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Heart rate variability and health

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https://www.readbyqxmd.com/read/29455900/heart-rate-variability-is-associated-with-psychosocial-stress-in-distinct-social-domains
#1
Alexander Lischke, Robert Jacksteit, Anett Mau-Moeller, Rike Pahnke, Alfons O Hamm, Matthias Weippert
OBJECTIVE: Psychosocial stress is associated with substantial morbidity and mortality. Accordingly, there is a growing interest in biomarkers that indicate whether individuals show adaptive (i.e., stress-buffering and health-promoting) or maladaptive (i.e., stress-escalating and health-impairing) stress reactions in social contexts. As heart rate variability (HRV) has been suggested to be a biomarker of adaptive behavior during social encounters, it may be possible that inter-individual differences in HRV are associated with inter-individual differences regarding stress in distinct social domains...
March 2018: Journal of Psychosomatic Research
https://www.readbyqxmd.com/read/29450240/improving-cerebral-oxygenation-cognition-and-autonomic-nervous-system-control-of-a-chronic-alcohol-abuser-through-a-three-month-running-program
#2
Daniel Aranha Cabral, Kell Grandjean da Costa, Alexandre Hideki Okano, Hassan Mohamed Elsangedy, Vanessa Paula Rachetti, Eduardo Bodnariuc Fontes
The abusive use of alcohol has shown to be associated to cerebral damage, impaired cognition, poor autonomic nervous control, impaired cardiovascular health, increased levels of stress and anxiety, depression symptoms and poor quality of life. Aerobic exercise has shown to be an efficient tool to reduce and overcome these issues. In this case report, a patient (forty-four years old, male) under treatment in public psychiatric hospital, classified as having a substance use disorder, underwent a three-month running program...
December 2017: Addictive Behaviors Reports
https://www.readbyqxmd.com/read/29449657/neural-activity-induced-by-visual-food-stimuli-presented-out-of-awareness-a-preliminary-magnetoencephalography-study
#3
Katsuko Takada, Akira Ishii, Takashi Matsuo, Chika Nakamura, Masato Uji, Takahiro Yoshikawa
Obesity is a major public health problem in modern society. Appetitive behavior has been proposed to be partially driven by unconscious decision-making processes and thus, targeting the unconscious cognitive processes related to eating behavior is essential to develop strategies for overweight individuals and obese patients. Here, we presented food pictures below the threshold of awareness to healthy male volunteers and examined neural activity related to appetitive behavior using magnetoencephalography. We found that, among participants who did not recognize food pictures during the experiment, an index of heart rate variability assessed by electrocardiography (low-frequency component power/high-frequency component power ratio, LF/HF) just after picture presentation was increased compared with that just before presentation, and the increase in LF/HF was negatively associated with the score for cognitive restraint of food intake...
February 15, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29447167/activating-attachments-enhances-heart-rate-variability
#4
Richard A Bryant, Thea Hutanamon
Although activating mental representations of attachment figures is beneficial for psychological health, there is a paucity of knowledge of the underlying mechanisms. We investigated how priming attachment figures may modulate parasympathetic stress response. Participants (N = 62) with varying degrees of attachment security underwent a cold pressor test, and then imagined an attachment or non-attachment figure. Heart rate variability was assessed throughout the study. Participants with low avoidant attachment levels displayed less negative affect and greater heart rate variability following the attachment prime than those who imagined the non-attachment prime...
2018: PloS One
https://www.readbyqxmd.com/read/29446206/regression-equations-to-estimate-the-2-min-walk-distance-in-an-adult-asian-population-aged-40-75-years
#5
Fatim T Mirza, Sue Jenkins, Maria Justine, Nola Cecins, Kylie Hill
BACKGROUND AND OBJECTIVE: There is increased use of the 2-min walk test (2MWT) to assess functional exercise capacity. However, the distance achieved during this test may be difficult to interpret in the absence of reference values from a local population. Regression equations to estimate the 2-min walk distance (2MWD) only exist for American and Brazilian populations. The objective of this study was to develop regression equations to estimate the 2MWD in Malaysian adults who were free from major health problems...
February 14, 2018: Respirology: Official Journal of the Asian Pacific Society of Respirology
https://www.readbyqxmd.com/read/29433509/prognostic-indicators-in-the-world-health-organization-s-algorithm-for-seriously-ill-hiv-infected-inpatients-with-suspected-tuberculosis
#6
Rulan Griesel, Annemie Stewart, Helen van der Plas, Welile Sikhondze, Marc Mendelson, Gary Maartens
BACKGROUND: Criteria for the 2007 WHO algorithm for diagnosing tuberculosis among HIV-infected seriously ill patients are the presence of one or more danger signs (respiratory rate > 30/min, heart rate > 120/min, temperature > 39 °C, and being unable to walk unaided) and cough ≥ 14 days. Determining predictors of poor outcomes among HIV-infected inpatients presenting with WHO danger signs could result in improved treatment and diagnostic algorithms. METHODS: We conducted a prospective cohort study of inpatients presenting with any duration of cough and WHO danger signs to two regional hospitals in Cape Town, South Africa...
February 12, 2018: AIDS Research and Therapy
https://www.readbyqxmd.com/read/29428065/ectg-an-automatic-procedure-to-extract-digital-cardiotocographic-signals-from-digital-images
#7
Agnese Sbrollini, Angela Agostinelli, Ilaria Marcantoni, Micaela Morettini, Luca Burattini, Francesco Di Nardo, Sandro Fioretti, Laura Burattini
BACKGROUND AND OBJECTIVE: Cardiotocography (CTG), consisting in the simultaneous recording of fetal heart rate (FHR) and maternal uterine contractions (UC), is a popular clinical test to assess fetal health status. Typically, CTG machines provide paper reports that are visually interpreted by clinicians. Consequently, visual CTG interpretation depends on clinician's experience and has a poor reproducibility. The lack of databases containing digital CTG signals has limited number and importance of retrospective studies finalized to set up procedures for automatic CTG analysis that could contrast visual CTG interpretation subjectivity...
March 2018: Computer Methods and Programs in Biomedicine
https://www.readbyqxmd.com/read/29425579/the-impact-of-sleep-disordered-breathing-on-cardiovascular-health-in-overweight-children
#8
Rosemary S C Horne, Genevieve Shandler, Knarik Tamanyan, Aidan Weichard, Alexsandria Odoi, Sarah N Biggs, Margot J Davey, Gillian M Nixon, Lisa M Walter
BACKGROUND: Up to 50% of overweight/obese children have obstructive sleep apnea (OSA) compared to up to 6% of normal weight children. We compared cardiovascular variables between normal weight and overweight/obese children with and without OSA, and controls. METHODS: Seventy-four referred children and 24 normal weight non-snoring controls (8-18 years) were recruited. Referred children were grouped according to their obstructive apnea hypopnea index (OAHI): OSA (>1 event/h) or primary snoring (PS ≤ 1 event/h) and whether they were normal weight (BMI z-score <1...
January 2018: Sleep Medicine
https://www.readbyqxmd.com/read/29425373/associations-between-change-in-sedentary-behavior-and-outcome-in-standard-behavioral-weight-loss-treatment
#9
Stephanie G Kerrigan, Christine Call, Katherine Schaumberg, Evan Forman, Meghan L Butryn
Sedentary behavior, particularly in prolonged periods, is an important determinant of health. Little research exploring changes in sedentary behavior during behavioral weight loss programs exists. This study evaluated the magnitude of changes in total and prolonged sedentary behavior and how these changes related to changes in weight and cardiovascular outcomes during a behavioral weight loss program. Participants (n = 450) in two lifestyle modification programs underwent assessments of sedentary behavior (by accelerometry), weight, waist circumference, blood pressure, and resting heart rate at baseline and after 6 months of treatment...
February 7, 2018: Translational Behavioral Medicine
https://www.readbyqxmd.com/read/29422633/long-term-study-of-heart-rate-variability-responses-to-changes-in-the-solar-and-geomagnetic-environment
#10
Abdullah Alabdulgader, Rollin McCraty, Michael Atkinson, York Dobyns, Alfonsas Vainoras, Minvydas Ragulskis, Viktor Stolc
This long-term study examined relationships between solar and magnetic factors and the time course and lags of autonomic nervous system (ANS) responses to changes in solar and geomagnetic activity. Heart rate variability (HRV) was recorded for 72 consecutive hours each week over a five-month period in 16 participants in order to examine ANS responses during normal background environmental periods. HRV measures were correlated with solar and geomagnetic variables using multivariate linear regression analysis with Bonferroni corrections for multiple comparisons after removing circadian influences from both datasets...
February 8, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29421829/impact-of-depression-and-psychosocial-treatment-on-heart-rate-variability-in-patients-with-type-2-diabetes-mellitus-an-exploratory-analysis-based-on-the-heidis-trial
#11
Verena Zimmermann-Schlegel, Beate Wild, Peter Nawroth, Stefan Kopf, Wolfgang Herzog, Mechthild Hartmann
OBJECTIVES: To explore the impact of depression on heart rate (HR) and heart rate variability (HRV) as a marker of autonomic nervous system (ANS) impairment in depressed and non-depressed patients with advanced type 2 diabetes mellitus (T2DM) and to explore possible effects of an acceptance- and mindfulness-based group intervention (MBSR) on HR and HRV. METHODS: Alongside a prospective clinical trial, we collected demographic, psychosocial and clinical data from 113 chronic T2DM patients in a standardized setting...
February 8, 2018: Experimental and Clinical Endocrinology & Diabetes
https://www.readbyqxmd.com/read/29420320/high-intensity-handgrip-training-lowers-blood-pressure-and-increases-heart-rate-complexity-among-postmenopausal-women-a-pilot-study
#12
Danielle C Bentley, Cindy H P Nguyen, Scott G Thomas
OBJECTIVE: Handgrip exercise is an emerging strategy for resting blood pressure (BP) reduction requiring minimal time and exercise effort. However, the research literature is currently limited to handgrip protocol designs predominantly prescribing sustained grip contractions, with little assessment of alternative options. Furthermore, our understanding of the utility of handgrip exercise would be strengthened by an evaluation of the physiological mechanisms driving BP reductions and an assessment of the interindividual response variability...
February 7, 2018: Blood Pressure Monitoring
https://www.readbyqxmd.com/read/29414450/peak-circulatory-power-is-a-strong-prognostic-factor-in-patients-with-idiopathic-pulmonary-arterial-hypertension
#13
Yi Tang, Lei Yao, Zhihong Liu, Wenlin Xie, Xiuping Ma, Qin Luo, Zhihui Zhao, Zhiwei Huang, Liu Gao, Qi Jin, Xue Yu, Changming Xiong, Xinhai Ni, Yinkun Yan, Wenwei Qi
BACKGROUND: Studies have shown that peak circulatory power (peak CircP; peak oxygen uptake × peak systolic blood pressure) is a variable predictor of prognosis in patients with left heart failure. It remains unknown whether peak CircP also predicts outcome in patients with idiopathic pulmonary arterial hypertension (IPAH). METHODS: Patients with newly diagnosed IPAH who underwent symptom-limited cardiopulmonary exercise testing (CPET) from 1 January 2011 to 1 January 2014 in Fuwai Hospital were prospectively enrolled and followed for up to 66 months for cardiac events (mortality and lung transplantation)...
February 2018: Respiratory Medicine
https://www.readbyqxmd.com/read/29414364/association-patterns-for-size-fractioned-indoor-particulate-matter-and-black-carbon-and-autonomic-function-differ-between-patients-with-chronic-obstructive-pulmonary-disease-and-their-healthy-spouses
#14
Lu Pan, Wei Dong, Hongyu Li, Mark R Miller, Yahong Chen, Miranda Loh, Shaowei Wu, Junhui Xu, Xuan Yang, Masayuki Shima, Furong Deng, Xinbiao Guo
BACKGROUND: The effect of health status on the relationship between particulate matter (PM) and black carbon (BC) and cardiac autonomic function has not been examined sufficiently directly comparing patients with healthy participants. OBJECTIVES: To evaluate the association patterns between size-fractioned indoor PM and BC and cardiac autonomic function in chronic obstructive pulmonary disease (COPD) patients and their healthy spouses. METHODS: Twenty-four-hour heart rate variability (HRV) and heart rate (HR) was measured in eight pairs of stable COPD patients and their healthy spouses...
January 26, 2018: Environmental Pollution
https://www.readbyqxmd.com/read/29407285/heart-rate-variability-in-patients-with-bipolar-disorder-from-mania-to-euthymia
#15
Guilherme Luiz Lopes Wazen, Michele Lima Gregório, Andrew Haddon Kemp, Moacir Fernandes de Godoy
Bipolar Disorder (BD) is characterized by the occurrence of mania alternating with euthymia. The aim of the present study was to investigate the impact of BD on the autonomic nervous system, as indicated by heart rate variability (HRV). The study was registered in the Clinical Trials Registration (NCT01272518). Nineteen hospitalized, male patients (age: 34.0 ± 12.3 years) with type I BD were assessed during mania and at discharge on euthymia. HRV data were collected during 20- minutes in supine position at rest, on spontaneous breathing, using the Polar RS 800 CX frequencymeter...
January 12, 2018: Journal of Psychiatric Research
https://www.readbyqxmd.com/read/29404680/the-contribution-of-comorbidities-to-mortality-in-hospitalized-patients-with-heart-failure
#16
Oliver Riedel, C Ohlmeier, D Enders, A Elsässer, D Vizcaya, A Michel, S Eberhard, N Schlothauer, J Berg, E Garbe
BACKGROUND: Heart failure (HF) with reduced ejection fraction (HFrEF) has a worse prognosis than HF with preserved EF (HFpEF). The study aimed to evaluate whether different comorbidity profiles of HFrEF- and HFpEF-patients or HF-specific mechanisms contribute to a greater extent to this difference. METHODS: We linked data from two health insurances to data from a cardiology clinic hospital information system. Patients with a hospitalization with HF in 2005-2011, categorized as HFrEF (EF < 45%) or HFpEF (EF ≥ 45%), were propensity score (PS) matched to controls without HF on comorbidites and medication to assure similar comorbidity profiles of patients and their respective controls...
February 5, 2018: Clinical Research in Cardiology: Official Journal of the German Cardiac Society
https://www.readbyqxmd.com/read/29404559/development-and-validation-of-a-new-scoring-system-to-predict-survival-in-patients-with-myotonic-dystrophy-type-1
#17
Karim Wahbi, Raphaël Porcher, Pascal Laforêt, Abdallah Fayssoil, Henri Marc Bécane, Arnaud Lazarus, Maximilien Sochala, Tanya Stojkovic, Anthony Béhin, Sarah Leonard-Louis, Pauline Arnaud, Denis Furling, Vincent Probst, Dominique Babuty, Sybille Pellieux, Nicolas Clementy, Guillaume Bassez, Yann Péréon, Bruno Eymard, Denis Duboc
Importance: Life expectancy is greatly shortened in patients presenting with myotonic dystrophy type 1 (DM1), the most common neuromuscular disease. A reliable prediction of survival in patients with DM1 is critically important to plan personalized health supervision. Objective: To develop and validate a prognostic score to predict 10-year survival in patients with DM1. Design, Setting, and Participants: In this longitudinal cohort study, between January 2000 and November 2014, we enrolled 1296 adults referred to 4 tertiary neuromuscular centers in France for management of genetically proven DM1, including 1066 patients in the derivation cohort and 230 in the validation cohort...
February 5, 2018: JAMA Neurology
https://www.readbyqxmd.com/read/29402785/family-physician-led-group-visits-for-lifestyle-modification-in-women-with-weight-problems-a-pilot-intervention-and-follow-up-study
#18
Merthan Tunay, Hatice Kurdak, Sevgi Özcan, Çiğdem Özdemir, Zeliha Yelda Özer
OBJECTIVE: Lifestyle modification requires extensive information sharing and counseling. However, one-on-one primary care consultations are lacking to cover all necessary components due to time constraints. This preliminary study aims to investigate the feasibility and effects of lifestyle-changing intervention by family physician-led group visits (GVs) on weight management in overweight and obese women. METHODS: 60 volunteers fulfilling the inclusion criteria were enrolled...
February 7, 2018: Obesity Facts
https://www.readbyqxmd.com/read/29392084/cardiovascular-risk-factors-are-correlated-with-low-cognitive-function-among-older-adults-across-europe-based-on-the-share-database
#19
Joana Lourenco, Antonio Serrano, Alice Santos-Silva, Marcos Gomes, Claudia Afonso, Paula Freitas, Constanca Paul, Elisio Costa
Increased life expectancy is associated with a high prevalence of chronic, non-communicable diseases including cognitive decline and dementia. The purpose of this study was to evaluate the prevalence of cognitive impairment using three cognitive abilities (verbal fluency, numeracy and perceived memory) and their association with cardiovascular risk factors in seniors across Europe. Data from participants in wave 4 of the SHARE (Survey of Health, Ageing, and Retirement in Europe) database was used. Cognitive performance in perceived memory, verbal fluency and numeracy was evaluated using simple tests and a memory complaints questionnaire...
February 2018: Aging and Disease
https://www.readbyqxmd.com/read/29388764/comparative-cardiopulmonary-effects-of-particulate-matter-and-ozone-enhanced-smog-atmospheres-in-mice
#20
Mehdi Hazari, Kimberly Stratford, Q Todd Krantz, Charly King, Jonathan Krug, Aimen Farraj, M Ian Gilmour
This study was conducted to compare the cardiac effects of particulate matter (PM)-enhanced (SA-PM) and ozone(O3)-enhanced (SA-O3) smog atmospheres in mice. We hypothesized that SA-O3 would cause greater cardiac dysfunction than SA-PM based on our previous findings that when comparing whole and filtered air pollution mixtures, the latter causes greater acute cardiac effects in rodents. Radiotelemetered mice were exposed once whole-body to either SA-PM, SA-O3, or filtered air (FA) for 4 hours. Heart rate (HR) and electrocardiogram were recorded continuously before, during and after exposure...
February 1, 2018: Environmental Science & Technology
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