Reza Sadeghi, Tanvi Banerjee, John Hughes
Sleep quality (SQ) is one of the most well-known factors in daily work performance. Sleep is usually analyzed using polysomnography (PSG) by attaching electrodes to the bodies of participants, which is likely sleep destructive. As a result, investigating SQ using a more easy-to-use and cost-effective methodology is currently a hot topic. To avoid overfitting concerns, one likely methodology for predicting SQ can be achieved by reducing the number of utilized signals. In this paper, we propose three methodologies based on electronic health records and heart rate variability (HRV)...
July 2020: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
Lukasz Tyszczuk Smith, Liat Levita, Francesco Amico, Jennifer Fagan, John H Yek, Justin Brophy, Haihong Zhang, Mahnaz Arvaneh
Depression is the leading cause of disability worldwide, yet rates of missed- and mis-diagnoses are alarmingly high. The introduction of objective biomarkers, to aid diagnosis, informed by depression's physiological pathology may alleviate some of the burden on strained mental health services. Three minutes of eyes-closed resting state heart rate and skin conductance response (SCR) data were acquired from 27 participants (16 healthy controls, 11 with major depressive disorder (MDD)). Various classifiers were trained on state-of-the-art and novel features...
July 2020: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
Yongfeng Huang, Chenxi Sun, Tianchen Jin, Shuchen Yang, Zhiming Zhang
Unobtrusively detecting inter-beat interval (IBI) from ballistocardiogram (BCG) is useful for monitoring cardiac activity at home, especially for calculating heart rate variability (HRV), the critical indicator to evaluate heart health. Compared to single-sensor system in most studies, this research used a bed-embedded 9 by 2 array sensors system to improve measurement coverage and precision of IBI estimation. Based on this system, we proposed a mode-switch based algorithm to solve the problem on array sensor signal selection and multichannel data fusion using linear regression model and Kalman filter...
July 2020: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
David C Sheridan, Ryan Dehart, Amber Lin, Michael Sabbaj, Steven D Baker
OBJECTIVE: Heart rate variability (HRV) evaluates small beat-to-beat time interval (BBI) differences produced by the heart and suggested as a marker of the autonomic nervous system. Artifact produced by movement with wrist worn devices can significantly impact the validity of HRV analysis. The objective of this study was to determine the impact of small errors in BBI selection on HRV analysis and produce a foundation for future research in mental health wearable technology. METHODS: This was a sub-analysis from a prospective observational clinical trial registered with clinicaltrials...
September 2020: Psychiatry Investigation
Eden Asmare Kassahun, Amlaku Mulat Aweke, Almaz Aklilu Getu, Getahun Belay Gela, Simachew Kassa Limenih, Mesafint Ewnetu Mekonnen, Tilksew Ayalew Abtie
Introduction: Nonreassuring fetal heart rate patterns (NRFHRP) suggest fetal conciliation or a deteriorating ability to handle the stress of labor. Nearly half of stillbirths occurring worldwide are due to hypoxia which is primarily manifested by NRFHRP. Hence, this study assessed the proportion and associated factors of NRFHRP in the Finote Selam primary hospital, North West Ethiopia. Methods: An institution-based retrospective cross-sectional study was conducted from March 1 to April 1, 2019, on 364 charts of mothers who gave birth from January 2017 to January 2018 at the Finote Selam primary hospital...
2020: BioMed Research International
Megan E Renna, Michael A Hoyt, Cristina Ottaviani, Douglas S Mennin
BACKGROUND: Worry increases risk for long-term health issues by prolonging the physiological stress response. In contrast, relaxation may ameliorate the psychological and physiological burden resulting from worry. This study examined the impact of experimentally induced worry and relaxation on cortisol, heart rate variability (HRV), and inflammation. METHOD: Participants (N = 75) completed both a worry and relaxation induction (presented in a fixed order) while HRV was collected continuously...
September 16, 2020: Psychoneuroendocrinology
Sharon Taub, Moshe Hoshen, Ran Balicer, Shiri Kamhi-Nesher, Abraham Weizman, Amir Krivoy
Clozapine is the only antipsychotic compound indicated for refractory-schizophrenia. However, it is associated with emergent metabolic dysregulation and cardiovascular risk which may lead to mortality. In this study we aimed to explore predictors for mortality in a large cohort of schizophrenia patients treated with long-term clozapine, using the electronic medical records of the largest health care provider in Israel. Among 27,929 patients diagnosed with schizophrenia, 1817 were prescribed clozapine during the years 2012-2014...
September 24, 2020: European Neuropsychopharmacology: the Journal of the European College of Neuropsychopharmacology
Raouf S Gharbo
Adaption to changes of external environment or internal health, the body-mind connection, or autonomic nervous system must be flexible and healthy. Population health studies with wearable technology and remote monitoring will lead to paradigm shifts in how to approach the physiology of emotion. Heart rate variability as a whole health biomarker could emerge as a foundation for a process beginning with objective habits and skills of real-time modulation with focused breathing for healthier decision making and autonomic health trajectory change...
November 2020: Physical Medicine and Rehabilitation Clinics of North America
Salma M Abdalla, Shui Yu, Sandro Galea
Importance: Income disparity between persons with the most resources (the top 20% of earners) and the remainder of the population in the United States has dramatically widened over the past few decades. Given the well-established association between income and health, this increasing income gap may provide insights into the dynamics of cardiovascular disease (CVD) burden among adults in the US. Objective: To quantify the contribution of people in the highest-resources group and the remainder of the population to the burden of CVD, and to estimate the trends in the prevalence of CVD for the 2 groups in the United States from 1999 to 2016...
September 1, 2020: JAMA Network Open
Charles Ethan Paccione, Lien My Diep, Audun Stubhaug, Henrik Børsting Jacobsen
BACKGROUND: Chronic widespread pain (CWP), including fibromyalgia (FM), affects one in every ten adults and is one of the leading causes of sick leave and emotional distress. Due to an unclear etiology and a complex pathophysiology, FM is a condition with few, if any, effective and safe treatments. However, current research within the field of vagal nerve innervation suggests psychophysiological and electrical means by which FM may be treated. This study will investigate the efficacy of two different noninvasive vagal nerve stimulation techniques for the treatment of FM...
September 23, 2020: Trials
Conrad Spellenberg, Peter Heusser, Arndt Büssing, Andreas Savelsbergh, Dirk Cysarz
Psychological stress may have harmful physiological effects and result in deteriorating health. Acute psychological stress acts also on cardiac autonomic regulation and may lead to nonstationarities in the interbeat interval series. We address the requirement of stationary RR interval series to calculate frequency domain parameters of heart rate variability (HRV) and use binary symbolic dynamics derived from RR interval differences to overcome this obstacle. 24 healthy subjects (12 female, 20-35 years) completed the following procedure: waiting period, Trier Social Stress Test to induce acute psychological stress, recovery period...
September 22, 2020: Scientific Reports
Jasmine I Kerr, Mara Naegelin, Raphael P Weibel, Andrea Ferrario, Roberto La Marca, Florian von Wangenheim, Christoph Hoelscher, Victor R Schinazi
BACKGROUND: The high prevalence of office stress and its detrimental health consequences are of concern to individuals, employers and society at large. Laboratory studies investigating office stress have mostly relied on data from participants that were tested individually on abstract tasks. In this study, we examined the effect of psychosocial office stress and work interruptions on the psychobiological stress response in a realistic but controlled group office environment. We also explored the role of cognitive stress appraisal as an underlying mechanism mediating the relationship between work stressors and the stress response...
August 16, 2020: Psychoneuroendocrinology
M M E Riem, L E Kunst, W J Kop
BACKGROUND: This study examined whether intranasal oxytocin enhances the stress-buffering effects of social support during experimentally induced pain, taking into account the role of individual differences in attachment security. METHODS: Female participants (N = 193) were randomly assigned to oxytocin (24 IU intranasal) or placebo and to receive support or no support from a friend (2 × 2 factorial design with repeated measures)). Participants underwent the Cold Pressor Task (CPT) and were monitored for heart rate variability (HRV: RMSSD) and heart rate and reported pain levels...
September 15, 2020: Journal of Affective Disorders
Nathaniel T Berry, Laurie Wideman, Christopher K Rhea
Heart rate variability (HRV) is a noninvasive marker of cardiac autonomic function that has been extensively studied in a variety of populations. However, HRV analyses require stationarity-thus, limiting the conditions in which these data can be analyzed in physiologic and health research (e.g. post-exercise). To provide evidence and clarity on how non-stationarity affects popular indices of variability and complexity. Simulations within physiologic (restricted to values similar to exercise and recovery RR-intervals) and non-physiologic parameters, with homoscedastic and heteroscedastic variances, across four sample lengths (200, 400, 800, and 2000), and four trends (stationary, positive-linear, quadratic, and cubic) were detrended using 1-3 order polynomials and sequential differencing...
October 2020: Nonlinear Dynamics, Psychology, and Life Sciences
Meng-Wei Zhi, Xin-Juan Dai, Zhi-Wei Jiang, Shan-Shan Xu, Min Li, Rui-Yi Xie
OBJECTIVE: To observe the effect of acupoint application therapy at different timing points on the gastrointestinal function recovery and heart rate variability (HRV) after laparoscopic resection of colorectal cancer under the instruction of enhanced recovery after surgery (ERAS). METHODS: A total of 105 patients for the selective laparoscopic resection of colorectal cancer were selected and randomized into a preoperative acupoint application group (35 cases, 3 cases dropped off), a postoperative acupoint application group (35 cases, 1 case dropped out) and a control group (35 cases, 2 cases dropped off)...
September 12, 2020: Zhongguo Zhen Jiu, Chinese Acupuncture & Moxibustion
Michał T Boraczyński, Tomasz W Boraczyński, Zbigniew Wójcik, Jan Gajewski, James J Laskin
BACKGROUND: There is paucity of data examining the effectiveness of long-term Hatha yoga-based (HY) programs focused on the health-related fitness (H-RF) of asymptomatic, sedentary women. The purpose of this study was to examine the effects of a 6-month HY-based training program on H-RF components in sedentary middle-aged women. METHODS: Eighty sedentary women were randomly assigned into either the HY group (HYG) (N.=42) or the control group (CG) (N.=38). The 6-month HYG program involved a progressive series of Vinyasa Flow poses performed 3 times/week for 60 minutes (40 minutes within the exercise zone of 60-75% HR<inf>max</inf>)...
August 2020: Journal of Sports Medicine and Physical Fitness
Sidra Goldman-Mellor, Carlisha Hall, Magdalena Cerdá, Harish Bhat
PURPOSE: Individuals with poor physical and mental health may face elevated risk for suicide, particularly suicide by firearm. METHODS: This retrospective cohort study used statewide, longitudinally-linked ED patient record and mortality data to examine 12-month incidence of firearm suicide among emergency department (ED) patients presenting with a range of physical health problems. Participants included all residents presenting to a California ED in 2009-2013 with nonfatal visits for somatic diagnoses hypothesized to increase suicide risk, including myocardial infarction, congestive heart failure, cerebrovascular disease, chronic obstructive pulmonary disease, diabetes, cancer, back pain, headache, joint disorder, and injuries...
September 17, 2020: Annals of Epidemiology
Tal Kochli-Hailovski, Ibrahim Marai, Abraham Lorber, Miri Cohen
OBJECTIVES: To examine the associations between intensity of providing regular grandchild care and positive affect (PA) and negative affect (NA), heart rate variability (HRV) and somatic symptoms. METHODS: This was a cross-sectional study involving 104 individuals (aged 59-82) who provide at least 5 h a week of regular care for their grandchildren. The study model was assessed using structural equation modeling. RESULTS: Intensity of regular care (mean hours per week: M = 14...
September 16, 2020: Geriatric Nursing
Toby N Weingarten, Hiroshi Morimatsu, Juan Fiorda-Diaz, Sergio D Bergese, Makiko Ariyoshi, Juraj Sprung, Albert Dahan, Frank J Overdyk
BACKGROUND Asymptomatic postoperative atrial fibrillation (AF) may go undetected. As part of a multicenter observational trial designed to develop a risk prediction score for respiratory depression, the respiratory patterns of patients admitted to standard wards were continuously assessed with capnography and pulse oximetry. The monitor measured end-tidal carbon dioxide, respiratory rate, heart rate (HR), and oxyhemoglobin saturation. CASE REPORT Two men ages 75 and 72 experienced abrupt and variable postoperative changes in HR consistent with AF with rapid ventricular response, coinciding with an abnormal breathing pattern with apneic episodes...
September 19, 2020: American Journal of Case Reports
Isao Saito, Koutatsu Maruyama, Tadahiro Kato, Yasunori Takata, Kiyohide Tomooka, Ryoichi Kawamura, Yuichi Uesugi, Yoshihiko Naito, Haruhiko Osawa, Takeshi Tanigawa
BACKGROUND: Autonomic activity is possibly influenced by physical activity (PA). However, it remains unclear whether this association is modified by insulin resistance. METHODS: This population-based study between 2009 and 2012 included 2016 men and women aged 30-79 years. The PA was assessed using a validated questionnaire based on sleep, occupation, transportation, household characteristics, and leisure-time PA. Heart rate (HR) and heart rate variability (HRV) in the sitting position were determined from 5-minute recordings of pulse waves detected by a fingertip sensor...
September 17, 2020: Journal of Physical Activity & Health
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