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Heart rate variability and health

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https://www.readbyqxmd.com/read/28322987/an-experimental-examination-of-the-effort-reward-imbalance-model-of-occupational-stress-increased-financial-reward-is-related-to-reduced-stress-physiology
#1
Kathleen Landolt, Emma O'Donnell, Agnes Hazi, Nico Dragano, Bradley J Wright
Effort-reward imbalance in the workplace is linked to a variety of negative health and organisational outcomes, but it has rarely been assessed experimentally. We manipulated reward (while keeping effort constant) in a within-subjects design with female participants (N= 60) who were randomly assigned to high and standard reward conditions within a simulated office environment. Self-report, behavioural (task performance), and physiological (heart rate variability, salivary alpha amylase) measures assessed the impact of increased financial reward...
March 16, 2017: Biological Psychology
https://www.readbyqxmd.com/read/28314465/data-capture-and-communication-during-transfers-to-definitive-care-in-an-inclusive-trauma-system
#2
Nori L Bradley, Naisan Garraway, Nathaniel Bell, Nasira Lakha, S Morad Hameed
INTRODUCTION: Background trauma survivors in rural areas transferred to urban centers have higher mortality than trauma patients admitted directly to urban centers. Transfer data in trauma registries is important for injury control. Prehospital and early physiologic data may reflect processes of pre-hospital care. British Columbia currently has no standardized process for trauma patient data transfer. PATIENTS AND METHODS: We performed a retrospective data analysis for major trauma patients (ISS>15) transferred to a Level I trauma center over a 1year period (n=243)...
November 5, 2016: Injury
https://www.readbyqxmd.com/read/28303846/heart-rate-variability-in-patients-with-acute-ischemic-stroke-at-different-stages-of-renal-dysfunction-a-cross-sectional-observational-study
#3
Lin Wei, Wen-Bo Zhao, Huan-Wen Ye, Yan-Hua Chen, Xiao-Pei Zhang, Yan Huang, Ye-Feng Cai, Quan-Fu Chen, Su-Yue Pan
BACKGROUND: Renal function is associated with mortality and functional disabilities in stroke patients, and impaired autonomic function is common in stroke, but little is known regarding its effects on stroke patients with renal dysfunction. This study sought to evaluate the association between autonomic function and stroke in patients with renal dysfunction. METHODS: This study comprised 232 patients with acute ischemic stroke consecutively enrolled from February 2013 to November 2014 at Guangdong Provincial Hospital of Chinese Medicine in China...
March 20, 2017: Chinese Medical Journal
https://www.readbyqxmd.com/read/28290548/atrial-structure-function-and-arrhythmogenesis-in-aged-and-frail-mice
#4
Hailey J Jansen, Motahareh Moghtadaei, Martin Mackasey, Sara A Rafferty, Oleg Bogachev, John L Sapp, Susan E Howlett, Robert A Rose
Atrial fibrillation (AF) is prevalent in aging populations; however not all individuals age at the same rate. Instead, individuals of the same chronological age can vary in health status from fit to frail. Our objective was to determine the impacts of age and frailty on atrial function and arrhythmogenesis in mice using a frailty index (FI). Aged mice were more frail and demonstrated longer lasting AF compared to young mice. Consistent with this, aged mice showed longer P wave duration and PR intervals; however, both parameters showed substantial variability suggesting differences in health status among mice of similar chronological age...
March 14, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28290065/does-stress-result-in-you-exercising-less-or-does-exercising-result-in-you-being-less-stressed-or-is-it-both-testing-the-bi-directional-stress-exercise-association-at-the-group-and-person-n-of-1-level
#5
Matthew M Burg, Joseph E Schwartz, Ian M Kronish, Keith M Diaz, Carmela Alcantara, Joan Duer-Hefele, Karina W Davidson
BACKGROUND: Psychosocial stress contributes to heart disease in part by adversely affecting maintenance of health behaviors, while exercise can reduce stress. Assessing the bi-directional relationship between stress and exercise has been limited by lack of real-time data and theoretical and statistical models. This lack may hinder efforts to promote exercise maintenance. PURPOSE: We test the bi-directional relationship between stress and exercise using real-time data for the average person and the variability-individual differences-in this relationship...
March 13, 2017: Annals of Behavioral Medicine: a Publication of the Society of Behavioral Medicine
https://www.readbyqxmd.com/read/28275316/cohort-description-the-danish-study-of-functional-disorders
#6
Thomas Meinertz Dantoft, Jeanette Frost Ebstrup, Allan Linneberg, Sine Skovbjerg, Anja Lykke Madsen, Jesper Mehlsen, Louise Brinth, Lene Falgaard Eplov, Tina Wisbech Carstensen, Andreas Schroder, Per Klausen Fink, Erik Lykke Mortensen, Torben Hansen, Oluf Pedersen, Torben Jørgensen
The Danish study of Functional Disorders (DanFunD) cohort was initiated to outline the epidemiology of functional somatic syndromes (FSS) and is the first larger coordinated epidemiological study focusing exclusively on FSS. FSS are prevalent in all medical settings and can be defined as syndromes that, after appropriate medical assessment, cannot be explained in terms of a conventional medical or surgical disease. FSS are frequent and the clinical importance varies from vague symptoms to extreme disability...
2017: Clinical Epidemiology
https://www.readbyqxmd.com/read/28270884/critical-imperative-for-the-reform-of-british-interpretation-of-fetal-heart-rate-decelerations-analysis-of-figo-and-nice-guidelines-post-truth-foundations-cognitive-fallacies-myths-and-occam-s-razor
#7
REVIEW
Shashikant L Sholapurkar
Cardiotocography (CTG) has disappointingly failed to show good predictability for fetal acidemia or neonatal outcomes in several large studies. A complete rethink of CTG interpretation will not be out of place. Fetal heart rate (FHR) decelerations are the most common deviations, benign as well as manifestation of impending fetal hypoxemia/acidemia, much more commonly than FHR baseline or variability. Their specific nomenclature is important (center-stage) because it provides the basic concepts and framework on which the complex "pattern recognition" of CTG interpretation by clinicians depends...
April 2017: Journal of Clinical Medicine Research
https://www.readbyqxmd.com/read/28268930/can-ppg-be-used-for-hrv-analysis
#8
N Pinheiro, R Couceiro, J Henriques, J Muehlsteff, I Quintal, L Goncalves, P Carvalho
Heart rate variability (HRV) represents one of the most promising markers of the autonomic nervous system (ANS) regulation. However, it requires the acquisition of the ECG signal in order to reliably detect the RR intervals, which is not always easily and comfortably available in personal health applications. Additionally, due to progress in single spot optical sensors, photoplethysmography (PPG) is an interesting alternative for heartbeat interval measurements, since it is a more convenient and a less intrusive measurement technique...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28268874/short-term-assessment-of-autonomic-nervous-system-as-a-potential-tool-to-quantify-pain-experience
#9
Arto J Hautala, Jaro Karppinen, Tapio Seppanen
Various pain conditions may result in altered autonomic nervous system regulation. We evaluated whether autonomic regulation, analyzed with short-term heart rate variability (HRV), differs between low back pain (LBP) patients and healthy controls. Additionally, we tested if short-term HRV recordings are feasible and informative in planning home monitoring of LBP patients. The study population consisted of 16 volunteers (8 LBP patients and 8 healthy subjects) (age 42±10 years, body mass index 26±4 kg/m2, 7 men and 9 women)...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28268805/missing-rri-interpolation-for-hrv-analysis-using-locally-weighted-partial-least-squares-regression
#10
Keisuke Kamata, Koichi Fujiwara, Toshiki Yamakawa, Manabu Kano
The R-R interval (RRI) fluctuation in electrocardiogram (ECG) is called heart rate variability (HRV). Since HRV reflects autonomic nervous function, HRV-based health monitoring services, such as stress estimation, drowsy driving detection, and epileptic seizure prediction, have been proposed. In these HRV-based health monitoring services, precise R wave detection from ECG is required; however, R waves cannot always be detected due to ECG artifacts. Missing RRI data should be interpolated appropriately for HRV analysis...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28268797/noninvasive-health-condition-monitoring-device-for-workers-at-high-altitudes-conditions
#11
Pablo Aqueveque, Cristopher Gutierrez, Francisco Saavedra, Esteban J Pino
This work presents the design and implementation of a continuous monitoring device to control the health state of workers, for instance miners, at high altitudes. The extreme ambient conditions are harmful for peoples' health; therefore a continuous control of the workers' vital signs is necessary. The developed system includes physiological variables: electrocardiogram (ECG), respiratory activity and body temperature (BT), and ambient variables: ambient temperature (AT) and relative humidity (RH). The noninvasive sensors are incorporated in a t-shirt to deliver a functional device, and maximum comfort to the users...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28268310/towards-24-7-continuous-heart-rate-monitoring
#12
Adrian Tarniceriu, Jakub Parak, Philippe Renevey, Marko Nurmi, Mattia Bertschi, Ricard Delgado-Gonzalo, Ilkka Korhonen
Heart rate (HR) and HR variability (HRV) carry rich information about physical activity, mental and physical load, physiological status, and health of an individual. When combined with activity monitoring and personalized physiological modelling, HR/HRV monitoring may be used for monitoring of complex behaviors and impact of behaviors and external factors on the current physiological status of an individual. Optical HR monitoring (OHR) from wrist provides a comfortable and unobtrusive method for HR/HRV monitoring and is better adhered by users than traditional ECG electrodes or chest straps...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28265249/heart-rate-variability-and-cardiac-vagal-tone-in-psychophysiological-research-recommendations-for-experiment-planning-data-analysis-and-data-reporting
#13
REVIEW
Sylvain Laborde, Emma Mosley, Julian F Thayer
Psychophysiological research integrating heart rate variability (HRV) has increased during the last two decades, particularly given the fact that HRV is able to index cardiac vagal tone. Cardiac vagal tone, which represents the contribution of the parasympathetic nervous system to cardiac regulation, is acknowledged to be linked with many phenomena relevant for psychophysiological research, including self-regulation at the cognitive, emotional, social, and health levels. The ease of HRV collection and measurement coupled with the fact it is relatively affordable, non-invasive and pain free makes it widely accessible to many researchers...
2017: Frontiers in Psychology
https://www.readbyqxmd.com/read/28259410/the-use-of-infrared-thermography-and-accelerometers-for-remote-monitoring-of-dairy-cow-health-and-welfare
#14
M Stewart, M T Wilson, A L Schaefer, F Huddart, M A Sutherland
Increasing reliance on automated systems on-farm has led to a need for remote monitoring of health and welfare. We aimed to validate 2 methods that could be integrated into automated systems currently in use: infrared thermography (IRT) to measure respiration rate (RR), and accelerometers to measure the flinch, step, kick (FSK) response and assessing stress and discomfort. We monitored 22 multiparous, nonlactating, Friesian and Friesian × Jersey cows (average 5.1 yr of age) during a baseline period (2 min), a restraint in a crush (2 min), and then a recovery period after exposure to a startle (2 min)...
March 2, 2017: Journal of Dairy Science
https://www.readbyqxmd.com/read/28248974/the-effect-of-randomised-exposure-to-different-types-of-natural-outdoor-environments-compared-to-exposure-to-an-urban-environment-on-people-with-indications-of-psychological-distress-in-catalonia
#15
Margarita Triguero-Mas, Christopher J Gidlow, David Martínez, Jeroen de Bont, Glòria Carrasco-Turigas, Tania Martínez-Íñiguez, Gemma Hurst, Daniel Masterson, David Donaire-Gonzalez, Edmund Seto, Marc V Jones, Mark J Nieuwenhuijsen
INTRODUCTION: Experimental studies have reported associations between short-term exposure to natural outdoor environments (NOE) and health benefits. However, they lack insight into mechanisms, often have low external and ecological validity, and have rarely focused on people with some psycho-physiological affection. The aim of this study was to use a randomized, case-crossover design to investigate: (i) the effects of unconstrained exposure to real natural and urban environments on psycho-physiological indicators of people with indications of psychological distress, (ii) the possible differential effects of 30 and 30+180 minutes exposures, and (iii) the possible mechanisms explaining these effects...
2017: PloS One
https://www.readbyqxmd.com/read/28248198/rem-sleep-estimation-based-on-autonomic-dynamics-using-r-r-intervals
#16
Heenam Yoon, Su Hwan Hwang, Jae-Won Choi, Yu Jin Lee, Do-Un Jeong, Kwang Suk Park
OBJECTIVE: We developed an automatic algorithm to determine rapid eye movement (REM) sleep on the basis of the autonomic activities reflected in heart rate variations. APPROACH: The heart rate variability (HRV) parameters were calculated using the R-R intervals from an electrocardiogram (ECG). A major autonomic variation associated with the sleep cycle was extracted from a combination of the obtained parameters. REM sleep was determined with an adaptive threshold applied to the acquired feature...
March 1, 2017: Physiological Measurement
https://www.readbyqxmd.com/read/28238507/is-cardiac-autonomic-function-associated-with-cardiorespiratory-fitness-and-physical-activity-in-children-and-adolescents-a-systematic-review-of-cross-sectional-studies
#17
Ricardo Santos Oliveira, Alan Robert Barker, Kelly Michelle Wilkinson, Rebecca Anne Abbott, Craig Anthony Williams
BACKGROUND: Heart rate variability (HRV) is considered to explain improvements in cardiovascular health accrued by physical activity (PA) and cardiorespiratory fitness (CRF) over and above traditional cardiovascular risk factors. OBJECTIVE: To systematically address associations between HRV, PA and CRF in children and adolescents. DATA SOURCES: Medline, EMBASE, SportDISCUS and CINAHL Plus were searched on 5th September 2015 and updated on 4th August 2016...
February 10, 2017: International Journal of Cardiology
https://www.readbyqxmd.com/read/28228307/comparative-study-of-cardiac-autonomic-status-by-heart-rate-variability-between-under-treatment-normotensive-and-hypertensive-known-type-2-diabetics
#18
Jayesh D Solanki, Sanket D Basida, Hemant B Mehta, Sunil J Panjwani, Bhakti P Gadhavi
BACKGROUND: Co-existence of hypertension is known in three quarter of Indian type 2 diabetics, this duo having adverse additive effect on cardiovascular health including dysautonomia. Latter can be measured by simple 5min heart rate variability (HRV) using simple electrocardiogram, which if reduced indicates cardiac risk. OBJECTIVE: We compared HRV parameters between hypertensive and normotensive type 2 diabetics, looking for significant difference if any. MATERIALS AND METHODS: 98 hypertensive and 40 normotensive type 2 diabetics treated as outpatients were evaluated for disease control and risk stratification...
January 2017: Indian Heart Journal
https://www.readbyqxmd.com/read/28227136/can-ppg-be-used-for-hrv-analysis
#19
N Pinheiro, R Couceiro, J Henriques, J Muehlsteff, I Quintal, L Goncalves, P Carvalho, N Pinheiro, R Couceiro, J Henriques, J Muehlsteff, I Quintal, L Goncalves, P Carvalho, P Carvalho, J Muehlsteff, L Goncalves, N Pinheiro, J Henriques, I Quintal, R Couceiro
Heart rate variability (HRV) represents one of the most promising markers of the autonomic nervous system (ANS) regulation. However, it requires the acquisition of the ECG signal in order to reliably detect the RR intervals, which is not always easily and comfortably available in personal health applications. Additionally, due to progress in single spot optical sensors, photoplethysmography (PPG) is an interesting alternative for heartbeat interval measurements, since it is a more convenient and a less intrusive measurement technique...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28227072/short-term-assessment-of-autonomic-nervous-system-as-a-potential-tool-to-quantify-pain-experience
#20
Arto J Hautala, Jaro Karppinen, Tapio Seppanen, Arto J Hautala, Jaro Karppinen, Tapio Seppanen, Jaro Karppinen, Arto J Hautala, Tapio Seppanen
Various pain conditions may result in altered autonomic nervous system regulation. We evaluated whether autonomic regulation, analyzed with short-term heart rate variability (HRV), differs between low back pain (LBP) patients and healthy controls. Additionally, we tested if short-term HRV recordings are feasible and informative in planning home monitoring of LBP patients. The study population consisted of 16 volunteers (8 LBP patients and 8 healthy subjects) (age 42±10 years, body mass index 26±4 kg/m(2), 7 men and 9 women)...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
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