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Korzeniowska-Kubacka Iwona - - 2010
BACKGROUND: The study's aim was to examine the effect of exercise training on left ventricular diastolic function (LVDF) and whether LVDF could predict an improvement in exercise capacity (EC) in post-myocardial infarction patients. METHODS: Forty-eight males, aged 56.4 +/- 7.2 years, with preserved left ventricular systolic function (LVSF) and mild ...
d'Udekem Yves - - 2009
BACKGROUND: Poor long-term outcomes are expected after Fontan surgery, but these perspectives have been tainted by the poorly functioning Fontans suffering from arrhythmias. No predictions of outcome can be quoted to the increasing number of Fontan patients free from arrhythmic complications. The parameters determining improved exercise capacity and quality of ...
Tigen Kür┼čat - - 2009
OBJECTIVE: Obesity is a nutritional disorder, which is associated with impaired left and right ventricular function. Impaired heart rate recovery (HRR) following a treadmill exercise test is an indicator of cardiovascular mortality. We investigated the utility of impaired HRR on the tissue Doppler imaging (TDI) echocardiographic estimates of left and ...
Keteyian Steven J - - 2009
To assess the safety of symptom-limited exercise testing in patients with New York Heart Association class II-IV heart failure symptoms due to left ventricular systolic dysfunction, we investigated the frequency of all-cause fatal and nonfatal major cardiovascular (CV) events among subjects enrolled in a prospective clinical trial (HF-ACTION). We hypothesized ...
Gimeno Juan R - - 2009
BACKGROUND: Non-sustained ventricular tachycardia (NSVT) during ambulatory electrocardiographic monitoring (typically occurring at rest or during sleep) is associated with an increased risk of sudden cardiac death in patients with hypertrophic cardiomyopathy. The prevalence and prognostic significance of ventricular arrhythmias during exercise is unknown. METHODS AND RESULTS: This was a cohort ...
M??ller Thomas - - 2009
INTRODUCTION: Exercise echocardiography assesses exercise-induced pulmonary hypertension. The upper normal limit of right ventricular systolic pressure during exercise is not well established. Our study aims to investigate the response of right ventricular systolic pressure in relation to aerobic capacity. METHODS AND RESULTS: Cardiopulmonary exercise testing using a treadmill, and echocardiography ...
Alves Guilherme B - - 2009
BACKGROUND: The allele threonine (T) of the angiotensinogen has been associated with ventricular hypertrophy in hypertensive patients and soccer players. However, the long-term effect of physical exercise in healthy athletes carrying the T allele remains unknown. We investigated the influence of methionine (M) or T allele of the angiotensinogen and ...
Draper David E - - 2009
Episodic symptoms, often reported during exertion, complicate the assessment of suspected supraventricular tachycardia (SVT). To examine the diagnostic sensitivity of graded exercise testing in young patients with documented SVT or ventricular preexcitation. A single-centre retrospective review identified 53 patients (5.1 to 17.5 years of age) with structurally normal hearts who ...
Aslani Amir - - 2009
BACKGROUND: Response of the human heart to exercise has been studied extensively, but little information is available on the effects of exhaustive exercise on cardiac performance. OBJECTIVES: The aim of this study was to evaluate the effect of severe prolong exercise on both left and right ventricular performance. To maximize ...
Klimes Katrin - - 2009
In this study we sought to determine, first, whether maximal exercise capacity reflects ventricular function, and second, whether the age of the patient, and the age of completion of the Fontan circulation, influence ventricular function and exercise performance. Cardiac magnetic resonance imaging and cardiopulmonary exercise testing were performed in 29 ...
Chicos Alexandru B - - 2009
Depressed parasympathetic activity has been proposed to be associated with an increased risk of sudden death. Parasympathetic effects (PE) on cardiac electrophysiology during exercise and recovery have not been studied in patients with left ventricular dysfunction. We performed noninvasive electrophysiological studies (NI-EPS) and characterized the electrophysiological properties of the sinus ...
Sequeira Ilan Buffo - - 2009
Arrhythmogenic right ventricular cardiomyopathy (ARVC) is increasingly recognized as an important cause of exertional sudden death in otherwise healthy young individuals and athletes. Graded exercise testing is routinely included in the evaluation of patients with suspected ARVC, but its diagnostic utility has not been systematically assessed. Using a single-center retrospective ...
Ziada Amal M - - 2009
OBJECTIVES: To investigate whether the combination of exercise training with the angiotensin-converting enzyme inhibitor lisinopril will have an additional beneficial effect on left ventricular function in spontaneously hypertensive rats. DESIGN: Twelve-week-old male rats were assigned to treadmill running (Ht-Ex; 20 m/min at 5 degrees grade, 1 h/day, 5 days/week), or ...
Singhal Shalabh - - 2009
Unexplained exertional dyspnea is a common and perplexing clinical problem. Myocardial ischemia and left ventricular systolic dysfunction are important cardiac causes, but are often not detected in these patients. Recently, exercise-induced left ventricular diastolic dysfunction and exercised-induced pulmonary hypertension have emerged as common alternative mechanisms. While conventional exercise treadmill echocardiography ...
Mannacio Vito Antonio - - 2009
OBJECTIVES: The influence of prosthesis-patient mismatch on outcome after aortic valve replacement is controversial. This study analyzed the impact of prosthesis-patient mismatch on survival, the extent of left ventricular mass, and physical capacity after replacement with a small-size prosthesis. PATIENTS AND METHODS: A total of 157 patients who underwent valve ...
Grimm Richard A - - 2009
BACKGROUND: Although atrial ventricular (AV) intervals are often optimized at rest in patients receiving cardiac resynchronization therapy (CRT), there are limited data on the impact of exercise on optimal AV interval. METHODS: In 15 patients with CRT, AV intervals were serially programmed while patients were supine and at rest, and ...
Deljanin Ilic Marina - - 2009
AIM: The aim of the present study was to assess the impact of the interval exercise training (IET) vs. steady state exercise training (SSET) on nitric oxide production, through changes of circulating blood markers of endothelial function, including stable end-products of nitric oxide (NOx) and S-nitrosothiols (RSNOs) in patients with ...
Scardovi Angela B - - 2009
To date, the role of CPET (cardiopulmonary exercise testing) for risk stratification in elderly patients with HF (heart failure) with depressed or preserved ventricular function has not been evaluated. In the present study, we analysed whether CPET is useful in predicting outcome in this population. A total of 220 NYHA ...
Ying Michael - - 2009
This study aimed to investigate the association of handedness and position of esophagus with thyroid size asymmetry. One hundred and five healthy subjects were included, and their occurrence of thyroid nodules and position of the esophagus were assessed with ultrasound. Three-dimensional ultrasound was used to measure the volume of the ...
Grewal Jasmine J Division of Cardiovascular Diseases, Mayo Clinic, 200 First St SW, Rochester, MN 55905, - - 2009
Limited information exists regarding the role of left ventricular function in predicting exercise capacity and impact on age- and sex-related differences. To determine the impact of measures of cardiac function assessed by echocardiography on exercise capacity and to determine if these associations are modified by sex or advancing age. Cross-sectional ...
Zhang Xiaorong - - 2009
This article describes a new approach to teaching bioinformatics using Arabidopsis genetic sequences. Several open-ended and inquiry-based laboratory exercises have been designed to help students grasp key concepts and gain practical skills in bioinformatics, using Arabidopsis leucine-rich repeat receptor-like kinase (LRR RLK) genetic sequences. In these exercises, students are asked ...
Weaver Donald J DJ - - 2009
A significant number of children with chronic kidney disease (CKD) have eccentric left ventricular hypertrophy (LVH), suggesting the role of preload overload. Therefore, we hypothesized that increased cardiac output (CO) might be a contributing factor for increased left ventricular mass index (LVMI) in these children. Patients aged 6-20 years with ...
Avanza A C AC - - 2009
High levels of activity of the renin-angiotensin system (RAS) and sympathetic nervous system (SNS) are related to left ventricular hypertrophy (LVH). A percentage of subjects with hyperactivity to treadmill stress test show LVH to echocardiogram. This paper aims at evaluating neurohumoral influence over these subjects by comparing drugs that block ...
Horner Justin M JM Department of Pediatric and Adolescent Medicine, Division of Pediatric Cardiology, Mayo Clinic, Rochester, Minnesota 55905, - - 2008
Long QT syndrome (LQTS) can present with sudden death during exertion. The purpose of this study was to determine the diagnostic importance of exercise-induced ventricular ectopy in the evaluation of LQTS. From 1998 to 2006, 381 patients with a referral diagnosis of LQTS underwent a treadmill exercise stress test. An ...
Wonders Karen Y - - 2008
Numerous methods have been used to minimize the cardiotoxic effects of the chemotherapeutic agent doxorubicin (DOX), and most have had limited success. Chronic endurance exercise has been shown to protect against DOX cardiotoxicity, but little is known regarding the effects of acute exercise on DOX-induced cardiac dysfunction. PURPOSE: The purpose ...
Davy Jean-Marc - - 2008
BACKGROUND: Dronedarone is a new multichannel blocker for atrial fibrillation (AF) previously demonstrated to have both rhythm and rate control properties in paroxysmal and persistent AF. The Efficacy and safety of dRonedArone for The cOntrol of ventricular rate during atrial fibrillation (ERATO) trial assessed the efficacy of dronedarone in the ...
Laskowski R - - 2008
AIM: The aim of this study was to investigate the character of changes in cardiac structure and function among elite judoists due to long-term judo practice. METHODS: A group of male (N = 20, average age: 22.1) and female (N = 15, average age: 19.4) athletes practising judo for about ...
Bhatt T - - 2008
The authors trained 21 participants by using blocked-and-mixed exposure to right-side slips and then caused them to slip unexpectedly on the untrained left side. Authors retested participants with a right slip and a left slip at 1 week, 2 weeks, 1 month, and 4 months. The authors found that preslip ...
Barmeyer A - - 2009
Diastolic dysfunction is frequent in elderly subjects and in patients with left ventricular hypertrophy, vascular disease and diabetes mellitus. Patients with diastolic dysfunction demonstrate a reduced exercise capacity and might suffer from congestive heart failure (CHF). Presence of symptoms of CHF in the setting of a normal systolic function is ...
Raja Asim - - 2008
Advanced interatrial block (aIAB) is considerably much less common than partial interatrial block (pIAB), occuring in <2% of the elderly hospitalized population. Less is, therefore, known of the true clinical burden of aIAB, particularly in relation to graded exercise. Therefore, 12 patients with aIAB and 30 patients with pIAB who ...
Pizzale Stephen - - 2008
Catecholaminergic polymorphic ventricular tachycardia (CPVT) is a familial condition that presents with exercise-induced syncope or sudden death in children or young adults. In most cases the disease is caused by a mutation in the cardiac ryanodine receptor (RyR2) gene. Current evidence suggests that primary therapy for CPVT is beta blockade ...
Lobo T - - 2008
AIM: The aim of this study was to document exercise capacity and serial electrocardiogram and echocardiograph findings in a cohort of Australian patients with Fabry disease, in relation to their history of enzyme replacement therapy (ERT). BACKGROUND: Fabry disease has multifactorial effects on the cardiovascular system. Most previous studies have ...
Silberbauer John - - 2008
OBJECTIVE: Exercise-induced changes in the synchrony of left ventricular contraction may be an important therapeutic target in heart failure. There are limited data to support the feasibility of exercise assessments. In addition, the effect of exercise on synchrony in healthy individuals is undetermined. METHODS: Eleven healthy young men underwent tissue ...
Hydock David S - - 2008
The clinical use of the chemotherapeutic drug doxorubicin (DOX) is limited due to a dose-dependent cardiotoxicity. Evidence is mounting that exercise protects against DOX-related cardiac dysfunction, and as such, it may be possible that prior endurance training promotes defense against DOX cardiotoxicity. PURPOSE: To examine the effects of exercise preconditioning ...
Harper Richard W - - 2009
We report a case of a 32-year-old female world champion triathlete who developed exercise induced recurrent ventricular tachycardia (VT). Investigations supported a diagnosis of the newly recognised condition "exercise induced right ventricular dysplasia/cardiomyopathy" (EIRVD/C). The VT could be easily terminated by burst pacing from the RV apex and the athlete ...
Plehn Gunnar - - 2008
BACKGROUND: Cardiac performance can be characterized in terms of the relative duration of left ventricular systole and diastole. Little is known about exercise-induced abnormalities of the systolic-diastolic phase proportion and its impact on hemodynamic variables in patients with idiopathic dilated cardiomyopathy (IDCM). METHODS: The phases of the cardiac cycle were ...
Fabian Thomas - - 2008
BACKGROUND: Minimally invasive esophagectomy (MIE) is being performed at an increasing number of institutions. The thoracoscopic portion is generally performed in the left lateral decubitus position. Recently there has been increasing interest in esophageal mobilization in the prone position and the potential benefits of this technique with regard to operative ...
Tan Justin Hong-Jie - - 2008
Patients with catecholaminergic polymorphic ventricular tachycardia present at a young age with exercise-induced ventricular arrhythmias (VAs) and may have a positive family history. We describe 8 patients who presented with exercise-induced symptoms as adults, have a negative family history, and responded to beta-blocker therapy. The study evaluated exercise treadmill electrocardiographic ...
Shibata Shigeki - - 2008
Cardiovascular diseases increase with advancing age, associated with left ventricular and arterial stiffening in humans. In contrast, daily exercise training prevents and/or improves both ventricular and arterial stiffening with ageing. We propose a new approach to quantify the dynamics of the Starling mechanism, namely the beat-to-beat modulation of stroke volume ...
Lehtonen J - - 2008
Many offline studies have explored the feasibility of EEG potentials related to single limb movements for a brain-computer interface (BCI) control signal. However, only few functional online single-trial BCI systems have been reported. We investigated whether inexperienced subjects could control a BCI accurately by means of visually-cued left versus right ...
Sakamoto Hideo - - 2008
OBJECTIVES: We evaluated the relationship between varicocele and testicular volume determined by ultrasonography in infertile men. METHODS: This study included 432 age-matched infertile men, 17 fertile men without scrotal abnormalities, and 20 fertile men with left clinical varicocele. The percentage testicular volume difference (%) between the right and left testicles ...
Acarturk Esmeray - - 2008
Our aim was to investigate, in patients with heart failure, the relationship between left atrial size and exercise capacity and cardiovascular events. Seventy-five patients (67 men and 8 women; mean age, 53.4 +/- 8.8 yr) with left ventricular ejection fractions of < or =0.45 (New York Heart Association functional classes ...
Tomazin Katja K University of Ljubljana , Faculty of Sport, - - 2008
The aim of the study was to find whether voluntary induced high- and low-frequency peripheral fatigue exhibit specific alteration in surface EMG signal (SEMG) during evoked and maximum voluntary contractions. Ten male students of physical education performed 60 s long stretch-shortening cycle (SSC) exercise with maximal intensity and 30 s ...
Lewis M J - - 2008
To date there has been no simultaneous characterization of the influence of physical exercise on cardiac ventricular function and cardiac electrical variability. Consequently, little is known about the relationship between the ventricular function and either heart rate (RR) or repolarization (QT) variability. In particular, the relationship between the QT variability ...
Matsumoto, Ryuma
Thesis--University of Tsukuba, D.M.S.(B), no. 332, 1986. 7. 31
de Koning Wilfred B - - 2008
The purpose of this study was to investigate the cardiological health status and health-related quality of life after the arterial switch operation (ASO) for transposition of the great arteries (TGA) in comparison with a normative reference group. Chart review and cross-sectional systematic follow-up, including echocardiography, exercise testing, and electrocardiography, were ...
Lange Angela B - - 2008
Tyrosine hydroxylase-like immunoreactivity is present in cell bodies and processes in the brain and optic lobes of Locusta migratoria, with processes projecting along the frontal connectives to form a neuropile within the frontal ganglion. Immunoreactive cell bodies and processes are also evident in the hypocerebral and ventricular ganglia with processes ...
Haft Jonathan - - 2007
BACKGROUND: Continuous-flow rotary pumps with axial design are increasingly used for left ventricular assist support. The efficacy of this design compared with pulsatile, volume displacement pumps, with respect to characteristics of left ventricular unloading, and exercise performance remains largely unstudied. METHODS AND RESULTS: Thirty-four patients undergoing implantation with a pulsatile, ...
Costa M J - - 2007
Undergraduates with little training on molecular biology may find the technical level of the typical introductory restriction laboratory too challenging and have problems with mastering the underlying concepts and processes. Blackboard electrophoresis is an active learning exercise, which focuses student attention on the sequences and principles of DNA restriction. Students ...
Whyte G - - 2008
A growing body of evidence reporting altered cardiac function and myocardial damage after arduous exercise, together with the increased prevalence of arrhythmias observed in highly trained athletes, suggests that repetitive bouts of prolonged, arduous exercise may be deleterious to long-term cardiac health. We report the case of an experienced, highly ...
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