Results 21 to 30 of about 111,723 (272)
Missing-data imputation using wearable sensors in heart rate variability [PDF]
Bulletin of the Polish Academy of Sciences: Technical Sciences, 2020 The objective of this work is to set up a methodology that considers missing data from a connected heartbeat sensor in order to propose a good replacement methodology in the context of heart rate variability (HRV) computation. The framework is a research
A. Tlija, K. Węgrzyn-Wolska, D. Istrate
doaj +1 more source
The effect of heart rate variability biofeedback training on stress and anxiety: a meta-analysis [PDF]
, 2017 BACKGROUND: Some evidence suggests that heart rate variability (HRV) biofeedback might be an effective way to treat anxiety and stress symptoms. To examine the effect of HRV biofeedback on symptoms of anxiety and stress, we conducted a meta-analysis of ...
Curtiss, Joshua E. +2 more
core +1 more source
Journal of Education, Health and Sport, 2018 Background. Earlier we reported that in children with spastic forms of cerebral palsy (SFCP) after two-week course of rehabilitation by Kozyavkin© method reducing neural component of muscle tone (NCMT) stated in 79,3% cases while in 13,8% cases changes ...
Valeriy Y. Babelyuk +6 more
doaj +1 more source
Association between changes in heart rate variability during the anticipation of a stressful situation and the stress-induced cortisol response [PDF]
, 2018 Vagal activity - reflecting the activation of stress regulatory mechanisms and prefrontal cortex activation - is thought to play an inhibitory role in the regulation of the hypothalamus-pituitary-adrenal axis.
De Raedt, Rudi +2 more
core +1 more source
Effect of obstructive sleep apnea on the response to hypertension therapy
Clinical and Experimental Hypertension, 2017 Obstructive sleep apnea (OSA) often precedes cardiovascular disease, partly due to treatment resistant hypertension. The nocturnal apneas of OSA trigger increased sympathetic nervous discharge during both sleep and wakefulness.
Michael G. Ziegler +4 more
doaj +1 more source
Movement filtered heart rate variability (HRV) data from a chest-worn sensor
Current Directions in Biomedical Engineering, 2021 Recording of heart rate variability (HRV) is a noninvasive and continuous measurement method that allows investigating the autonomic nervous system (ANS) and its reaction to environmental influences.
Hanshans Christian +10 more
doaj +1 more source
My Life in HRV Biofeedback Research [PDF]
Applied Psychophysiology and Biofeedback, 2022 This paper reviews the published work of me along with my students and close colleagues on the topic of heart rate variability biofeedback (HRVB). It includes early research by Vaschillo documenting resonance characteristics of the baroreflex system that causes large oscillations in heart rate when breathing at resonance frequency, research on heart ...
openaire +2 more sources
Molecular epidemiology of human rhinovirus infections in Kilifi, coastal Kenya [PDF]
, 2012 This study reports pediatric surveillance over 3 years for human rhinovirus (HRV) at the District Hospital of Kilifi, coastal Kenya. Nasopharyngeal samples were collected from children presenting at outpatient clinic with no signs of acute respiratory ...
Agoti, Charles N. +8 more
core +1 more source
Journal of Education, Health and Sport, 2019 Background. In previous studies involving subjects of both sexes with dysfunction of the neuroendocrine-immune complex, we found that the weekly use of Naftussya as Truskavets’ and Pomyarky deposits generally has the same effect on its parameters.The ...
Nadiya O Sydoruk, Walery Zukow
doaj +1 more source
Is the algorithm used to process heart rate variability data clinically relevant? Analysis in male adolescents [PDF]
, 2016 OBJECTIVE: To analyze whether the algorithm used for the heart rate variability assessment (fast Fourier transform versus autoregressive methods) influenced its association with cardiovascular risk factors in male adolescents.
Bastos-Filho, Carmelo José Albanez +7 more
core +3 more sources