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Heart rate variability and health

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https://www.readbyqxmd.com/read/29694317/psychophysiological-response-to-social-stressors-relevance-of-sex-and-age
#1
Matias M Pulopulos, Vanesa Hidalgo, Sara Puig-Pérez, Alicia Salvador
BACKGROUND: Understanding the factors involved in the psychophysiological response of people in acute stressful situations is crucial to the prevention and treatment of stress-related health problems. We aim to integrate the results of studies investigating the role of sex and age in the inter-individual variability in several biomarkers of the stress response. METHODS: We summarize the main findings of our research group and other laboratories regarding sex and age-related differences in the psychophysiological response to psychosocial stress...
May 2018: Psicothema
https://www.readbyqxmd.com/read/29688023/passive-nocturnal-physiologic-monitoring-enables-early-detection-of-exacerbations-in-asthmatic-children-a-proof-of-concept-study
#2
Michelle F Huffaker, Michael Carchia, Bronwyn U Harris, William C Kethman, Todd E Murphy, Charlotte C D Sakarovitch, FeiFei Qin, David N Cornfield
RATIONALE: Asthma management depends on prompt identification of symptoms, which challenges both patients and providers. In asthma, a misapprehension of health between exacerbations can compromise compliance. Thus, there is a need for a tool that permits objective longitudinal monitoring without increasing the burden of patient compliance. OBJECTIVES: We sought to determine whether changes in nocturnal physiology are associated with asthma symptoms in pediatric patients...
April 24, 2018: American Journal of Respiratory and Critical Care Medicine
https://www.readbyqxmd.com/read/29687613/free-living-continuous-hypo-hydration-and-cardiovascular-response-to-exercise-in-a-heated-environment
#3
Kate S Early, Conrad P Earnest, Bailey Theall, Nathan P Lemoine, Brian Harrell, Neil M Johannsen
Chronic dehydration (DEH) and heat stress combined with poor cardiovascular (CV) health may influence physiological responses to exercise. We examined the effects of free-living induced hypo-hydration on physiological responses to exercise in a heated environment and whether resting CV health is related to these changes. Participants (N = 16, 20.6 ± 1.2 years) were randomized to 3 days of voluntary fluid restriction (DEH) or intake (hydration [HYD]) followed by an exercise bout. CV health was assessed by flow-mediated dilation (FMD), pulse wave analysis, and heart rate variability (HRV)...
April 2018: Physiological Reports
https://www.readbyqxmd.com/read/29683919/hiit-in-the-real-world-outcomes-from-a-12-month-intervention-in-overweight-adults
#4
Melyssa Roy, Sheila M Williams, Rachel C Brown, Kim A Meredith-Jones, Hamish Osborne, Michelle Jospe, Rachael W Taylor
PURPOSE: Although high-intensity interval training (HIIT) and moderate-intensity continuous exercise have comparable health outcomes in the laboratory setting, effectiveness studies in real-world environments are lacking. The aim of this study was to determine the effectiveness of an unsupervised HIIT programme in overweight/obese adults over 12 months. METHODS: 250 overweight/obese adults could choose HIIT or current exercise guidelines of 30 minutes/day moderate-intensity exercise...
April 21, 2018: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/29681793/autonomic-and-brain-morphological-predictors-of-stress-resilience
#5
REVIEW
Luca Carnevali, Julian Koenig, Andrea Sgoifo, Cristina Ottaviani
Stressful life events are an important cause of psychopathology. Humans exposed to aversive or stressful experiences show considerable inter-individual heterogeneity in their responses. However, the majority does not develop stress-related psychiatric disorders. The dynamic processes encompassing positive and functional adaptation in the face of significant adversity have been broadly defined as resilience . Traditionally, the assessment of resilience has been confined to self-report measures, both within the general community and putative high-risk populations...
2018: Frontiers in Neuroscience
https://www.readbyqxmd.com/read/29681228/driving-in-an-urban-environment-the-stress-response-and-effects-of-exercise
#6
Michael Antoun, Ding Ding, Erika E Bohn-Goldbaum, Scott Michael, Kate M Edwards
Driving may be detrimental to health, with one hypothesis suggesting that driving may elicit an acute stress response and, with repeated exposures, may become a chronic stressor. The present study examined the stress response to driving and the effectiveness of a prior exercise bout in dampening this response. Twenty healthy adults performed three tasks: control, driving and exercise plus driving. Heart rate (HR), heart rate variability (HRV), blood pressure (BP) and cortisol were measured to quantify the acute stress response to each condition...
April 23, 2018: Ergonomics
https://www.readbyqxmd.com/read/29679898/heart-rate-variability-alterations-in-late-life-depression-a-meta-analysis
#7
REVIEW
Lydia Brown, Chandan Karmakar, Richard Gray, Ripu Jindal, Terrence Lim, Christina Bryant
OBJECTIVE: There is strong evidence for a bi-directional relationship between heart-health and depression in later life, but the physiological mechanisms underlying this relationship remain unclear. Heart rate variability is one promising factor that might help explain this relationship. We present results of a meta-analysis that considers heart rate variability alterations in older adults with depression. METHODS: Literature search of Embase, PsychInfo and Medline revealed five clinical studies and six observational studies that examined the relationship between heart rate variability and depression in adults with a mean age over 60...
April 10, 2018: Journal of Affective Disorders
https://www.readbyqxmd.com/read/29670391/determining-30-day-readmission-risk-for-heart-failure-patients-the-readmission-after-heart-failure-scale
#8
Ronald S Chamberlain, Jaswinder Sond, Krishnaraj Mahendraraj, Christine Sm Lau, Brianna L Siracuse
Background: Chronic heart failure (CHF), which affects >5 million Americans, accounts for >1 million hospitalizations annually. As a part of the Hospital Readmission Reduction Program, the Affordable Care Act requires that the Centers for Medicare and Medicaid Services reduce payments to hospitals with excess readmissions. This study sought to develop a scale that reliably predicts readmission rates among patients with CHF. Methods: The State Inpatient Database (2006-2011) was utilized, and discharge data including demographic and clinical characteristics on 642,448 patients with CHF from California and New York (derivation cohort) and 365,359 patients with CHF from Florida and Washington (validation cohort) were extracted...
2018: International Journal of General Medicine
https://www.readbyqxmd.com/read/29668530/cardiorespiratory-effects-of-air-pollution-in-a-panel-study-of-winter-outdoor-physical-activity-in-older-adults
#9
David M Stieb, Robin Shutt, Lisa Marie Kauri, Gail Roth, Mieczyslaw Szyszkowicz, Nina A Dobbin, Li Chen, Marc Rigden, Keith Van Ryswyk, Ryan Kulka, Branka Jovic, Marie Mulholland, Martin S Green, Ling Liu, Guillaume Pelletier, Scott A Weichenthal, Robert E Dales
OBJECTIVE: The aim of this study was to assess cardiorespiratory effects of air pollution in older adults exercising outdoors in winter. METHODS: Adults 55 years of age and older completed daily measurements of blood pressure, peak expiratory flow and oximetry, and weekly measurements of heart rate variability, endothelial function, spirometry, fraction of exhaled nitric oxide and urinary oxidative stress markers, before and after outdoor exercise, for 10 weeks...
April 17, 2018: Journal of Occupational and Environmental Medicine
https://www.readbyqxmd.com/read/29625600/implementing-paediatric-early-warning-scores-systems-in-the-netherlands-future-implications
#10
J F de Groot, N Damen, E de Loos, L van de Steeg, L Koopmans, P Rosias, M Bruijn, J Goorhuis, C Wagner
BACKGROUND: Paediatric Early Warning Scores (PEWS) are increasingly being used for early identification and management of clinical deterioration in paediatric patients. A PEWS system includes scores, cut-off points and appropriate early intervention. In 2011, The Dutch Ministry of Health advised hospitals to implement a PEWS system in order to improve patient safety in paediatric wards. The objective of this study was to examine the results of implementation of PEWS systems and to gain insight into the attitudes of professionals towards using a PEWS system in Dutch non-university hospitals...
April 6, 2018: BMC Pediatrics
https://www.readbyqxmd.com/read/29623050/linear-and-nonlinear-analyses-of-the-cardiac-autonomic-control-in-children-with-developmental-coordination-disorder-a-case-control-study
#11
Jorge L Cavalcante Neto, Antonio R Zamunér, Bianca C Moreno, Ester Silva, Eloisa Tudella
Children with Developmental Coordination Disorder (DCD) and children at risk for DCD (r-DCD) present motor impairments interfering in their school, leisure and daily activities. In addition, these children may have abnormalities in their cardiac autonomic control, which together with their motor impairments, restrict their health and functionality. Therefore, this study aimed to assess the cardiac autonomic control, by linear and nonlinear analysis, at supine and during an orthostatic stimulus in DCD, r-DCD and typically developed children...
2018: Frontiers in Physiology
https://www.readbyqxmd.com/read/29611872/the-dresden-burnout-study-protocol-of-a-prospective-cohort-study-for-the-bio-psychological-investigation-of-burnout
#12
Marlene Penz, Magdalena K Wekenborg, Lars Pieper, Katja Beesdo-Baum, Andreas Walther, Robert Miller, Tobias Stalder, Clemens Kirschbaum
OBJECTIVES: The Dresden Burnout Study (DBS) is a 12-year longitudinal cohort study that aims to provide a description of the burnout syndrome on the basis of time and symptom criteria with a special focus on the search for biomarkers. Biological and psychosocial approaches are applied to examine the long-term course and consequences of burnout within a population-based German-speaking sample aged 18 to 68 years. METHODS: Demographics and psychosocial data are generated by online assessments, including demographics and questionnaires on burnout, burnout-related constructs, work-environment, and health-related factors...
April 3, 2018: International Journal of Methods in Psychiatric Research
https://www.readbyqxmd.com/read/29609921/a-comparison-of-the-cardiovascular-effects-of-simulated-and-spontaneous-laughter
#13
Mikaela M Law, Elizabeth A Broadbent, John J Sollers
OBJECTIVES: Laughter has long been regarded as beneficial for health, but the mechanisms are not clearly understood. The current study aimed to compare the acute cardiovascular effects of spontaneous and simulated laughter. DESIGN: A mixed factorial experiment was performed to examine changes in cardiovascular variables in response to experimental tasks across conditions. INTERVENTIONS: A sample of 72 participants were randomised to one of three 6 min interventions...
April 2018: Complementary Therapies in Medicine
https://www.readbyqxmd.com/read/29609475/effectiveness-of-a-smartphone-based-worry-reduction-training-for-stress-reduction-a-randomized-controlled-trial
#14
Anke Versluis, Bart Verkuil, Philip Spinhoven, Jos F Brosschot
OBJECTIVE: Perseverative cognition (e.g. worry) and unconscious stress are suggested to be important mediators in the relation between stressors and physiological health. We examined whether a smartphone-based worry-reduction training improved a physiological marker of stress (i.e. increased heart rate variability [HRV]) and unconscious stress. DESIGN: Randomised-controlled trial was conducted with individuals reporting work stress (n = 136). Participants were randomised to the experimental, control or waitlist condition (resp...
April 3, 2018: Psychology & Health
https://www.readbyqxmd.com/read/29608761/correlates-and-consequences-central-sleep-apnea-in-a-national-sample-of-u-s-veterans
#15
David Ratz, Wyndy Wiitala, M S Badr, Jennifer Burns, Susmita Chowdhuri
The prevalence and consequences of central sleep apnea (CSA) in adults are not well- described. By utilizing the large Veterans Health Administration (VHA) national administrative databases, we sought to determine the incidence, clinical correlates and impact of CSA on healthcare utilization in Veterans. Analysis of a retrospective cohort of patients with sleep disorders was performed from outpatient visits and inpatient admissions from fiscal years 2006 through 2012. The CSA group, defined by International Classification of Diseases-9, was compared to a non-CSA group...
March 28, 2018: Sleep
https://www.readbyqxmd.com/read/29607505/brain-heart-interaction-in-perseverative-cognition
#16
Cristina Ottaviani
The move from the concept of homeostasis to that of allostasis has led reactivity stress research to widen the object of its investigation: from the brief physiological response that occurs when one is facing a stressor to what happens when one is anticipating or recovering from a stressor. A paradigmatic example is represented by perseverative cognition, during which human beings react "as if" they were constantly facing a concrete stressor. The core idea behind this review is that the cognitive inflexibility that characterizes perseverative cognition is reflected in both our body (by increased autonomic nervous system rigidity assessed by heart rate variability; HRV) and our brain (by reduced prefrontal-amygdala functional connectivity)...
April 1, 2018: Psychophysiology
https://www.readbyqxmd.com/read/29604069/moderate-and-severe-hypoxia-elicit-divergent-effects-on-cardiovascular-function-and-physiological-rhythms
#17
Melissa A Allwood, Brittany A Edgett, Ashley L Eadie, Jason S Huber, Nadya Romanova, Philip J Millar, Keith R Brunt, Jeremy A Simpson
Hypoxia is both a consequence and cause of many acute and chronic diseases. Severe hypoxia causes hypertension with cardiovascular sequelae, however, the rare studies using moderate severities of hypoxia support that it can be beneficial, suggesting hypoxia may not always be detrimental. Comparisons between studies are difficult due to varied classifications of hypoxic severities, methods of delivery and use of anaesthetics. Thus, to investigate the long-term effects of moderate hypoxia on cardiovascular health, radio-telemetry was used to obtain in vivo physiological measurements in unanaesthetized mice during 24-hours of either moderate (FI O2  = 0...
March 31, 2018: Journal of Physiology
https://www.readbyqxmd.com/read/29601401/should-emergency-department-attendances-be-used-with-or-instead-of-readmission-rates-as-a-performance-metric-comparison-of-statistical-properties-using-national-data
#18
Kate Honeyford, Paul Aylin, Alex Bottle
BACKGROUND: Hospital readmissions are common and are viewed as unfavorable. They are commonly used as a measure of quality of care and, in the United States and England, are associated with financial penalties. Readmissions are not the only possible return-to-acute-care metric; patients may also attend emergency departments (ED). OBJECTIVE: To assess hospital-level return-to-acute-care metrics using statistical criteria. RESEARCH DESIGN: Patient readmissions and/or ED attendances were aggregated to produce risk-standardized hospital rates...
March 29, 2018: Medical Care
https://www.readbyqxmd.com/read/29600951/linear-and-nonlinear-dynamics-of-heart-rate-variability-are-correlated-with-purpose-in-life-and-degree-of-optimism-in-anxiety-disorder-patients
#19
Jihoon Oh, Jeong-Ho Chae
Although heart rate variability (HRV) may be a crucial marker of mental health, how it is related to positive psychological factors (i.e. attitude to life and positive thinking) is largely unknown. Here we investigated the correlation of HRV linear and nonlinear dynamics with psychological scales that measured degree of optimism and happiness in patients with anxiety disorders. Results showed that low- to high-frequency HRV ratio (LF/HF) was increased and the HRV HF parameter was decreased in subjects who were more optimistic and who felt happier in daily living...
April 2018: Nonlinear Dynamics, Psychology, and Life Sciences
https://www.readbyqxmd.com/read/29599993/a-mixed-methods-study-of-tai-chi-exercise-for-patients-with-chronic-heart-failure-aged-70-years-and-older
#20
Lena Hägglund, Kurt Boman, Margareta Brännström
Aims and objectives: This study aimed to evaluate Tai Chi group training among patients with chronic heart failure (CHF) aged 70 years and older. Background: Physical activity is recommended for CHF treatment. Tai Chi is found to be beneficial to different patient groups, although few studies focus on older patients with CHF. Design: A mixed methods study. Participants were randomly assigned to Tai Chi training twice a week for 16 weeks ( N  =   25) or control ( N  =   20)...
April 2018: Nursing Open
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