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Heart rate variability and health

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https://www.readbyqxmd.com/read/28649873/can-you-snooze-your-way-to-an-a-exploring-the-complex-relationship-between-sleep-autonomic-activity-wellbeing-and-performance-in-medical-students
#1
Erin Cvejic, Shiny Huang, Uté Vollmer-Conna
OBJECTIVE: Medical training brings with it multiple stressors, including demanding workloads in highly competitive environments, with well-documented impact on psychiatric morbidity. This study evaluated the impact of sleep-related factors on psychological wellbeing, cognitive task performance and academic standing in medical students. METHODS: A total of 59 undergraduate medical students took part in this cross-sectional study over two consecutive days. Participants responded to questionnaires about their physical and psychological health, sleep, functioning and academic performance at the initial visit...
June 1, 2017: Australian and New Zealand Journal of Psychiatry
https://www.readbyqxmd.com/read/28642208/assessing-the-efficacy-of-imagery-enhanced-cognitive-behavioral-group-therapy-for-social-anxiety-disorder-study-protocol-for-a-randomized-controlled-trial
#2
Peter M McEvoy, Michelle L Moulds, Jessica R Grisham, Emily A Holmes, David A Moscovitch, Delia Hendrie, Lisa M Saulsman, Ottmar V Lipp, Robert T Kane, Ronald M Rapee, Matthew P Hyett, David M Erceg-Hurn
Cognitive behavior group therapy (CBGT) is effective for social anxiety disorder (SAD), but a substantial proportion of patients do not typically achieve normative functioning. Cognitive behavioral models of SAD emphasize negative self-imagery as an important maintaining factor, and evidence suggests that imagery is a powerful cognitive mode for facilitating affective change. This study will compare two group CBGT interventions, one that predominantly uses verbally-based strategies (VB-CBGT) and another that predominantly uses imagery-enhanced strategies (IE-CBGT), in terms of (a) efficacy, (b) mechanisms of change, and (c) cost-effectiveness...
June 19, 2017: Contemporary Clinical Trials
https://www.readbyqxmd.com/read/28640142/the-derivation-and-validation-of-a-simple-model-for-predicting-in-hospital-mortality-of-acutely-admitted-patients-to-internal-medicine-wards
#3
Ali Sakhnini, Walid Saliba, Naama Schwartz, Naiel Bisharat
Limited information is available about clinical predictors of in-hospital mortality in acute unselected medical admissions. Such information could assist medical decision-making.To develop a clinical model for predicting in-hospital mortality in unselected acute medical admissions and to test the impact of secondary conditions on hospital mortality.This is an analysis of the medical records of patients admitted to internal medicine wards at one university-affiliated hospital. Data obtained from the years 2013 to 2014 were used as a derivation dataset for creating a prediction model, while data from 2015 was used as a validation dataset to test the performance of the model...
June 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28638496/effect-of-early-follow-up-after-hospital-discharge-on-outcomes-in-patients-with-heart-failure-or-chronic-obstructive-pulmonary-disease-a-systematic-review
#4
(no author information available yet)
BACKGROUND: Transitions in care can increase patients' vulnerability to adverse events. In particular, patients admitted for heart failure or chronic obstructive pulmonary disorder (COPD) have high rates of readmission and return emergency department visits. Heart failure patients have the highest 30-day readmission rates in Canada, and COPD patients comprise the highest volume of readmissions. Combined, these two conditions account for the largest number of emergency department returns...
2017: Ontario Health Technology Assessment Series
https://www.readbyqxmd.com/read/28636519/how-we-eat-may-be-as-important-as-what-we-eat-eating-behaviour-and-heart-rate-variability
#5
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/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/28628383/cardiovascular-response-of-an-acute-exergame-session-in-prepubertal-obese-children
#7
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
#8
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/28623891/systolic-blood-pressure-variability-in-patients-with-early-severe-sepsis-or-septic-shock-a-prospective-cohort-study
#9
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/28622568/per-protocol-investigation-of-a-best-practice-exercise-referral-scheme
#10
L Stewart, E Dolan, P Carver, P A Swinton
OBJECTIVES: To investigate the effects of an exercise referral scheme (ERS) aligned to the UK best practice guidelines on a range of outcomes including those associated with key health concerns of the Scottish population. STUDY DESIGN: A longitudinal design with data collection at three time points (baseline, midway and post) during a 12-week ERS intervention was employed. METHODS: Health-related physical fitness was assessed through measurement of resting heart rate, blood pressure, FEV1:FEV6 (ratio of forced expiratory volume over one [FEV1] and six [FEV6] seconds), body mass and peak oxygen uptake (VO2 peak), whilst functional capacity was assessed through the five times sit to stand test...
June 12, 2017: Public Health
https://www.readbyqxmd.com/read/28618917/reduced-cardiovascular-activation-following-chronic-stress-in-caregivers-of-people-with-anorexia-nervosa
#11
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/28616898/smoking-and-the-eye-what-qu%C3%A3-bec-teenagers-know-and-fear
#12
Julie Brûlé, Benoît Tousignant, Stéphanie Marcotte, Marie-Christelle Moreau
BACKGROUND: Although most people associate smoking with lung cancer and heart disease, few are aware of the impact of smoking on ocular health. Studies have suggested a better knowledge of this association might promote higher quit rates, particularly in teenagers. The purpose of our study was to determine the knowledge of teenagers about the effects of smoking on ocular health and the fear associated with several tobacco-related health conditions. METHODS: A self-administered questionnaire was distributed to 180 high school students aged 14 to 17 years...
June 14, 2017: Clinical & Experimental Optometry: Journal of the Australian Optometrical Association
https://www.readbyqxmd.com/read/28615160/nkx2-5-is-essential-to-establish-normal-heart-rate-variability-in-the-zebrafish-embryo
#13
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
https://www.readbyqxmd.com/read/28615157/designing-prototyping-and-evaluating-digital-mindfulness-applications-a-case-study-of-mindful-breathing-for-stress-reduction
#14
Bin Zhu, Anders Hedman, Shuo Feng, Haibo Li, Walter Osika
BACKGROUND: During the past decade, there has been a rapid increase of interactive apps designed for health and well-being. Yet, little research has been published on developing frameworks for design and evaluation of digital mindfulness facilitating technologies. Moreover, many existing digital mindfulness applications are purely software based. There is room for further exploration and assessment of designs that make more use of physical qualities of artifacts. OBJECTIVE: The study aimed to develop and test a new physical digital mindfulness prototype designed for stress reduction...
June 14, 2017: Journal of Medical Internet Research
https://www.readbyqxmd.com/read/28615045/vigorous-physical-activity-predicts-higher-heart-rate-variability-among-younger-adults
#15
Richard May, Victoria McBerty, Adam Zaky, Melino Gianotti
BACKGROUND: Baseline heart rate variability (HRV) is linked to prospective cardiovascular health. We tested intensity and duration of weekly physical activity as predictors of heart rate variability in young adults. Time and frequency domain indices of HRV were calculated based on 5-min resting electrocardiograms collected from 82 undergraduate students. Hours per week of both moderate and vigorous activity were estimated using the International Physical Activity Questionnaire. In regression analyses, hours of vigorous physical activity, but not moderate activity, significantly predicted greater time domain and frequency domain indices of heart rate variability...
June 14, 2017: Journal of Physiological Anthropology
https://www.readbyqxmd.com/read/28610988/genome-wide-association-study-of-heart-rate-and-its-variability-in-hispanic-latino-cohorts
#16
Kathleen F Kerr, Christy L Avery, Henry J Lin, Laura M Raffield, Qian S Zhang, Brian L Browning, Sharon R Browning, Matthew P Conomos, Stephanie M Gogarten, Cathy C Laurie, Tamar Sofer, Timothy A Thornton, Chancellor Hohensee, Rebecca D Jackson, Charles Kooperberg, Yun Li, Raúl Méndez-Giráldez, Marco V Perez, Ulrike Peters, Alexander P Reiner, Zhu-Ming Zhang, Jie Yao, Nona Sotoodehnia, Kent D Taylor, Xiuqing Guo, Leslie A Lange, Elsayed Z Soliman, James G Wilson, Jerome I Rotter, Susan R Heckbert, Deepti Jain, Eric A Whitsel
BACKGROUND: Although time-domain measures of heart rate variability (HRV) are used to estimate cardiac autonomic tone and disease risk in multi-ethnic populations, the genetic epidemiology of HRV in Hispanics/Latinos has not been characterized. OBJECTIVE: Conduct a genome-wide association study (GWAS) of heart rate (HR) and its variability in the Hispanic Community Health Study / Study of Latinos, Multi-Ethnic Study of Atherosclerosis, and Women's Health Initiative Hispanic SNP-Health Association Resource project (n=13,767)...
June 10, 2017: Heart Rhythm: the Official Journal of the Heart Rhythm Society
https://www.readbyqxmd.com/read/28608523/the-effects-of-twelve-weeks-of-tai-chi-practice-on-anxiety-in-stressed-but-healthy-people-compared-to-exercise-and-wait-list-groups-a-randomized-controlled-trial
#17
Shuai Zheng, Christine Kim, Sara Lal, Peter Meier, David Sibbritt, Chris Zaslawski
OBJECTIVE: This randomized controlled trial was undertaken to determine whether 12 weeks of Tai Chi (TC) practice can reduce anxiety in healthy but stressed people. METHOD: Fifty participants were randomized into TC (n=17), exercise (n=17), and wait-list (WL) groups (n=16). Outcome measures used were State Trait Anxiety Inventory, Perceived Stress Scale 14 (PSS14), blood pressure and heart rate variability, visual analogue scale (VAS), and Short Form 36. RESULTS: Significant improvements were observed from baseline for both TC and exercise groups for both state (p <0...
June 13, 2017: Journal of Clinical Psychology
https://www.readbyqxmd.com/read/28605521/recorded-and-reported-sleepiness-the-association-between-brain-arousal-in-resting-state-and-subjective-daytime-sleepiness
#18
Philippe Jawinski, Jennifer Kittel, Christian Sander, Jue Huang, Janek Spada, Christine Ulke, Kerstin Wirkner, Tilman Hensch, Ulrich Hegerl
Objectives: Daytime sleepiness is a significant public health concern. Early evidence points towards the computerized VIGALL (Vigilance Algorithm Leipzig) as time-efficient tool to assess sleepiness objectively. In the present study, we investigated the association between VIGALL variables of EEG-vigilance (indicating brain arousal in resting state) and subjective daytime sleepiness in the LIFE cohort study. Additionally, we validated VIGALL against the self-rated likelihood of having fallen asleep during the conducted resting EEG and against heart periods...
June 12, 2017: Sleep
https://www.readbyqxmd.com/read/28603562/meditation-in-stressed-older-adults-improvements-in-self-rated-mental-health-not-paralleled-by-improvements-in-cognitive-function-or-physiological-measures
#19
Barry S Oken, Helané Wahbeh, Elena Goodrich, Daniel Klee, Tabatha Memmott, Meghan Miller, Rongwei Fu
To determine if mindfulness meditation (MM) in older adults improves cognition and, secondarily, if MM improves mental health and physiology, 134 at least mildly stressed 50-85 year olds were randomized to a six-week MM intervention or a waitlist control. Outcome measures were assessed at baseline and two months later at Visit 2. The primary outcome measure was an executive function/attentional measure (flanker task). Other outcome measures included additional cognitive assessments, salivary cortisol, respiratory rate, heart rate variability, Positive and Negative Affect Schedule (PANAS), Center for Epidemiologic Studies Depression (CESD), Perceived Stress Scale (PSS), Neuroticism-Extraversion-Openness (NEO) personality traits, and SF-36 health-related quality of life...
June 2017: Mindfulness
https://www.readbyqxmd.com/read/28596271/extracting-aerobic-system-dynamics-during-unsupervised-activities-of-daily-living-using-wearable-sensor-machine-learning-models
#20
Thomas Beltrame, Robert Amelard, Alexander Wong, Richard L Hughson
Physical activity levels are related through algorithms to the energetic demand with no information regarding the integrity of the multiple physiological systems involved in the energetic supply. Longitudinal analysis of the oxygen uptake (VO2) by wearable sensors in realistic settings might permit development of a practical tool for the study of the longitudinal aerobic system dynamics (i.e., VO2 kinetics). This study evaluated aerobic system dynamics based on predicted VO2 data obtained from wearable sensors during unsupervised activities of daily living (uADL)...
June 8, 2017: Journal of Applied Physiology
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