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Heart variability

Jaak Jürimäe, Sille Vaiksaar, Priit Purge
This investigation examined the effects of acute rowing exercise on a panel of 12 different inflammatory cytokines. Fifteen female rowers (18.3±1.6 yrs; 172.0±5.0 cm; 67.5±8.8 kg; maximal oxygen consumption [VO2 max]: 47.2±7.9 ml.min.-1 kg-1 ) completed a 1-h endurance exercise (distance: 12.1±1.1 km; energy expenditure [EE]: 639±69 kcal; heart rate: 151±7 beats.min-1 ; intensity: 79.6±3.5% of the second ventilatory turn point). Venous blood samples were analysed for interleukin (IL)-2, IL-4, IL-6, IL-8, IL-10, vascular endothelial growth factor (VEGF), interferon-gamma (IFN-γ), tumor necrosis factor-alpha (TNF-α), IL-1α, IL-1β, monocyte chemoattractant protein-1 (MCP-1) and epidermal growth factor (EGF) concentrations...
November 12, 2018: International Journal of Sports Medicine
Lanying He, Jian Wang, Lili Zhang, Xiaoqiang Zhang, Weiwei Dong, Hao Yang
Acute ischemic stroke (AIS) may experience early neurological deterioration (END) and have high risks of recurrent ischemic strokes (RIS), which are often associated with a poor outcome. Post-stroke prognosis is associated with autonomic status. Recently, studies showed that heart rate variability (HRV) is an early outcome predictor in acute stroke patients. The purpose of our study was to investigate association decreased HRV by fractal dimension (FD) with early END within 72 h of admission and 1-year RIS...
November 5, 2018: Journal of the Neurological Sciences
German Cediel, Yader Sandoval, Anne Sexter, Anna Carrasquer, Maribel González-Del-Hoyo, Gil Bonet, Carme Boqué, Karen Schulz, Stephen W Smith, Antoni Bayes-Genis, Fred S Apple, Alfredo Bardaji
OBJECTIVE: Despite adverse prognoses of type 2 myocardial infarction and myocardial injury, an effective, practical risk stratification method remains an unmet clinical need. We sought to develop an efficient clinical bedside tool for estimating the risk of major adverse cardiovascular events at 180 days for this patient population. METHODS: The derivation cohort included patients with type 2 myocardial infarction or myocardial injury admitted to a tertiary hospital between 2012 and 2013 (n=611)...
November 9, 2018: American Journal of Medicine
Riccardo Favilla, Veronica Chiara Zuccala, Giuseppe Coppini
Unobtrusive monitoring of vital signs is relevant for both medical (patient monitoring) and non-medical applications (e.g. stress and fatigue monitoring). In this work, we focus on the use of imaging photoplethysmography (iPPG). High frame rate videos were acquired by using a monochrome camera and an op- tical band-pass filter (560 ± 20 nm). To enhance iPPG signal, we investigated the use of Independent Component Analysis (ICA) pre-processing applied to iPPG signal from different regions of the face. Methodology was tested on 30 healthy volunteers...
November 7, 2018: IEEE Journal of Biomedical and Health Informatics
João P Paulo Lopes-Silva, Valéria Leme Gonçalves Panissa, Ursula Ferreira Julio, Emerson Franchini
Lopes-Silva, JP, Panissa, VLG, Julio, UF, and Franchini, E. Influence of physical fitness on Special Judo Fitness Test performance: a multiple linear regression analysis. J Strength Cond Res XX(X): 000-000, 2018-The purpose of this study was to identify the physical fitness variables that best predict Special Judo Fitness Test (SJFT) performance. Thirty-five male experienced judo athletes took part in this study. All athletes performed 5 tests: upper- and lower-body cycle ergometer graded exercise tests; upper- and lower-body Wingate tests; and SJFT...
November 8, 2018: Journal of Strength and Conditioning Research
Johann M D'Souza, Margaret Wardle, Charles E Green, Scott D Lane, Joy M Schmitz, Anka A Vujanovic
OBJECTIVE: Substance use disorders and posttraumatic stress symptoms are commonly comorbid. Previous studies have established that those with substance use disorders or posttraumatic stress disorder (PTSD) have lower high frequency-heart rate variability (HF-HRV) compared to controls, suggesting that low HF-HRV may be a biomarker of a common physiological mechanism underlying both disorders. We evaluated HF-HRV as a potential biomarker of a common underlying process by testing whether lower HF-HRV related to greater severity of substance use and PTSD symptoms in individuals with both substance use disorders and at least four symptoms of PTSD...
November 11, 2018: Journal of Dual Diagnosis
Daniel Gensler, Tim Salinger, Markus Düring, Kristina Lorenz, Roland Jahns, Tobias Wech, Stefan Frantz, Georg Ertl, Peter M Jakob, Peter Nordbeck
PURPOSE: Cardiac T1 mapping has become an increasingly important imaging technique, contributing novel diagnostic options. However, currently utilized methods are often associated with accuracy problems because of heart rate variations and cardiac arrhythmia, limiting their value in clinical routine. This study aimed to introduce an improved arrhythmia-related robust T1 mapping sequence called RT-TRASSI (real-time Triggered RAdial Single-Shot Inversion recovery). METHODS: All measurements were performed on a 3...
November 12, 2018: Magnetic Resonance in Medicine: Official Journal of the Society of Magnetic Resonance in Medicine
Nikhil Singh, Kegan James Moneghetti, Jeffrey Wilcox Christle, David Hadley, Daniel Plews, Victor Froelicher
The autonomic nervous system plays a major role in optimising function of the cardiovascular (CV) system, which in turn has important implications for CV health. Heart rate variability (HRV) is a measurable reflection of this balance between sympathetic and parasympathetic tone and has been used as a marker for cardiac status and predicting CV outcomes. Recently, the availability of commercially available heart rate (HR) monitoring systems has had important CV health implications and permits ambulatory CV monitoring on a scale not achievable with traditional cardiac diagnostics...
August 2018: Arrhythmia & Electrophysiology Review
Ji-Xuan Liu, Yan-Ping Li, Bo-Han Liu, Xiao-Jing Zhao, Ze-Yu Zhang, Jin-Da Wang, Qian Jia, Chun-Lei Liu, Xiao-Jian Gao, Zhen-Guo Xu, Hua-Wei Zhang, Lin-Nan Song, Zhi-Jun Sun, Kun-Lun He
Background: Growth-differentiation factor-15 (GDF-15) is a promising prognostic biomarker in patients with chronic heart failure (CHF). Comparatively little is known about the value of repeated measurement of GDF-15 with CHF in Chinese Han population. This study sought to identify the clinical value of repeated measurement of GDF-15 in Chinese Han patients with post-myocardial infarction CHF. Methods: In total, 232 consecutive Chinese Han patients with post-myocardial infarction CHF were enrolled prospectively from January 2014 to June 2016...
October 2018: Journal of Geriatric Cardiology: JGC
Thiago R Lopes, Jeann L Sabino-Carvalho, Thiago H N Ferreira, José E Succi, Antônio C Silva, Bruno M Silva
Repeated sprint exercise (RSE) acutely impairs post-exercise heart rate (HR) recovery (HRR) and time-domain heart rate variability (i. e., RMSSD), likely in part, due to lactic acidosis-induced reduction of cardiac vagal reactivation. In contrast, ischemic preconditioning (IPC) mediates cardiac vagal activation and augments energy metabolism efficiency during prolonged ischemia followed by reperfusion. Therefore, we investigated whether IPC could improve recovery of cardiac autonomic control from RSE partially via improved energy metabolism responses to RSE...
2018: Frontiers in Physiology
Catherine Garcia, Marc A Garcia, Jennifer A Ailshire
BACKGROUND: The US Latino population is rapidly aging and becoming increasingly diverse with respect to nativity and national origin. Increased longevity along with medical advancements in treatment have resulted in a higher number of older Latinos living with morbidity. Therefore, there is a need to understand variability in Latino health among older adults. OBJECTIVES: This paper documents mid- and late-life health differences in morbidity by race/ethnicity, nativity, and country of origin among adults aged 50 and older...
2018: Demographic Research
Piero Gentile, Alessia Paldino, Antonio Cannatà, Jessica Artico, Giulia Barbati, Federica Ramani, Enrico Fabris, Aneta Aleksova, Davide Stolfo, Massimo Zecchin, Marco Merlo, Gianfranco Sinagra
BACKGROUND: Left bundle branch block (LBBB) negatively affects prognosis in heart failure patients with a reduced left ventricular ejection fraction (LVEF). Less is known about the prognostic role of LBBB in dilated cardiomyopathy (DCM) with intermediate LVEF (between 36% and 50%). We sought to assess the role of LBBB in optimally treated DCM patients with mildly to moderately reduced LVEF and to determine the possible variables associated with subsequent LVEF reduction. METHODS: We retrospectively analyzed DCM patients with LVEF >35% after 3-to-9 months of optimal medical treatment (OMT) consecutively evaluated from 1990 to 2010...
November 5, 2018: International Journal of Cardiology
Amber Young, Vivek Nagaraja, Mark Basilious, Mirette Habib, Whitney Townsend, Heather Gladue, David Badesch, J Simon R Gibbs, Deepa Gopalan, Alessandra Manes, Ronald Oudiz, Toru Satoh, Adam Torbicki, Fernando Torres, Vallerie McLaughlin, Dinesh Khanna
OBJECTIVE: Pulmonary arterial hypertension (PAH) has high morbidity and mortality in connective tissue diseases (CTDs), especially systemic sclerosis (SSc). In this systematic review, we provide an update on screening measures for early detection of PAH in CTD. METHODS: Manuscripts published between July 2012 and October 2017, which incorporated screening measures to identify patients with PAH by right heart catheterization, were identified. Risk of bias was assessed using the QUADAS-2 tool...
October 14, 2018: Seminars in Arthritis and Rheumatism
Tuyet T N Nguyen, Julien Némery, Nicolas Gratiot, Emilie Strady, Viet Quoc Tran, An Truong Nguyen, Joanne Aimé, Alice Peyne
Saigon-Dongnai Rivers in Southern Vietnam is a complex lowland hydrological network of tributaries that is strongly influenced by the tidal cycles. The increasing economic, industrial and domestic developments in and around Ho Chi Minh City (HCMC) have led to serious impacts on water quality due to lack of appropriate wastewaters treatment. Drinking water production is impacted and the large aquaculture production areas may also be affected. We analyzed spatial and seasonal variability of nutrient concentrations (Phosphorus, Nitrogen and Silica) and eutrophication indicators (Organic Carbon, Chlorophyll-a and Dissolved Oxygen) based on bi-monthly monitoring during two hydrological cycles (July 2015-December 2017)...
October 26, 2018: Science of the Total Environment
Rhaí André Arriel, Hiago Leandro Rodrigues de Souza, Gustavo Ribeiro da Mota, Moacir Marocolo
Brief moments of blood flow occlusion followed by reperfusion may promote enhancements in exercise performance. Thus, this study assessed the 24-h effect of post-exercise ischemic conditioning (PEIC) on exercise performance and physiological variables in trained cyclists. In a randomized, single-blind study, 28 trained cyclists (27.1 ± 1.4 years) performed a maximal incremental cycling test (MICT). The outcome measures were creatine kinase (CK), muscle soreness and perceived recovery status, heart rate, perceived exertion and power output...
2018: PloS One
S D Runenko, E E Achkasov, A O Razina, O A Sultanova, N N Mushkambarov, M A Osadchuk
BACKGROUND: The relevance of this ensues from the fact that despite the numerous currently available health promotion training programs for the reduction of body weight, there is still the need for the development of the new forms of the efficacious physical training programs and the methods of motivation for compliance with them among the people of different age, sex and social status. AIM: The objective of the present study was to determine the role of motivational factors, including the assessment of the biological age, in the improvement of the effectiveness of the health promotion training programs for the reduction of the excess body weight...
2018: Voprosy Kurortologii, Fizioterapii, i Lechebnoĭ Fizicheskoĭ Kultury
Xuejiang Du, Jianshe Yu, Weidong Mi
INTRODUCTION: Cognitive dysfunction after surgery, a common clinical manifestation of postoperative psychonosema. It usually occurs after heart surgery, hip replacement, mandibular fractures, and other major operations. Dexmedetomidine can exert sedative, analgesic, anxiolytic effect, inhibits the sympathetic activity, maintains hemodynamic balance, helps reduce the amount of anesthetic agents, and relatively slightly depresses respiration. Preoperative administration of dexmedetomidine for sedation has been reported to reduce the incidence of acute postoperative delirium...
October 2018: Medicine (Baltimore)
Moon Joo Cheong, Sung-Eun Son, Hyung Won Kang, Youngseop Lee, Kwang-Ho Bae, Yeonseok Kang, Eun Mi Lee, Go-Eun Lee, Joo-Hee Seo, Hee-Wook Weon, Ji-Yoon Lee, Yeoung-Su Lyu
BACKGROUND: The heart continuously transmits information to the cerebrum during each pulse, and influences information processing such as perception, cognition, and emotion, which are processed in the cerebrum. This is the basis for the theory of oriental medicine widely used in psychiatric medicine and clinical practice, so-called Simjushinji (heart and brain) theory, that the heart controls the mind. The present study aims to analyze the correlation between heart and brain function by 24-hour active electrocardiogram and quantitative electroencephalogram (EEG) measurement under meditation...
October 2018: Medicine (Baltimore)
Killen Briones Claudett
No abstract text is available yet for this article.
December 2018: Journal of Intensive Care Medicine
Francesco Pelliccia, Giuseppe Limongelli, Camillo Autore, Juan Ramón Gimeno-Blanes, Cristina Basso, Perry Elliott
Cardiomyopathies (CMPs) are a heterogeneous group of heart muscle diseases with several different phenotypes defined as myocardial disorders in which the heart muscle is structurally and functionally abnormal in the absence of coronary artery disease, hypertension, valvular heart disease and congenital heart disease sufficient to explain the observed myocardial abnormality. CMPs can be classified into one of the following, i.e. hypertrophic CMP (HCM), dilated CMP (DCM), arrhythmogenic right ventricular CMP (ARVC), restrictive CMP (RCM), and unclassified CMPs...
October 30, 2018: International Journal of Cardiology
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