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resting heart rate

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https://www.readbyqxmd.com/read/27910284/resting-heart-rate-is-an-independent-predictor-of-death-in-patients-with-colorectal-pancreatic-and-non-small-cell-lung-cancer-results-of-a-prospective-cardiovascular-long-term-study
#1
Markus S Anker, Nicole Ebner, Bert Hildebrandt, Jochen Springer, Marianne Sinn, Hanno Riess, Stefan D Anker, Ulf Landmesser, Wilhelm Haverkamp, Stephan von Haehling
AIMS: Patients with advanced cancer have been shown to suffer from abnormal cardiac function and impaired exercise capacity that may contribute to their impaired quality of life. As tachycardia is considered as a sign of potential early cardiac damage, we sought to determine whether resting heart rate and other ECG-derived variables have prognostic value. METHODS AND RESULTS: From 2005 to 2010, we enrolled 145 patients with histologically confirmed cancer (36 colorectal, 72 pancreatic, and 37 non-small cell lung cancer patients) and 59 healthy controls...
December 2016: European Journal of Heart Failure
https://www.readbyqxmd.com/read/27908892/resting-heart-rate-trajectory-pattern-predicts-arterial-stiffness-in-a-community-based-chinese-cohort
#2
Shuhua Chen, Weijuan Li, Cheng Jin, Anand Vaidya, Jingli Gao, Hui Yang, Shouling Wu, Xiang Gao
OBJECTIVE: To examine whether the long-term resting heart rate (RHR) pattern can predict the risk of having arterial stiffness in a large ongoing cohort study. APPROACH AND RESULTS: This community-based cohort included 12 554 participants in the Kailun study, who were free of myocardial infarction, stroke, arrhythmia, and cancer. We used latent mixture modeling to identify RHR trajectories in 2006, 2008, and 2010. We used multivariate linear regression model to examine the association between RHR trajectory patterns and the risk of having arterial stiffness, which was assessed by brachial-ankle pulse wave velocity in 2010 to 2016...
December 1, 2016: Arteriosclerosis, Thrombosis, and Vascular Biology
https://www.readbyqxmd.com/read/27908504/association-of-resting-heart-rate-and-cardiovascular-disease-mortality-in-hypertensive-and-normotensive-rural-chinese
#3
Ming Zhang, Chengyi Han, Chongjian Wang, Jinjin Wang, Linlin Li, Lu Zhang, Bingyuan Wang, Yongcheng Ren, Hongyan Zhang, Xiangyu Yang, Yang Zhao, Junmei Zhou, Chao Pang, Lei Yin, Tianping Feng, Jingzhi Zhao, Xinping Luo, Dongsheng Hu
BACKGROUND: Studies have demonstrated an increased risk of cardiovascular disease (CVD)-associated death (CVD death) with increased resting heart rate (RHR); however, whether the association is consistent in rural Chinese with hypertension and normotension is unknown. We examined the association of RHR and CVD death by hypertension and normotension status in rural Chinese people. METHODS: Baseline data for 20,069 participants ≥18 years old were collected during July to August of 2007 and July to August of 2008; 17,151 (85...
November 28, 2016: Journal of Cardiology
https://www.readbyqxmd.com/read/27906796/cardiovascular-risk-factors-in-adolescents-with-celiac-disease-a-cross-sectional-population-based-study
#4
Amit Assa, Yael Frenkel-Nir, Dorit Tzur, Lior H Katz, Raanan Shamir
BACKGROUND: Recent data have shown that adults with celiac disease (CD) may have a higher prevalence of risk factors for cardiovascular disease (CVD) compared with the general population. Thus, we aimed to investigate the association of CD with CVD risk factors at late adolescence in a cross-sectional population based study. METHODS: A total of 2,001,353 Jewish Israeli adolescents who underwent a general health examination at median age of 17.1y from 1988 to 2015 were included...
November 30, 2016: Journal of Pediatric Gastroenterology and Nutrition
https://www.readbyqxmd.com/read/27905297/altered-thermoregulatory-responses-in-heart-failure-patients-exercising-in-the-heat
#5
Bryce N Balmain, Ollie Jay, Surendran Sabapathy, Danielle Royston, Glenn M Stewart, Rohan Jayasinghe, Norman R Morris
Heart failure (HF) patients appear to exhibit impaired thermoregulatory capacity during passive heating, as evidenced by diminished vascular conductance. Although some preliminary studies have described the thermoregulatory response to passive heating in HF, responses during exercise in the heat remain to be described. Therefore, the aim of this study was to compare thermoregulatory responses in HF and controls (CON) during exercise in the heat. Ten HF (NYHA classes I-II) and eight CON were included. Core temperature (Tc), skin temperature (Tsk), and cutaneous vascular conductance (CVC) were assessed at rest and during 1 h of exercise at 60% of maximal oxygen uptake...
November 2016: Physiological Reports
https://www.readbyqxmd.com/read/27904984/parenting-behaviors-parent-heart-rate-variability-and-their-associations-with-adolescent-heart-rate-variability
#6
Rebecca A Graham, Brandon G Scott, Carl F Weems
Adolescence is a potentially important time in the development of emotion regulation and parenting behaviors may play a role. We examined associations among parenting behaviors, parent resting heart rate variability, adolescent resting heart rate variability and parenting behaviors as moderators of the association between parent and adolescent resting heart rate variability. Ninety-seven youth (11-17 years; 49.5 % female; 34 % African American, 37.1 % Euro-American, 22.6 % other/mixed ethnic background, and 7...
November 30, 2016: Journal of Youth and Adolescence
https://www.readbyqxmd.com/read/27895662/muscle-enriched-micrornas-isolated-from-whole-blood-are-regulated-by-exercise-and-are-potential-biomarkers-of-cardiorespiratory-fitness
#7
Joshua Denham, Priscilla R Prestes
MicroRNAs (miRNAs) are small non-coding RNA molecules that regulate gene expression post-transcriptionally. Evidence indicating miRNAs influence exercise-induced health and performance adaptations is mounting. Circulating miRNAs are responsible for intercellular communication and could serve as biomarkers for disease and exercise-related traits. Such biomarkers would contribute to exercise screening, monitoring, and the development of personalized exercise prescription. Accordingly, we investigated the impact of long-term strenuous aerobic exercise training and a single bout of maximal aerobic exercise on five muscle-enriched miRNAs implicated in exercise adaptations (miR-1, miR-133a, miR-181a, miR-486, and miR-494)...
2016: Frontiers in Genetics
https://www.readbyqxmd.com/read/27895488/advances-in-the-management-of-heart-failure-the-role-of-ivabradine
#8
REVIEW
Ursula Müller-Werdan, Georg Stöckl, Karl Werdan
A high resting heart rate (≥70-75 b.p.m.) is a risk factor for patients with heart failure (HF) with reduced ejection fraction (EF), probably in the sense of accelerated atherosclerosis, with an increased morbidity and mortality. Beta-blockers not only reduce heart rate but also have negative inotropic and blood pressure-lowering effects, and therefore, in many patients, they cannot be given in the recommended dose. Ivabradine specifically inhibits the pacemaker current (funny current, If) of the sinoatrial node cells, resulting in therapeutic heart rate lowering without any negative inotropic and blood pressure-lowering effect...
2016: Vascular Health and Risk Management
https://www.readbyqxmd.com/read/27894294/appropriate-threshold-levels-of-cardiac-beat-to-beat-variation-in-semi-automatic-analysis-of-equine-ecg-recordings
#9
Mette Flethøj, Jørgen K Kanters, Philip J Pedersen, Maria M Haugaard, Helena Carstensen, Lisbeth H Olsen, Rikke Buhl
BACKGROUND: Although premature beats are a matter of concern in horses, the interpretation of equine ECG recordings is complicated by a lack of standardized analysis criteria and a limited knowledge of the normal beat-to-beat variation of equine cardiac rhythm. The purpose of this study was to determine the appropriate threshold levels of maximum acceptable deviation of RR intervals in equine ECG analysis, and to evaluate a novel two-step timing algorithm by quantifying the frequency of arrhythmias in a cohort of healthy adult endurance horses...
November 28, 2016: BMC Veterinary Research
https://www.readbyqxmd.com/read/27892887/cardiorespiratory-fitness-and-nonfatalcardiovascular-events-a-population-based-follow-up-study
#10
Hassan Khan, Nabil Jaffar, Rainer Rauramaa, Sudhir Kurl, Kai Savonen, Jari A Laukkanen
BACKGROUND: To examine the prognostic value of cardiorespiratory fitness (CRF) with risk of first major nonfatal myocardial infarction (MI), stroke, and heart failure (HF) events. METHODS: Cardiorespiratory fitness, as measured by maximal oxygen uptake, was assessed at baseline in a prospective cohort of 2,089 men aged 42 to 61years. RESULTS: During a mean (SD) follow-up of 19.1(8.4) years, 522 nonfatal acute MI events, 198 acute all-cause nonfatal stroke events, and 221 nonfatal HF events were recorded...
November 2, 2016: American Heart Journal
https://www.readbyqxmd.com/read/27890138/individual-differences-in-cardiorespiratory-measures-of-mental-workload-an-investigation-of-negative-affectivity-and-cognitive-avoidant-coping-in-pilot-candidates
#11
Mariel Grassmann, Elke Vlemincx, Andreas von Leupoldt, Omer Van den Bergh
Cardiorespiratory measures provide useful information in addition to well-established self-report measures when monitoring operator capacity. The purpose of our study was to refine the assessment of operator load by considering individual differences in personality and their associations with cardiorespiratory activation. Physiological and self-report measures were analyzed in 115 pilot candidates at rest and while performing a multiple task covering perceptual speed, spatial orientation, and working memory...
March 2017: Applied Ergonomics
https://www.readbyqxmd.com/read/27885999/peripheral-vasomotor-activity-assessment-using-a-continuous-wavelet-analysis-on-webcam-photoplethysmographic-signals
#12
F Bousefsaf, C Maaoui, A Pruski
BACKGROUND: Vasoconstriction and vasodilation phenomena reflect the relative changes in the vascular bed. They induce particular modifications in the pulse wave magnitude. Webcams correspond to remote sensors that can be employed to measure the pulse wave in order to compute the pulse frequency. OBJECTIVE: Record and analyze pulse wave signal with a low-cost webcam to extract the amplitude information and assess the vasomotor activity of the participant. METHODS: Photoplethysmographic signals obtained from a webcam are analyzed through a continuous wavelet transform...
November 25, 2016: Bio-medical Materials and Engineering
https://www.readbyqxmd.com/read/27885415/resting-heart-rate-and-risk-of-metabolic-syndrome-in-adults-a-dose-response-meta-analysis-of-observational-studies
#13
REVIEW
Xuejiao Liu, Xinping Luo, Yu Liu, Xizhuo Sun, Chengyi Han, Lu Zhang, Bingyuan Wang, Yongcheng Ren, Yang Zhao, Dongdong Zhang, Dongsheng Hu, Ming Zhang
The magnitude of the risk of metabolic syndrome (MetS) with increased resting heart rate (RHR) has been inconsistently reported in some observational studies, and whether a dose-response relationship exists between RHR and MetS is unclear. We performed a meta-analysis including dose-response analysis to quantitatively evaluate this association in adults. We searched PubMed, Web of Knowledge, China National Knowledge Infrastructure, and WanFang databases for articles published up to April 2, 2016. A random-effects model was used to pool relative risks (RRs) and 95% confidence intervals (CIs); restricted cubic spline function was used to assess the dose-response relationship...
November 25, 2016: Acta Diabetologica
https://www.readbyqxmd.com/read/27884959/cardiac-responses-to-exercise-distinguish-postural-orthostatic-tachycardia-syndrome-variants
#14
Paolo T Pianosi, Darrell R Schroeder, Philip R Fischer
We previously showed that one-third of adolescents with postural orthostatic tachycardia syndrome (POTS) have hyperkinetic circulation. In a subsequent cohort, we compare participants with POTS grouped according to cardiac output (Q˙) versus oxygen uptake (V˙O2) function, whose circulatory response to exercise lay at the lower end of this distribution. We hypothesized that such grouping determines the circulatory response to incremental-protocol, upright, cycle ergometry by whatever blend of flow and resistance adjustments best maintains normal blood pressure...
November 2016: Physiological Reports
https://www.readbyqxmd.com/read/27881424/temporal-reduction-in-chronotropic-index-predicts-risk-of-cardiovascular-death-among-healthy-middle-aged-men-a-28-year-follow-up-study
#15
Kristian Engeseth, Christian Hodnesdal, Irene Grundvold, Knut Liestøl, Knut Gjesdal, Sverre E Kjeldsen, Jan E Erikssen, Johan Bodegard, Per Torger Skretteberg
BACKGROUND: Chronotropic index is a standardized measure of heart rate (HR) increment during exercise that reflects the combined effects of age, resting HR, and physical fitness. Low chronotropic index has been reported to predict disease and death. We tested whether temporal change in chronotropic index over 7 years influenced risk of cardiovascular death through up to 28 years. METHODS AND RESULTS: Chronotropic index was calculated ([achieved maximal HR-resting HR]/[age-predicted maximal HR-resting HR]) after a symptom-limited bicycle ECG exercise test in 1420 healthy men at 2 examinations 7 years apart, in 1972 and 1979...
November 23, 2016: Journal of the American Heart Association
https://www.readbyqxmd.com/read/27875547/how-accurate-is-the-prediction-of-maximal-oxygen-uptake-with-treadmill-testing
#16
John R Wicks, Neil B Oldridge
BACKGROUND: Cardiorespiratory fitness measured by treadmill testing has prognostic significance in determining mortality with cardiovascular and other chronic disease states. The accuracy of a recently developed method for estimating maximal oxygen uptake (VO2peak), the heart rate index (HRI), is dependent only on heart rate (HR) and was tested against oxygen uptake (VO2), either measured or predicted from conventional treadmill parameters (speed, incline, protocol time). METHODS: The HRI equation, METs = 6 x HRI- 5, where HRI = maximal HR/resting HR, provides a surrogate measure of VO2peak...
2016: PloS One
https://www.readbyqxmd.com/read/27875497/physical-activity-absolute-intensity-vs-relative-to-fitness-level-volumes
#17
Urho M Kujala, Julia Pietilä, Tero Myllymäki, Sara Mutikainen, Tiina Föhr, Ilkka Korhonen, Elina Helander
PURPOSE: To investigate in a real-life setting how moderate and vigorous intensity physical activity (PA) volumes differ according to absolute intensity recommendation and relative to individual fitness level by sex, age, and body mass index (BMI). METHODS: 23 224 Finnish employees (10 201 men, 13 023 women; ages 18-65 years; BMI 18.5-40.0 kg/m) participated in heart rate recording for 2+ days. We used heart rate and its variability, respiration rate, and on/off response information from R-R interval data calibrated by participant characteristics to objectively determine daily PA volume, as follows: daily minutes of absolute moderate (3-<6 multiples of resting metabolic rate; METs) and vigorous (≥6 METs) PA; and minutes relative to individual aerobic fitness for moderate (40-<60% of oxygen uptake reserve) and vigorous (≥60%) PA...
November 21, 2016: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/27871549/a-multicenter-study-of-the-analgesic-effects-of-epidural-chloroprocaine-after-lower-limb-orthopedic-surgery
#18
Hongwei Xu, Huiping Li, Yunxia Zuo, Baxian Yang, Yuke Tian, Qulian Guo, Jianguo Xu, Chaoran Wu
STUDY OBJECTIVE: To investigate the effects and optimal concentration of chloroprocaine for epidural analgesia after lower limb orthopedic surgery. DESIGN: Prospective, randomized, observational, multicenter clinical study. SETTING: Operating room, postoperative recovery area, university hospital. PATIENTS: One hundred and twenty patients from 4 hospitals were enrolled and randomized into 5 groups after lower limb orthopedic surgery under epidural anesthesia with lidocaine...
December 2016: Journal of Clinical Anesthesia
https://www.readbyqxmd.com/read/27867364/an-objective-screening-method-for-major-depressive-disorder-using-logistic-regression-analysis-of-heart-rate-variability-data-obtained-in-a-mental-task-paradigm
#19
Guanghao Sun, Toshikazu Shinba, Tetsuo Kirimoto, Takemi Matsui
BACKGROUND AND OBJECTIVES: Heart rate variability (HRV) has been intensively studied as a promising biological marker of major depressive disorder (MDD). Our previous study confirmed that autonomic activity and reactivity in depression revealed by HRV during rest and mental task (MT) conditions can be used as diagnostic measures and in clinical evaluation. In this study, logistic regression analysis (LRA) was utilized for the classification and prediction of MDD based on HRV data obtained in an MT paradigm...
2016: Frontiers in Psychiatry
https://www.readbyqxmd.com/read/27865723/mechanisms-of-effort-intolerance-in-patients-with-rheumatic-mitral-stenosis-combined-echocardiography-and-cardiopulmonary-stress%C3%A2-protocol
#20
Michal Laufer-Perl, Yaniv Gura, Jason Shimiaie, Jack Sherez, Gregg S Pressman, Galit Aviram, Simon Maltais, Ricki Megidish, Amir Halkin, Meirav Ingbir, Simon Biner, Gad Keren, Yan Topilsky
OBJECTIVES: This study sought to evaluate mechanisms of effort intolerance in patients with rheumatic mitral stenosis (MS). BACKGROUND: Combined stress echocardiography and cardiopulmonary testing allows assessment of cardiac function, hemodynamics, and oxygen extraction (A-Vo2 difference). METHODS: Using semirecumbent bicycle exercise, 20 patients with rheumatic MS (valve area 1.36 ± 0.4 cm(2)) were compared to 20 control subjects at 4 pre-defined activity stages (rest, unloaded, anaerobic threshold, and peak)...
November 10, 2016: JACC. Cardiovascular Imaging
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