.
Mahkameh Rasouli   +8 more
doaj   +5 more sources

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   +3 more sources

Heart rate and heart rate variability of dairy cows with or without local anesthesia [PDF]

open access: yesJDS Communications
Heart rate variability analysis provides valuable insights into autonomic nervous system function but remains minimally explored in veterinary anesthesiology, particularly regarding its relationship with low-dose caudal epidural anesthesia in cattle ...
Zs. Bohák   +4 more
doaj   +2 more sources

Validation of nocturnal resting heart rate and heart rate variability in consumer wearables [PDF]

open access: yesPhysiological Reports
Modern wearable devices report several heart rate‐based nocturnal health metrics, including resting heart rate (RHR) and heart rate variability (HRV).
Michael B. Dial   +5 more
doaj   +2 more sources

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
ABSTRACT Shrews 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 ...
Yun Hee Chang   +2 more
openaire   +3 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

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   +1 more source

Circadian rhythm of heart rate and heart rate variability [PDF]

open access: yesArchives of Disease in Childhood, 2000
Measurements of heart rate variability (HRV) are increasingly used as markers of cardiac autonomic activity.To examine circadian variation in heart rate and HRV in children.A total of 57 healthy infants and children, aged 2 months to 15 years, underwent ambulatory 24 hour Holter recording.
Massin, M. M.   +4 more
openaire   +2 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

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