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heart rate variability and sleep

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https://www.readbyqxmd.com/read/29100617/relationship-between-frequency-spectrum-of-heart-rate-variability-and-autonomic-nervous-activities-during-sleep-in-newborns
#1
Tsunenori Takatani, Yukihiro Takahashi, Ryota Yoshida, Ryuko Imai, Takao Uchiike, Masaharu Yamazaki, Midori Shima, Toshiya Nishikubo, Yoshito Ikada, Shinichi Fujimoto
INTRODUCTION: We analyzed the frequency spectrum of two neonatal sleep stages, namely active sleep and quiet sleep, and the relationship between these sleep stages and autonomic nervous activity in 74 newborns and 16 adults as a comparison. METHOD: Active and quiet sleep were differentiated by electroencephalogram (EEG) patterns, eye movements, and respiratory wave patterns; autonomic activity was analyzed using the RR interval of simultaneously recorded electrocardiogram (ECG) signals...
October 31, 2017: Brain & Development
https://www.readbyqxmd.com/read/29090400/no-effects-of-successful-bidirectional-smr-feedback-training-on-objective-and-subjective-sleep-in-healthy-subjects
#2
Olaf Binsch, Ellen S Wilschut, Martijn Arns, Charelle Bottenheft, Pierre J L Valk, Eric H G J M Vermetten
There is a growing interest in the application of psychophysiological signals in more applied settings. Unidirectional sensory motor rhythm-training (SMR) has demonstrated consistent effects on sleep. In this study the main aim was to analyze to what extent participants could gain voluntary control over sleep-related parameters and secondarily to assess possible influences of this training on sleep metrics. Bidirectional training of SMR as well as heart rate variability (HRV) was used to assess the feasibility of training these parameters as possible brain computer interfaces (BCI) signals, and assess effects normally associated with unidirectional SMR training such as the influence on objective and subjective sleep parameters...
October 31, 2017: Applied Psychophysiology and Biofeedback
https://www.readbyqxmd.com/read/29067142/intermittent-96-hour-auricular-electroacupuncture-for-hot-flashes-in-patients-with-prostate-cancer-a-pilot-study
#3
Tyvin Rich, Gerald W Porter, Luisel Ricks-Santi, Tzvi Milshtein, Thomas Corbin
Objective: The hot flash is a common vasomotor disorder that causes distress in menopausal women and that can be debilitating in men with prostate cancer who are treated with androgen deprivation therapy (ADT). The utility of auricular electroacupuncture (AEA) was tested exclusively for a small cohort of men with ADT-induced vasomotor symptoms while the men underwent a course of curative radiotherapy. Materials and Methods: Prior to and during radiotherapy treatment, men with vasomotor symptoms were given repeated questionnaires regarding severity and frequency of hot flashes, quality of life (QoL), and sleep over a 6-week span of an AEA protocol...
October 1, 2017: Medical Acupuncture
https://www.readbyqxmd.com/read/29064336/the-effect-of-dim-light-at-night-on-cerebral-hemodynamic-oscillations-during-sleep-a-near-infrared-spectroscopy-study
#4
Tae-Joon Kim, Byeong Uk Lee, Jun-Sang Sunwoo, Jung-Ick Byun, Jangsup Moon, Soon-Tae Lee, Keun-Hwa Jung, Kon Chu, Manho Kim, Jong-Min Lim, Eunil Lee, Sang Kun Lee, Ki-Young Jung
Recent studies have reported that dim light at night (dLAN) is associated with risks of cardiovascular complications, such as hypertension and carotid atherosclerosis; however, little is known about the underlying mechanism. Here, we evaluated the effect of dLAN on the cerebrovascular system by analyzing cerebral hemodynamic oscillations using near-infrared spectroscopy (NIRS). Fourteen healthy male subjects underwent polysomnography coupled with cerebral NIRS. The data collected during sleep with dim light (10 lux) were compared with those collected during sleep under the control dark conditions for the sleep structure, cerebral hemodynamic oscillations, heart rate variability (HRV), and their electroencephalographic (EEG) power spectrum...
October 24, 2017: Chronobiology International
https://www.readbyqxmd.com/read/29060487/blood-pressure-and-cardiovascular-parameters-during-sleep-arousals
#5
Sobhan Salari Shahrbabaki, Beena Ahmed, Thomas Penzel, Dean Cvetkovic
Sleep arousal is generally known as a transient episode of wakefulness into the sleepiness. Sleep arousals can be classified based on their association and accompany with pathological episodes. In this paper, our objective was to find out whether various types of sleep arousals influence on blood pressure and Heart Rate Variability (HRV). We analysed continuous Diastolic and Systolic Blood Pressures (DBP and SBP), Pulse Transit Time (PTT) as well as High and Low Frequency components (HF and LF) of HRV in different types of arousals...
July 2017: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/29060387/wearable-ppg-sensor-based-alertness-scoring-system
#6
Jishnu Dey, Tanmoy Bhowmik, Saswata Sahoo, Vijay Narayan Tiwari
Quantifying mental alertness in today's world is important as it enables the person to adopt lifestyle changes for better work efficiency. Miniaturized sensors in wearable devices have facilitated detection/monitoring of mental alertness. Photoplethysmography (PPG) sensors through Heart Rate Variability (HRV) offer one such opportunity by providing information about one's daily alertness levels without requiring any manual interference from the user. In this paper, a smartwatch based alertness estimation system is proposed...
July 2017: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/29060360/heart-rate-variability-in-patients-with-major-depressive-disorder-and-healthy-controls-during-non-rem-sleep-and-rem-sleep
#7
Hyunbin Kwon, Heenam Yoon, Dawoon Jung, Sangho Choi, Jaewon Choi, Yujin Lee, Do-Un Jeong, Kwangsuk Park
The objectives of this study are to investigate heart rate variability (HRV) in major depressive disorder patients (MDD) and healthy controls during different sleep stages, and to examine the association of HRV during sleep and depression severity. Polysomnography was recorded from 15 depressive patients with a higher beck depression inventory index (BDI > 25, H-BDI-D), 15 depressive patients with a lower BDI index (BDI ≤ 25, L-BDI-D) and 15 healthy controls. HRV was calculated during the first three rapid eye movements (REM) periods and non-REM stages (i...
July 2017: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/29059210/measures-of-cardiovascular-autonomic-activity-in-insomnia-disorder-a-systematic-review
#8
REVIEW
Marina-Marinela Nano, Pedro Fonseca, Rik Vullings, Ronald M Aarts
BACKGROUND: Insomnia disorder is a widespread sleep disorder with a prevalence of approximately 10%. Even though the link between insomnia and cardiovascular activity is not exactly clear, it is generally assumed that cardiovascular autonomic modifications could occur as a result of sleeplessness, or, alternatively, that autonomic alterations could be an expression of a hyper-arousal state. This review investigates whether cardiovascular measures are different between insomniacs and controls...
2017: PloS One
https://www.readbyqxmd.com/read/29057762/fluctuations-in-heart-rate-variability-of-health-care-workers-during-four-consecutive-extended-work-shifts-and-recovery-during-rest-and-sleep
#9
Elisabeth M Goffeng, Karl-Christian Nordby, Mika P Tarvainen, Susanna Järvelin-Pasanen, Anthony Wagstaff, Lars Ole Goffeng, Merete Bugge, Øivind Skare, Jenny-Anne Sigstad Lie
The aim of this study was to investigate fluctuations in heart rate variability (HRV), which reflect autonomic nervous system (ANS) function and potential psychological and physical strain, among 24 health care workers during work and sleep during four consecutive extended work shifts. Data included 24/36/12 hours of HRV measurements, two logbooks, and a questionnaire. A cross-shift/cross-week design was applied. HRV was measured during work, leisure time, and sleep. The HRV data included time-domain [mean RR, standard deviation of normal to normal R-R intervals (SDNN), and root mean square of the successive differences (RMSSD)] and frequency-domain [low frequency (LF)/high frequency (HF) ratio] parameters...
October 21, 2017: Industrial Health
https://www.readbyqxmd.com/read/29053066/different-times-of-day-do-not-change-heart-rate-variability-recovery-after-light-exercise-in-sedentary-subjects-24%C3%A2-hours-holter-monitoring
#10
Eliza Prodel, Tiago Peçanha, Lilian Pinto Da Silva, Rogério Baumgratz De Paula, Daniel Godoy Martinez, Jorge Roberto Perrout De Lima, Mateus Camaroti Laterza
Incidence of cardiovascular events follows a circadian rhythm with peak occurrence during morning. Disturbance of autonomic control caused by exercise had raised the question of the safety in morning exercise and its recovery. Furthermore, we sought to investigate whether light aerobic exercise performed at night would increase HR and decrease HRV during sleep. Therefore, the aim of this study was to test the hypothesis that morning exercise would delay HR and HRV recovery after light aerobic exercise, additionally, we tested the impact of late night light aerobic exercise on HR and HRV during sleep in sedentary subjects...
October 20, 2017: Chronobiology International
https://www.readbyqxmd.com/read/29040884/heart-rate-variability-feature-selection-in-the-presence-of-sleep-apnea-an-expert-system-for-the-characterization-and-detection-of-the-disorder
#11
Sofía Martín-González, Juan L Navarro-Mesa, Gabriel Juliá-Serdá, Jan F Kraemer, Niels Wessel, Antonio G Ravelo-García
We introduce a sleep apnea characterization and classification approach based on a Heart Rate Variability (HRV) feature selection process, thus focusing on the characterization of the underlying process from a cardiac rate point of view. Therefore, we introduce linear and nonlinear variables, namely Cepstrum Coefficients (CC), Filterbanks (Fbank) and Detrended Fluctuation Analysis (DFA). Logistic Regression, Linear Discriminant Analysis and Quadratic Discriminant Analysis were used for classification purposes...
October 7, 2017: Computers in Biology and Medicine
https://www.readbyqxmd.com/read/29037619/evidence-based-effects-of-yoga-practice-on-various-health-related-problems-of-elderly-people-a-review
#12
A Mooventhan, L Nivethitha
More than 50% of the elderly above 60 years of age suffer from chronic medical conditions, the prevalence of which increases with age. Though Yoga has been reported as an effective modality in improving various physical and psychological aspects of elderly populations, a comprehensive review of Yoga and its effects on various health related problems of elderly populations has not yet been reported. Hence, we performed PubMed/Medline search to review relevant articles, using keyword "yoga and elderly". Relevant articles published since inception till 6th October 2016 were included for the review...
October 2017: Journal of Bodywork and Movement Therapies
https://www.readbyqxmd.com/read/29035709/heart-rate-variability-and-salivary-cortisol-in-very-preterm-children-during-school-age
#13
Natalie Urfer-Maurer, Sebastian Ludyga, Tobias Stalder, Serge Brand, Edith Holsboer-Trachsler, Markus Gerber, Alexander Grob, Peter Weber, Sakari Lemola
The autonomic nervous system (ANS) plays a major role in the human stress response and reflects physical and psychological adaptability to a changing environment. Long-term exposure to early life stressors may alter the function of the ANS. The present study examines differences in the ANS between children born very preterm and full-term as well as the association between the ANS and the hypothalamic-pituitary-adrenal (HPA) axis, the other main branch of the human stress system. Fifty-four healthy children born very preterm (<32nd gestational week) and 67 full-term children aged 7-12 years provided data for the present study...
October 5, 2017: Psychoneuroendocrinology
https://www.readbyqxmd.com/read/29035100/serum-lipid-level-and-lifestyles-are-associated-with-carotid-femoral-pulse-wave-velocity-among-adults-4-4-year-prospectively-longitudinal-follow-up-of-a-clinical-trial
#14
XiaoXiao Zhao, Hongyu Wang, LiuJin Bo, Hongwei Zhao, Lihong Li, Yingyan Zhou
Lifestyle modifications are recommended as the initial treatment for high blood pressure. The influence of dyslipidemia might be via moderate arterial stiffness, which results in hypertension and cardiovascular disease. We used data from a subgroup of the lifestyle, level of serum lipids/carotid femoral-pulse wave velocity (CF-PWV) Susceptibility BEST Study, a population-based study of community-dwelling adults aged 45-75 years. The serum lipid level and CF-PWV were measured at baseline, and lifestyle such as smoking status, sleeping habits, and the level of oil or salt intake was determined with the use of a validated questionnaire during follow-up...
October 16, 2017: Clinical and Experimental Hypertension: CHE
https://www.readbyqxmd.com/read/29023736/an-investigation-of-fetal-behavioural-states-during-maternal-sleep-in-healthy-late-gestation-pregnancy-an-observational-study
#15
Peter R Stone, Wendy Burgess, Jordan McIntyre, Alistair J Gunn, Christopher A Lear, Laura Bennet, Edwin A Mitchell, John M D Thompson
BACKGROUND: Fetal behavioural states (FBS) are measures of fetal wellbeing. Maternal position affects FBS with supine being associated with an increased likelihood of fetal quiescence consistent with the human fetus adapting to a lower oxygen consuming state. A number of studies now confirm the association of sleep position with risk of late intrauterine death. We designed this study to observe the effects of maternal sleep positions overnight in healthy late gestation pregnancy. METHOD: Twenty nine healthy women had continuous fetal ECG recordings overnight...
October 11, 2017: Journal of Physiology
https://www.readbyqxmd.com/read/29019051/the-link-between-narcolepsy-and-autonomic-cardiovascular-dysfunction-a-translational-perspective
#16
REVIEW
Chiara Berteotti, Alessandro Silvani
Narcolepsy is a rare disease that entails excessive daytime sleepiness, often associated with sudden episodes of muscle weakness known as cataplexy. Narcolepsy with cataplexy (NC) is due to the loss of hypothalamic neurons that release the neuropeptides orexin A and B. Orexin neuron projections prominently target brain structures involved in wake-sleep state switching and the central autonomic network. This review provides an updated summary of the links between NC and autonomic cardiovascular dysfunction from a translational perspective...
October 10, 2017: Clinical Autonomic Research: Official Journal of the Clinical Autonomic Research Society
https://www.readbyqxmd.com/read/29018813/cardiovascular-consequences-of-repetitive-arousals-over-the-entire-sleep-duration
#17
Yanyan Wu, Rong Huang, Xu Zhong, Yi Xiao
OBJECTIVES: To explore the cardiovascular effects of nightlong repetitive arousals (RA). METHODS: Twenty healthy subjects participated in two consecutive sleep studies. The first one was free of intervention and the second study involved repetitive arousals induced by acoustical stimuli. Blood pressure, heart rate variability (HRV), arterial stiffness index (ASI), and serum markers including nitric oxide (NO), endothelin-1 (ET-1), C-reactive protein (CRP), interleukin-6 (IL-6), tumor necrosis factor-α (TNF-α), and vascular endothelial growth factor (VEGF) were studied...
2017: BioMed Research International
https://www.readbyqxmd.com/read/29016478/subjective-and-objective-responses-to-two-rugby-7-s-world-series-competitions
#18
Peter M Fowler, Andrew Murray, Abdulaziz Farooq, Nick Lumley, Lee Taylor
The purpose was to examine the utility of subjective and objective measures of player preparedness, interpreted at both a group and individual level, during two consecutive competitions of the World Rugby Sevens Series (WRSS). Subjective (sleep, energy and muscle soreness ratings) and objective [heart rate (HR) at rest (HRREST) and in response to submaximal exercise (HREX)] measures were obtained from 16 male Rugby-7s players from one team for three consecutive days (D1-3) at home (HOME) and upon arrival at four tournament (T1-4) locations (T1-New Zealand and T2-USA; T3-Hong Kong and T4-Tokyo) across two WRSS competitions (two tournaments per competition) separated by 1 month...
October 7, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28989070/personal-level-exposure-to-environmental-temperature-is-a-superior-predictor-of-endothelial-dependent-vasodilatation-than-outdoor-ambient-level
#19
Chinedu Ejike, Lu Wang, Mochuan Liu, Wei Wang, Masako Morishita, Robert L Bard, Wei Huang, Jack Harkema, Sanjay Rajagopalan, Robert D Brook
Environmental temperatures influence cardiovascular physiology. However, the majority of time is spent indoors, making outdoor-ambient temperatures inaccurate estimates of true exposures encountered by most individuals. We evaluated in 50 healthy adults the associations between previous 7-day outdoor-ambient (four occasions) and prior 24-hour personal-level (two occasions) environmental temperature exposures with blood pressure, heart rate variability, sleep parameters, and endothelial-dependent vasodilatation (brachial flow-mediated dilatation [FMD]) using generalized estimating equations...
November 2017: Journal of the American Society of Hypertension: JASH
https://www.readbyqxmd.com/read/28982776/blood-pressure-response-to-cpap-treatment-in-subjects-with-obstructive-sleep-apnoea-the-predictive-value-of-24-h-ambulatory-blood-pressure-monitoring
#20
Anabel L Castro-Grattoni, Gerard Torres, Montserrat Martínez-Alonso, Ferran Barbé, Cecilia Turino, Alicia Sánchez-de-la-Torre, Anunciacion Cortijo, Joaquin Duran-Cantolla, Carlos Egea, Gonzalo Cao, Manuel Sánchez-de-la-Torre
The reduction in blood pressure (BP) with continuous positive airway pressure (CPAP) is modest and highly variable. In this study, we identified the variables that predict BP response to CPAP.24-h ambulatory BP monitoring (ABPM), C-reactive protein (CRP), leptin, adiponectin and 24-h urinary catecholamine were measured before and after 6 months of CPAP in obstructive sleep apnoea (OSA) patients.Overall, 88 middle-aged, obese male patients with severe OSA (median apnoea-hypopnoea index 42 events·h(-1)) were included; 28...
October 2017: European Respiratory Journal: Official Journal of the European Society for Clinical Respiratory Physiology
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