Results 71 to 80 of about 1,713,582 (410)
Impact of Heart Rate Fragmentation on the Assessment of Heart Rate Variability
Applied Sciences, 2020 Heart rate fragmentation (HRF) is a type of sinoatrial instability characterized by frequent (often every beat) appearance of inflection in the R-R interval time series, despite the electrocardiograms appearing to be sinus rhythm.
Junichiro Hayano +3 more
doaj +1 more source
Influence of a 100-mile ultramarathon on heart rate and heart rate variability
BMJ Open Sport & Exercise Medicine, 2021 Aims This study aimed to investigate the impact of an ultramarathon (UM) with a distance of 100 miles on heart rate (HR) and heart rate variability (HRV).Methods 28 runners (25 men and 3 women) underwent 24-hour Holter ECG monitoring 1 week before the UM,
Bernd Wolfarth +6 more
doaj +1 more source
Disentangling Respiratory Sinus Arrhythmia in Heart Rate Variability Records [PDF]
, 2018 Different measures of heart rate variability and particularly of respiratory sinus arrhythmia are widely used in research and clinical applications. Inspired by the ideas from the theory of coupled oscillators, we use simultaneous measurements of respiratory and cardiac activity to perform a nonlinear decomposition of the heart rate variability into ...
arxiv +1 more source
Effect of Meditation on Heart Rate Variability [PDF]
arXiv, 2021 The dynamics of the autonomic nervous system, a prime factor for variation of heart rate is modulated by lifestyle factors like meditation and breathing exercises. The effect of meditation (dhyana)practiced by disciples of Ramakrishna Mission(RKM) on the heart rate variability is examined.
arxiv
Heart rate variability and risk of agitation in Alzheimer’s disease: the Atherosclerosis Risk in Communities study [PDF]
, 2023 Agitation in Alzheimer’s disease is common and may be related to impaired emotion regulation capacity. Heart rate variability, a proposed index of autonomic and emotion regulation neural network integrity, could be associated with agitation propensity in
Heiss, Gerardo +8 more
core
Pitfalls of assessment of autonomic function by heart rate variability
Journal of Physiological Anthropology, 2019 Although analysis of heart rate variability is widely used for the assessment of autonomic function, its fundamental framework linking low-frequency and high-frequency components of heart rate variability with sympathetic and parasympathetic autonomic ...
J. Hayano, E. Yuda
semanticscholar +1 more source
Molecular Oncology, EarlyView.The study evaluated the function and therapeutic implications of PRAME in basal cell carcinoma (BCC) and squamous cell carcinoma (SCC). The findings demonstrate that PRAME impairs keratinocyte differentiation pathways. Furthermore, PRAME impairs anticancer response to retinoid compounds in BCC and SCC cells.
Brandon Ramchatesingh +6 more
wiley +1 more source
Napping and heart rate variability in elite athletes
Biology of SportSleep and autonomic nervous system (ANS) influence each other in a bidirectional fashion. Importantly, it has been proposed that sleep has a beneficial regulatory influence over cardiovascular activity, which is mostly controlled by autonomic regulation ...
Maher Souabni +6 more
doaj +1 more source
Case study: Adopting heart rate variability biofeedback to decrease workplace stress
Heart and Mind, 2018 Stress is associated with negative outcomes and we all make effort to avoid it. Workplace stress is associated with poor performance, and organizations desire optimal performance from employees.
Adrian Low, Isabella Wong
doaj +1 more source
Heart Rate Variability Predicts Cell Death and Inflammatory Responses to Global Cerebral Ischemia [PDF]
, 2012 This study examines the relationship between autonomic functioning and neuropathology following cardiac arrest (CA) in mice. Within 24 h of CA, parasympathetic cardiac control, as indexed by high frequency (HF) heart rate variability, rapidly decreases ...
Berntson, Gary G. +5 more
core +3 more sources