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"Heart rate variability"

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https://www.readbyqxmd.com/read/28641215/worry-and-cognitive-control-predict-course-trajectories-of-anxiety-in-older-adults-with-late-life-depression
#1
P Spinhoven, D C van der Veen, R C Oude Voshaar, H C Comijs
BACKGROUND: Many older adults with depressive disorder manifest anxious distress. This longitudinal study examines the predictive value of worry as a maladaptive cognitive emotion regulation strategy, and resources necessary for successful emotion regulation (i.e., cognitive control and resting heart rate variability [HRV]) for the course of anxiety symptoms in depressed older adults. Moreover, it examines whether these emotion regulation variables moderate the impact of negative life events on severity of anxiety symptoms...
May 19, 2017: European Psychiatry: the Journal of the Association of European Psychiatrists
https://www.readbyqxmd.com/read/28640758/consecutive-ultra-short-term-heart-rate-variability-to-track-dynamic-changes-in-autonomic-nervous-system-during-and-after-exercise
#2
Xiang Chen, Ruijie Yao, Gezhen Yin, Jin Li
OBJECTIVE: Quantitative measurement of the dynamic changes in autonomic nervous system (ANS) during and after exercise has great significance in clinical, sports training and other fields. A consecutive ultra-short-term (30 s, UST) heart rate variability (HRV) method was proposed to track the exercise-induced autonomic control of heart rate (HR). APPROACH: Twenty-three healthy young men participated in the study. The first four stages of the Modified Bruce Protocol (S0-S3) were performed...
June 22, 2017: Physiological Measurement
https://www.readbyqxmd.com/read/28637038/synergic-impact-of-vascular-calcification-and-low-autonomic-tone-in-mortality-of-hemodialysis-patients
#3
Hwee-Yeong Ng, Shu-Kai Hsueh, Yueh-Ting Lee, Terry Ting-Yu Chiou, Pei-Chen Huang, Chien-Te Lee
BACKGROUND: Both cardiovascular calcification and autonomic dysfunction are frequently encountered in hemodialysis patients. We aimed to investigate the relationship between cardiovascular calcification and heart rate variability (HRV) and their influence on long-term outcome. METHODS: Seventy-eight hemodialysis patients underwent echocardiogram and radiography of the pelvis and hands to identify valvular and vascular calcification. HRV was evaluated using a commercial machine...
June 22, 2017: Nephron
https://www.readbyqxmd.com/read/28636519/how-we-eat-may-be-as-important-as-what-we-eat-eating-behaviour-and-heart-rate-variability
#4
Mehmet Emre Ozpelit, Ebru Ozpelit
Objective Diet exerts a crucial role on cardiovascular health. Evidence is mainly based on the content and the amount of dietary intakes. Some recent reports demonstrated that eating behaviour may also be of significant importance in cardiovascular health. In this study we aimed to investigate the effects of eating behaviour on heart rate variability (HRV) in healthy subjects. Methods and results In total, 521 healthy subjects with 24-hour Holter ECG recordings filled out a special questionnaire about their eating behaviour and lifestyles...
March 30, 2017: Acta Cardiologica
https://www.readbyqxmd.com/read/28636505/the-effect-of-aerobic-interval-training-and-continuous-training-on-exercise-capacity-and-its-determinants
#5
Nele Pattyn, Paul J Beckers, Véronique A Cornelissen, Ellen Coeckelberghs, Catherine De Maeyer, Geert Frederix, Kaatje Goetschalckx, Nadine Possemiers, Dirk Schepers, Emeline M Van Craenenbroeck, Kurt Wuyts, Viviane M Conraads, Luc Vanhees
Objective We aimed to investigate (1) the effects of aerobic interval training (AIT) and aerobic continuous training (ACT) on (sub)maximal exercise measures and its determinants including endothelial function, muscle strength and cardiac autonomic function, and (2) the relationship between exercise capacity and these determinants. Methods Two-hundred coronary artery disease (CAD) patients (58.4 ± 9.1 years) were randomized to AIT or ACT for 12 weeks. All patients performed a cardiopulmonary exercise test and endothelial function measurements before and after the intervention; a subpopulation underwent muscle strength and heart rate variability (HRV) assessments...
March 21, 2017: Acta Cardiologica
https://www.readbyqxmd.com/read/28634863/high-tech-acupuncture-for-prevention-of-lifestyle-diseases-a-sino-austrian-cooperation-research-protocol-on-heart-rate-variability
#6
Feng-Xia Liang, Ze-Bin Chen, Song Wu, Jian-Min Liu, Jing-Zhi Wang, Ji-Dong Lu, Lu-Shan Wang, Li Chen, Qing Shu, Daniela Litscher, Lu Wang, Hua Wang, Gerhard Litscher
BACKGROUND: Acupuncture can not only be used for well-known diseases, but also for so-called modern lifestyle-related diseases. Using innovative methods like e.g. new analyses of heart rate variability (HRV), it is also possible to investigate diseases like burnout syndrome, ie., qi defificiency in Chinese medicine (CM). OBJECTIVE: The main object of this research protocol is to perform research on the relationship of burnout syndrome and heart rate (HR) and HRV...
June 20, 2017: Chinese Journal of Integrative Medicine
https://www.readbyqxmd.com/read/28630583/acute-modification-of-cardiac-autonomic-function-of-high-intensity-interval-training-in-collegiate-male-soccer-players-with-different-chronotype-a-cross-over-study
#7
Matteo Bonato, Luca Agnello, Letizia Galasso, Angela Montaruli, Eliana Roveda, Giampiero Merati, Antonio La Torre, Jacopo A Vitale
The purpose of this study was to evaluate if the time of the day (8.00 a.m. vs 8.00 p.m.) and chronotype could influence autonomic cardiac control in soccer players in relation to an acute session of high-intensity interval training. The morningness-eveningness questionnaire was administered to recruit Morning-type and Evening-type collegiate male soccer players. Therefore, 24 players (12 Morning-types and 12 Evening-types) were randomly assigned, to either morning (n = 12; age 23 ± 3 years; height 1.75 ± 0...
June 2017: Journal of Sports Science & Medicine
https://www.readbyqxmd.com/read/28630575/acute-and-post-exercise-physiological-responses-to-high-intensity-interval-training-in-endurance-and-sprint-athletes
#8
Lukas Cipryan, Gerhard Tschakert, Peter Hofmann
The purpose of the presented study was to compare acute and post-exercise differences in cardiorespiratory, metabolic, cardiac autonomic, inflammatory and muscle damage responses to high-intensity interval exercise (HIIT) between endurance and sprint athletes. The study group consisted of sixteen highly-trained males (age 22.1 ± 2.5 years) participating in endurance (n = 8) or sprint (n = 8) sporting events. All the participants underwent three exercise sessions: short HIIT (work interval duration 30s), long HIIT (3min) and constant load exercise (CE)...
June 2017: Journal of Sports Science & Medicine
https://www.readbyqxmd.com/read/28628383/cardiovascular-response-of-an-acute-exergame-session-in-prepubertal-obese-children
#9
Herikson Araújo Costa, Antonio Carlos Silva-Filho, Carlos José Dias, Vicenilma Andrade Martins, Thiago Mendes, André Rabelo, Francisco Navarro, Emerson Silami-Garcia, Cristiano Mostarda, Mario Sevílio
PURPOSE: We aimed to analyze the acute autonomic response of obese and eutrophic prepubertal boys to an exergame (EXG) session. MATERIALS AND METHOD: Nine eutrophic (8.89 ± 2.71 years of age and 16.42% ± 6.30% body fat) and nine obese boys (8.70 ± 1.16 years of age and 40.76% ± 4.2% body fat) participated. Nutritional state was determined using World Health Organization guidelines. Variables were collected at rest, immediately post (IP), and 60 minutes after a 20 minutes EXG session...
June 2017: Games for Health
https://www.readbyqxmd.com/read/28628045/cardio-respiratory-effects-of-air-pollution-in-a-panel-study-of-outdoor-physical-activity-and-health-in-rural-older-adults
#10
David M Stieb, Robin Shutt, Lisa Kauri, Sarah Mason, Li Chen, Mieczyslaw Szyszkowicz, Nina A Dobbin, Marc Rigden, Branka Jovic, Marie Mulholland, Martin S Green, Ling Liu, Guillaume Pelletier, Scott A Weichenthal, Robert E Dales, Isaac Luginaah
OBJECTIVE: To examine cardio-respiratory effects of air pollution in rural older adults exercising outdoors. METHODS: Adults 55 and over completed measurements of blood pressure, peak expiratory flow and oximetry daily, and of heart rate variability, endothelial function, spirometry, fraction of exhaled nitric oxide and urinary oxidative stress markers weekly, before and after outdoor exercise, for 10 weeks. Data were analyzed using linear mixed effect models. RESULTS: Pooled estimates combining 2013 (n = 36 participants) and 2014 (n = 41) indicated that an interquartile increase in the air quality health index (AQHI) was associated with a significant (P < 0...
April 2017: Journal of Occupational and Environmental Medicine
https://www.readbyqxmd.com/read/28627034/brief-mindfulness-meditation-group-training-in-aphasia-exploring-attention-language-and-psychophysiological-outcomes
#11
Rebecca Shisler Marshall, Jacqueline Laures-Gore, Kim Love
BACKGROUND: Stroke is currently the leading cause of long-term disability in adults in the United States. There is a need for accessible, low-cost treatments of stroke-related disabilities such as aphasia. AIMS: To explore an intervention for aphasia utilizing mindfulness meditation (MM). This preliminary study examines the feasibility of teaching MM to individuals with aphasia. Since physiological measures have not been collected for those with aphasia, the study was also an exploration of the potential attention, language and physiological changes after MM in adults with aphasia during a brief, daily group training...
June 19, 2017: International Journal of Language & Communication Disorders
https://www.readbyqxmd.com/read/28625674/regional-cerebral-cortical-thickness-correlates-with-autonomic-outflow
#12
REVIEW
Katelyn N Wood, Mark B Badrov, Mark R Speechley, J Kevin Shoemaker
Dysregulation of autonomic control often develops with advancing age, favoring a chronic state of heightened sympathetic outflow with parasympathetic withdrawal. However, the mechanisms of this age-related autonomic impairment are not known. This study tested the hypothesis that inter-individual differences in autonomic outflow across the adult age-span are related to cerebral cortex thickness. A total of 55 healthy, active individuals participated in this study (21-73years; 18 female). Physical fitness was treated as a possible covariate (VO2peak: 26-81mL/kg/min)...
June 7, 2017: Autonomic Neuroscience: Basic & Clinical
https://www.readbyqxmd.com/read/28625397/quantitative-evaluation-of-heartbeat-interval-time-series-using-poincar%C3%A3-analysis-reveals-distinct-patterns-of-heart-rate-dynamics-during-cycles-of-vagus-nerve-stimulation-in-patients-with-heart-failure
#13
Imad Libbus, Bruce D Nearing, Badri Amurthur, Bruce H KenKnight, Richard L Verrier
BACKGROUND: Optimization of stimulation parameters is essential to maximizing therapeutic efficacy and minimizing side effects. METHODS: The ANTHEM-HF study enrolled patients with heart failure who received chronic autonomic regulation therapy (ART) with an implantable vagus nerve stimulation (VNS) system on either the right (n=30) or left side (n=29). Acute effects of continuously cycling VNS on R-R interval dynamics were evaluated using post hoc Poincaré analysis of ECG recordings collected during multiple titration sessions over an 8-12week period...
June 8, 2017: Journal of Electrocardiology
https://www.readbyqxmd.com/read/28625035/programming-of-infant-neurodevelopment-by-maternal-obesity-potential-role-of-maternal-inflammation-and-insulin-resistance
#14
Mira Dewi, Susan E Carlson, Kathleen M Gustafson, Debra K Sullivan, Jo A Wick, Holly R Hull
BACKGROUND AND OBJECTIVES: Recent studies show that maternal obesity is associated with impaired offspring neurodevelopmental outcomes. The mechanism underlying the association is unclear. However, there is evidence to suggest a role for intra-uterine exposure to inflammation and insulin resistance (IR). We aimed to determine if maternal IR and inflammation were associated to fetal neurodevelopment as indicated by fetal heart rate variability (HRV), an index of fetal cardiac autonomic nervous system development...
June 2017: Asia Pacific Journal of Clinical Nutrition
https://www.readbyqxmd.com/read/28623891/systolic-blood-pressure-variability-in-patients-with-early-severe-sepsis-or-septic-shock-a-prospective-cohort-study
#15
Yi Tang, Jeff Sorenson, Michael Lanspa, Colin K Grissom, V J Mathews, Samuel M Brown
BACKGROUND: Severe sepsis and septic shock are often lethal syndromes, in which the autonomic nervous system may fail to maintain adequate blood pressure. Heart rate variability has been associated with outcomes in sepsis. Whether systolic blood pressure (SBP) variability is associated with clinical outcomes in septic patients is unknown. The propose of this study is to determine whether variability in SBP correlates with vasopressor independence and mortality among septic patients. METHODS: We prospectively studied patients with severe sepsis or septic shock, admitted to an intensive care unit (ICU) with an arterial catheter...
June 17, 2017: BMC Anesthesiology
https://www.readbyqxmd.com/read/28620054/an-assessment-of-the-autonomic-nervous-system-in-the-electrohypersensitive-population-a-heart-rate-variability-and-skin-conductance-study
#16
Soafara Andrianome, Jonathan Gobert, Laurent Hugueville, Erwan Stéphan-Blanchard, Frederic Telliez, Brahim Selmaoui
The aim of the study was twofold: first, to compare the activity of the autonomic nervous system (ANS) between the population self-declared as electrohypersensitive (EHS) and their matched control individuals without intended exposure to electromagnetic fields (EMF). The second objective was to determine whether acute exposure to different radiofrequency signals modifies ANS activity in EHS. For that purpose, two different experiments were undertaken, in which ANS activity was assessed through heart rate variability (HRV) and skin conductance (SC)...
June 15, 2017: Journal of Applied Physiology
https://www.readbyqxmd.com/read/28618917/reduced-cardiovascular-activation-following-chronic-stress-in-caregivers-of-people-with-anorexia-nervosa
#17
Ángel Romero-Martínez, Luis Moya-Albiol
Caring for offspring diagnosed with eating disorders (EDs) puts caregivers under high levels of chronic stress, which have negative consequences for their health. Unfortunately, caregivers have received little attention from mental health professionals. Chronic stress experienced by informal caregivers has been associated with the alteration of body homeostasis, and therefore, the functioning of various physiological systems. This could be the basis of health problems in informal caregivers of people with EDs...
June 15, 2017: Stress: the International Journal on the Biology of Stress
https://www.readbyqxmd.com/read/28617680/pulse-photoplethysmographic-amplitude-and-heart-rate-variability-during-laparoscopic-cholecystectomy-a-prospective-observational-study
#18
Riccardo Colombo, Ferdinando Raimondi, Alberto Corona, Andrea Marchi, Beatrice Borghi, Simone Pellegrin, Paola Bergomi, Tommaso Fossali, Stefano Guzzetti, Alberto Porta
BACKGROUND: Surgical stress affects the autonomic nervous system by increasing sympathetic outflow. One method of monitoring sympathetic activity is pulse photoplethysmographic analysis. From this two indices can be derived - autonomic nervous system state (ANSS) and ANSS index (ANSSi). It has recently been claimed that these indices can be used to measure sympathetic activity in anaesthetised patients, but their validity has not yet been demonstrated. OBJECTIVE: To measure changes in pulse photoplethysmographic indices and determine any agreement with autonomic nervous system modulation of the cardiovascular system in healthy study participants during surgery under general anaesthesia...
June 15, 2017: European Journal of Anaesthesiology
https://www.readbyqxmd.com/read/28616394/new-method-of-sudomotor-function-measurement-to-detect-microvascular-disease-and-sweat-gland-nerve-or-unmyelinated-c-fiber-dysfunction-in-adults-with-retinopathy
#19
John E Lewis, Steven E Atlas, Ammar Rasul, Ashar Farooqi, Laura Lantigua, Oscar L Higuera, Andrea Fiallo, Lianette Laria, Renata Picciani, Ken Wals, Zohar Yehoshua, Armando Mendez, Janet Konefal, Sharon Goldberg, Judi Woolger
BACKGROUND: Diabetes-associated microvascular complications such as retinopathy and neuropathy often lead to end-organ and tissue damage. Impaired skin microcirculation often precedes the detection of other advanced diabetic complications. The ANS-1 system contains a redesigned sympathetic skin response (ANS-1 SSR) device that measures sudomotor function, a photoplethysmography sensor, and a blood pressure device to comprehensively assess cardiac autonomic neuropathy and endothelial dysfunction...
2017: Journal of Diabetes and Metabolic Disorders
https://www.readbyqxmd.com/read/28615160/nkx2-5-is-essential-to-establish-normal-heart-rate-variability-in-the-zebrafish-embryo
#20
Jamie K Harrington, Robert Sorabella, Abigail Tercek, Joseph R Isler, Kimara L Targoff
Heart rate variability (HRV) has become an important clinical marker of cardiovascular health and a research measure for the study of the cardiac conduction system and its autonomic controls. While zebrafish (Danio rerio) is an ideal vertebrate model for understanding heart development, HRV has only recently been investigated in this system. We have previously demonstrated that nkx2.5 and nkx2.7, two homologues of Nkx2-5 expressed in zebrafish cardiomyocytes, play vital roles in maintaining cardiac chamber-specific characteristics...
June 14, 2017: American Journal of Physiology. Regulatory, Integrative and Comparative Physiology
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