Search Results
Results 51 - 100 of 1449
1 2 3 4 5 6 7 8 9 10 >
Yeung Joanne P - - 2011
Yeung JP, Human DG, Sandor GGS, De Souza AM, Potts JE. Serial measurements of exercise performance in pediatric heart transplant patients using stress echocardiography. Pediatr Transplantation 2011: 15: 265-271. © 2011 John Wiley & Sons A/S. Abstract:  Heart transplantation is an increasingly acceptable therapeutic option for children with end-stage and ...
Houthuizen Patrick - - 2011
In this review, the physiological rationale for atrioventricular and interventricular delay optimization of cardiac resynchronization therapy is discussed including the influence of exercise and long-term cardiac resynchronization therapy. The broad spectrum of both invasive and non-invasive optimization methods is reviewed with critical appraisal of the literature. Although the spectrum of ...
Coats Andrew J Stewart - - 2011
The volume of literature attesting to the clinical benefits of exercise training in patients with stable chronic heart failure (CHF) is substantial. Training can improve symptoms and exercise capacity, as well as reducing morbidity, mortality, and rates of emergency hospitalization. These benefits are apparent in all patients with stable CHF, ...
Yeh Gloria Y GY Division of General Medicine and Primary Care, Beth Israel Deaconess Medical Center, Brookline, MA 02446, USA. - - 2011
Preliminary evidence suggests that meditative exercise may have benefits for patients with chronic systolic heart failure (HF); this has not been rigorously tested in a large clinical sample. We sought to investigate whether tai chi, as an adjunct to standard care, improves functional capacity and quality of life in patients ...
Holland David J - - 2011
We sought to determine whether pharmacologic interventions changed exercise capacity, diastolic function, and mortality in a meta-analysis of trials in heart failure with preserved ejection fraction. Treatment strategies for heart failure with preserved ejection fraction remain unproven despite several large-scale trials. Trials were included in the systematic review where clear ...
Messias Leandro Rocha - - 2011
BACKGROUND: The exercise treadmill test can be used in ventricular dysfunction patients for functional capacity or predicting prognosis. The cardiac image with 123I MIBG shows cardiac sympathetic activation. OBJECTIVE: To evaluate the relationship between exercise treadmill test variables and cardiac image changes in 123I MIBG. METHODS: 23 patients with LVEF ...
Nie Jinlei - - 2011
PURPOSE:: This study examined the impact of two bouts of prolonged exercise performed on the same day on cardiac biomarkers and left ventricular (LV) function in trained adolescent runners. METHOD:: Twelve male adolescent runners (age 14.5 ±1.5 yr) performed two 45-min constant-load treadmill runs (RUN1 and RUN2), separated by 255 ...
Jimenez Sarah K - - 2011
We have investigated whether acute (swimming) exercise is sufficient to have sustained beneficial effects against cardiac functional decline observed after high-dose isoproterenol administration. Mice were subjected to one bout of swimming for 30 min ("swim" group). Twenty-four hours later, they were given isoproterenol (160 mg/kg) to cause injury. Two control groups were ...
Nishiyama Chika - - 2011
OBJECTIVE: Little is known about triggers of sudden cardiac arrest. This study aimed to analyze the association of the occurrence of out-of-hospital cardiac arrest (OHCA) with patient activities just before the arrest and ambient temperature as one of the major environmental factors. METHODS: This prospective, population-based cohort study enrolled all ...
Nimmerichter Alfred - - 2011
Power output and heart rate were monitored for 11 months in one female ([Vdot]O(2max): 71.5 mL · kg(-1) · min(-1)) and ten male ([Vdot]O(2max): 66.5 ± 7.1 mL · kg(-1) · min(-1)) cyclists using SRM power-meters to quantify power output and heart rate distributions in an attempt to assess exercise intensity and to relate training variables to performance. In total, ...
Stratil Peter - - 2011
AIM OF THE STUDY: The aim of this study was to study exercise-related cardiac arrests on the tennis court and investigate the impact of early initiation of cardiopulmonary resuscitation on survival rate and outcome. METHODS: This study was based on the cardiac arrest registry of the Department of Emergency Medicine ...
Foryst-Ludwig Anna - - 2011
Exercise-induced cardiac hypertrophy has been recently identified to be regulated in a sex-specific manner. In parallel, women exhibit enhanced exercise-mediated lipolysis when compared to men, which might be linked to cardiac responses. The aim of the present study was to assess if previously reported sex-dependent differences in the cardiac hypertrophic ...
Borlaug Barry A - - 2011
Recent studies have examined haemodynamic changes with stressors such as isometric handgrip and rapid atrial pacing in heart failure with preserved ejection fraction (HFpEF), but little is known regarding left ventricular (LV) pressure-volume responses during dynamic exercise. To assess LV haemodynamic responses to dynamic exercise in patients with HFpEF. Twenty ...
Khattar Rajdeep S - - 2011
Aims: To assess the prognostic value of an inconclusive exercise test or inability to exercise in patients with recent onset suspected cardiac chest pain and to determine the independent predictors of events in these patients. Methods: This was an observational follow-up study of patients presenting to a rapid access chest ...
Frese Falko - - 2011
Objectives: To test the reliability of heart rate (HR) recommendations for cardiac rehabilitation training obtained from different treadmill tests. Background: For training in cardiac rehabilitation, HR recommendations are derived from cardio-pulmonary tests. Exercise intensity is often controlled through self-monitoring HR by the cardiac patients. Design: Non-randomized clinical trial. Methods: 25 ...
Tierney Stephanie - - 2011
BACKGROUND: Research has highlighted the benefits of physical activity for people with stable heart failure in improving morbidity and quality of life. However, adherence to exercise among this patient group is low. Barriers and enablers to sustained physical activity for individuals with heart failure have been little investigated. OBJECTIVES: To ...
Tancredi Giancarlo - - 2011
Turner syndrome (TS) is a chromosomal disorder; however, little is known about the exercise tolerance of patients with this syndrome. The aim of the present study was to measure the maximal aerobic capacity and cardiac function using cardiopulmonary exercise testing and lung function tests and to evaluate the cardiac parameters ...
Fumagalli Stefano - - 2011
Studies have suggested that micronutrient deficiency has some role in the progression of chronic heart failure (CHF). Oral supplementation with coenzyme Q(10) (CoQ(10) ) and creatine may reduce mitochondrial dysfunction that contributes to impaired physical performance in CHF. We conducted a randomized, double-blind, placebo-controlled trial to determine the effect of ...
Piepoli Massimo F MF Heart Failure Unit, Cardiac Department, G Da Saliceto Hospital, I-29100 Piacenza, Italy. - - 2011
The European Society of Cardiology heart failure guidelines firmly recommend regular physical activity and structured exercise training (ET), but this recommendation is still poorly implemented in daily clinical practice outside specialized centres and in the real world of heart failure clinics. In reality, exercise intolerance can be successfully tackled by ...
Riezzo I - - 2011
The anabolic-androgenic steroids (AAS) are all synthetic derivates of testosterone and are commonly used as sport performance enhancers in athletes. The heart is one of the organs most frequently affected by administration of anabolic steroids. A direct myocardial injury caused by AAS is supposed to determine marked hypertrophy in myocardial ...
Legaz-Arrese Alejandro - - 2011
We sought to determine the influence of exercise intensity on the release of cardiac troponin I (cTnI) and N-terminal pro-brain natriuretic peptide (NT-proBNP) in amateur marathon runners. Fourteen runners completed three exercise trials of the same duration but at exercise intensities corresponding to: (a) a competitive marathon [mean ± SD: heart rate ...
Scherr Johannes - - 2011
INTRODUCTION: Strenuous exercise induces significant increases in cardiac biomarkers. However, it is still unclear whether this is caused by cardiomyocyte necrosis or secondary mechanisms such as ischemia, cardiac energy deficiency, increased inflammation, or renal dysfunction. METHODS: Therefore, we investigated cardiac biomarkers (hs-cTnT, NT-proBNP, h-FABP), inflammation markers (hs-CRP, IL-6, IL-10, TNF-α) ...
Bonjour Julien - - 2011
The aim of this paper was to develop a model from experimental data allowing a prediction of the cardiopulmonary responses to steady-state submaximal exercise in varying gravitational environments, with acceleration in the G(z) axis (a (g)) ranging from 0 to 3 g. To this aim, we combined data from three different ...
Banks Laura - - 2011
This study sought to determine the influence of age on the left ventricular (LV) response to prolonged exercise (150 min). LV systolic and diastolic performance was assessed using echocardiography (ECHO) before (pre) and 60min following (post) exercise performed at 80% VO(2)max in young (28±4.5 years; n=18; mean±SD) and middle-aged (52±3.9 ...
Zingman Leonid V LV Department of Internal Medicine, University of Iowa, Carver College of Medicine, Iowa City, IA 52242, USA. - - 2011
Physical activity is one of the most important determinants of cardiac function. The ability of the heart to increase delivery of oxygen and metabolic fuels relies on an array of adaptive responses necessary to match bodily demand while avoiding exhaustion of cardiac resources. The ATP-sensitive potassium (K(ATP)) channel has the ...
Jehn Melissa - - 2011
PURPOSE: The purpose of this study was to investigate the association between impairment in heart rate recovery (HR(rec)) after cycle ergometry and prognostic markers in patients with heart failure (HF) compared with healthy controls. METHODS: Fifty patients with chronic HF (systolic HF, N = 30; diastolic HF, N = 20; ...
Tatoulis James - - 2011
James Tatoulis, Lyn Roberts and Anne-Marie Mackintosh argue that the Tick highlights healthier choices.
Kolcz Jacek - - 2011
We focused on neurohumoral activity and its clinical correlates early and late after fenestrated, lateral intra-atrial total cavopulmonary connection (TCPC). Between 2007 and 2010, we prospectively studied 28 early and 48 late postoperative TCPC patients. Plasma concentrations of vasopressin, endothelin-1, proBNP, proANP were determined. We reviewed clinical data to determine ...
Stanton Rosemary A - - 2011
Rosemary Stanton believes that the Heart Foundation Tick program misguides consumers.
Støylen Asbjørn - - 2011
Background: The large randomized controlled multicentre clinical trial, HF-ACTION, recently demonstrated that a programme of recommendation of regular exercise training at moderate intensity is safe, improves quality of life, and reduces the combined endpoint of all-cause death and hospitalization in patients with chronic heart failure. However, the size of beneficial ...
Steinvil Arie - - 2011
The purpose of this study was to determine if pre-participation screening of athletes with a strategy including resting and exercise electrocardiography (ECG) reduces their risk for sudden death. An increasing number of countries mandate pre-participation ECG screening of athletes for the prevention of sudden death. However, the evidence showing that ...
Libonati Joseph R - - 2011
Left ventricular performance is enhanced with chronic exercise training. Alterations in cardiomyocyte β-adrenergic responsiveness (BAR) may, in part, mediate this response. In this study, cardiac BAR and the expression of some key cardiac hypertrophic signaling molecules following 3 months of treadmill training were examined. Four-month old, female, Wistar Kyoto (WKY) rats ...
Lenk Karsten - - 2011
Background: In chronic heart failure (CHF), cardiac cachexia is often associated with the terminal stage of this disease. In animal studies it has been demonstrated that myostatin, a key regulator of skeletal muscle mass, is elevated in advanced stages of this syndrome. Design: The aim of the present study was ...
Scardovi Angela Beatrice - - 2012
The prognostic value of exercise oscillatory breathing (EOB) during cardiopulmonary test (CPX) has been described in young chronic heart failure (HF) patients. We assessed the prognostic role of EOB vs other clinical and ventilatory parameters in elderly HF patients performing a maximal CPX. We prospectively followed-up 370 HF outpatients ≥ ...
Frasier Chad R - - 2011
The ability of exercise to protect the heart against ischemia-reperfusion (I/R) injury is well known in both human epidemiological studies and experimental animal models. In this review article, we describe what is currently known about the ability of exercise to precondition the heart against infarction. Just 1 day of exercise ...
Shearer Jane - - 2011
Substrate imbalance is a well recognized feature of diabetic cardiomyopathy. Insulin resistance effectively limits carbohydrate oxidation, resulting in abnormal cardiac glycogen accumulation. Aims of the present study were to i) characterize the role of glycogen-associated proteins involved in excessive glycogen accumulation in type 2 diabetic hearts and ii) determine if ...
Clark Alexander M - - 2011
Background: Hospital or centre-based cardiac rehabilitation (CR) can lengthen and improve life. However, most existing trials do not examine the effects of design characteristics. To examine the effects of these characteristics, this study compared an individualized cardiac rehabilitation programme to a standardized programme and examined what factors contributed most to ...
Hydock David S - - 2011
Acute doxorubicin (DOX) cardiotoxicity can be attenuated by exercise preconditioning, but little is known of whether this cardioprotection continues beyond 10 days post-DOX administration. The purpose of this study was to determine the effects of exercise preconditioning on early chronic DOX-induced cardiotoxicity. Male rats were randomly assigned to sedentary, treadmill, ...
Karsten Marlus - - 2012
The response to moderate exercise at altitude in heart failure (HF) is unknown. We evaluated 30 HF patients, (NYHA I-III, 25 M/5 F; 59 ± 10 years; LVEF = 39.6 ± 7.1%), in stable clinical conditions, treated with carvedilol at the maximal tolerated dose. We performed a maximal cardiopulmonary exercise test (CPET) with ramp protocol at sea level ...
Goldberg David J DJ Division of Cardiology, The Children's Hospital of Philadelphia, 34th and Civic Center Blvd, Philadelphia, PA 19104, - - 2011
Children and young adults with single-ventricle physiology have abnormal exercise capacity after the Fontan operation. A medication capable of decreasing pulmonary vascular resistance should allow improved cardiac filling and improved exercise capacity. This study was a double-blind, placebo-controlled, crossover trial conducted in children and young adults after Fontan. Subjects were ...
Sweet Shane N - - 2011
BACKGROUND: Few studies have explored exercise and motivational patterns of cardiac rehabilitation patients in the long term. PURPOSE: We explored differential patterns of exercise and motivation in cardiac rehabilitation patients over a 24-month period and examined the relationship between these emerging patterns. METHODS: Participants (n = 251) completed an exercise, barrier self-efficacy, ...
Beckers Paul J - - 2011
Aim: To verify the impact of testing mode on maximal, sub-maximal parameters and on cardiopulmonary exercise test (CPET) derived prognostic markers in patients with chronic heart failure (CHF). Method: 55 patients (age 60.3 years ±11.1) with CHF (ejection fraction 26 %±8) underwent a maximal CPET on a bicycle and on ...
Chantler Paul D - - 2011
The coupling between arterial elastance (E(A); net afterload) and left ventricular elastance (E(LV); pump performance), known as E(A)/E(LV), is a key determinant of cardiovascular performance and shifts during exercise due to a greater increase in E(LV) versus E(A). This normal exercise-induced reduction in E(A)/E(LV) decreases with advancing age. We hypothesized ...
Rosic G - - 2011
In this study we performed laboratory treadmill protocols of increasing load. Heart rate was continuously recorded and blood lactate concentration was measured for determination of lactate threshold by means of LTD-max and LT4.0 methods.Our results indicate that the shape of heart rate performance curve (HRPC) during incremental testing depends on ...
Squara P - - 2011
The aim of the present study was to investigate the hormonal status and hemodynamic performance of a sheep model of congestive heart failure at rest and during maximum exercise. The current investigation was a prospective, experimental study and was carried out in an experimental laboratory. Animals were randomly assigned to ...
Daullxhiu Irfan - - 2011
Heart failure is a major and growing societal problem characterized by high mortality, frequent hospitalization, reduced quality of life and a complex therapeutic regimen. The six-minute walking test (6-MWT) may serve as a useful and reproducible test for assessing exercise capacity in heart failure patients and has been suggested as ...
Manzoni Gian Mauro - - 2011
Given that many patients referred to cardiac rehabilitation (CR) are obese, diet therapy, exercise training, nutritional and psychological counselling for both obesity and psychological distress should be included as important components in all CR programmes. In this practice-level, observational study we evaluated the short-term within-group effects of a four-week multi-factorial ...
Devlin Maureen J - - 2011
Patterns of variation in bone size and shape provide crucial data for reconstructing hominin paleobiology, including ecogeographic adaptation, life history, and functional morphology. Measures of bone strength, including robusticity (diaphyseal thickness relative to length) and cross-sectional geometric properties such as moments of area, are particularly useful for inferring behavior because ...
Zanettini Renzo - - 2011
Background: Exercise prescription based on percentage of peak exercise variables has many limitations in patients taking beta-blockers. The aim of this study was to evaluate efficacy and safety of a training protocol based on the rating of perceived exercise (RPE) in patients taking beta-blockers after cardiac surgical revascularization. Design and ...
Laukkanen Jari A - - 2011
Abstract Exercise testing is not limited to observation of ischemic electrocardiographic findings during exercise, but also abnormal findings in blood pressure, heart rate, and exercise capacity are valuable. Individuals with exaggerated exercise blood pressure tend to develop future hypertension. Extensive elevation in systolic blood pressure during exercise has been found ...
1 2 3 4 5 6 7 8 9 10 >