Purpose: Patients at risk for sudden cardiac death may temporarily need a wearable cardioverter-defibrillator (WCD). Exercise-based cardiac rehabilitation (CR) has a class I recommendation in patients with cardiac disease. The aim of this study was to evaluate the safety and feasibility of undergoing CR with a WCD.
View Article and Find Full Text PDFThe goal of this study is to evaluate the response of physiological variables to acute normobaric hypoxia compared to normoxia and its influence on the lactate turn point determination according to the three-phase model of energy supply (Phase I: metabolically balanced at muscular level; Phase II: metabolically balanced at systemic level; Phase III: not metabolically balanced) during maximal incremental exercise. Ten physically active (VO2max 3.9 [0.
View Article and Find Full Text PDFBackground: Symptoms of a post-traumatic stress disorder can follow Tako-tsubo cardiomyopathy. This vignette describes such a linkage and exemplifies the risk that these symptoms may remain undetected.
Case Presentation: After a skiing accident that had evoked existential fear of suffocation, a post-menopausal woman was diagnosed with Tako-tsubo syndrome and myocardial contusion.
Aim: Our Working Group on Out-Patient Cardiac Rehabilitation (AGAKAR) has previously published guidelines, which were endorsed by the Austrian Society of Cardiology. It was the aim of this study to assess the short-term (phase II) and long-term (phase III) effects of these guidelines by use of a nationwide registry.
Methods: All Austrian out-patient rehabilitation facilities entered data into a database of all consecutive patients who completed phase II (4-6 weeks) and/or III (6-12 months) rehabilitation between 1.
Purpose: This study aimed to evaluate cardiorespiratory and hemodynamic responses during 24 h of continuous cycle ergometry in ultraendurance athletes.
Methods: Eight males (mean ± SD; age = 39 ± 8 yr, height = 179 ± 7 cm, body weight [Wt] = 77.1 ± 6.
Background: The Indian plant root Salacia reticulata, which is rich in alpha-glucosidase inhibitors, is used for metabolic disorders in Ayurvedic medicine. Vitamin D₃ is also used in the treatment of some metabolic diseases. Our goal was to determine its potential effect for humans with obesity.
View Article and Find Full Text PDFPhysical training is part of the recommendations for prevention and rehabilitation of cardiovascular and metabolic diseases. The main focus was on endurance training for a long time. However, a positive effect of strength training has also been found for patients with with a wide spectrum of diseases.
View Article and Find Full Text PDFThe aim of the study was to investigate the independent relationship between maximal lactate steady state (MLSS), blood lactate concentration [La] and exercise performance as reported frequently. Sixty-two subjects with a wide range of endurance performance (MLSS power output 199 ± 55 W; range: 100-302 W) were tested on an electronically braked cycle ergometer. One-min incremental exercise tests were conducted to determine maximal variables as well as the respiratory compensation point (RCP) and the second lactate turn point (LTP2).
View Article and Find Full Text PDFEur J Cardiovasc Prev Rehabil
December 2011
Background: Initiation of a long-term improvement of cardiac risk factors is one of the major aims of a cardiac rehabilitation/secondary prevention programme.
Methods And Participants: The Health Guide collected data in terms of cardiac risk factors: blood pressure, resting pulse, total cholesterol, LDL cholesterol, body weight, physical activity and number of cigarettes at admission and discharge after a stationary rehabilitation programme and every 3 months. After 12 months the Health Guides were returned.
Health Qual Life Outcomes
December 2009
Background: The goal of cardiac rehabilitation programs is not only to prolong life but also to improve physical functioning, symptoms, well-being, and health-related quality of life (HRQL). The aim of this study was to document the long-term effect of a 1-month inpatient cardiac rehabilitation intervention on HRQL in Austria.
Methods: Patients (N = 487, 64.
Purpose: The aim of this study was to assess the effects on exercise performance of supplementing a standard cardiac rehabilitation program with additional exercise programming compared to the standard cardiac rehabilitation program alone in elderly patients after heart surgery.
Methods: In this prospective, randomized controlled trial, 60 patients (32 men and 28 women, mean age 73.1 +/- 4.
Eur J Cardiovasc Prev Rehabil
December 2008
Determination of an 'anaerobic threshold' plays an important role in the appreciation of an incremental cardiopulmonary exercise test and describes prominent changes of blood lactate accumulation with increasing workload. Two lactate thresholds are discerned during cardiopulmonary exercise testing and used for physical fitness estimation or training prescription. A multitude of different terms are, however, found in the literature describing the two thresholds.
View Article and Find Full Text PDFWhat Is Already Known About This Subject: Exercise is known to affect absorption of other inhaled substances, but so far there are no reports on the effect of exercise on the absorption of inhaled insulin in humans.
What This Paper Adds: This report is the first to investigate the effect of exercise on the absorption of inhaled insulin. In this study in healthy volunteers we found that exercise early after dosing increased absorption (15-20%) of inhaled insulin over the first 2 h after start of exercise, with an approximately 30% increase in maximal insulin concentration, and unchanged overall absorption.
Objective: This study investigated the effect of moderate exercise on the absorption of inhaled insulin via the AERx insulin diabetes management system (iDMS).
Research Design And Methods: In this randomized, open-label, four-period, crossover, glucose clamp study 23 nonsmoking subjects with type 1 diabetes received a dose of 0.19 units/kg inhaled human insulin followed in random order by either 1) no exercise (NOEX group) or 30 min exercise starting, 2) 30 min after dosing (EX30), 3) 120 min after dosing (EX120), or 4) 240 min after dosing (EX240).
Purpose: Numerous investigations have reported changes in metabolic and cardiorespiratory responses associated with the menstrual cycle. We examined whether variables commonly used in exercise testing are influenced by menstrual cycle phases.
Methods: Nineteen eumenorrheic women performed two incremental tests to voluntary exhaustion on a cycle ergometer during two different phases of the menstrual cycle: the follicular phase (FP) and the luteal phase (LP).
Objective: Although alpha-blockers are effective in lowering blood pressure, they may increase heart rate, an unwanted effect that could negatively affect outcome. However, the alpha-blocker urapidil might not increase heart rate due to its additional effect on 5-HT1A receptors. Therefore, we compared the effects of urapidil on heart rate with those of another alpha-blocker, doxazosin.
View Article and Find Full Text PDFPurpose: The deflection of the HR performance curve (HRPC) has been described as an objective marker of submaximal exercise performance. HR response to incremental cycle ergometer exercise is shown to be neither linear nor uniform and a physiological explanation of the deflection phenomenon is lacking. We hypothesized that differences in the beta1-adrenoceptor site are the source of these differences.
View Article and Find Full Text PDFBackground: Right heart haemodynamic parameters can be recorded continuously with the help of an implanted haemodynamic monitor. Aim of the study was to assess the haemodynamic response with and without inhalation of iloprost during cardiopulmonary exercise testing (CPET) in patients with pulmonary hypertension.
Materials And Methods: Five female patients with documented pulmonary hypertension (mean +/- S.
Two female patients with pulmonary arterial hypertension and a permanently implanted hemodynamic monitor changed treatment from inhaled iloprost to oral bosentan. The hemodynamic changes were seen very early after the first dose of bosentan and there was no need to re-establish inhaled iloprost.
View Article and Find Full Text PDFStudy Objectives: Patients with chronic heart failure and implanted cardioverter-defibrillators (ICDs) may have a higher incidence of new-onset or worsening heart failure requiring hospitalization with dual-chamber ICDs compared with single-chamber ICDs.
Design And Setting: The purpose of this study was to show the impact of permanent right ventricular (RV) pacing on exercise capacity and related cardiorespiratory parameters in patients with chronic heart failure and ICDs.
Patients And Interventions: Seventeen patients with chronic heart failure and a dual-chamber ICD performed cardiopulmonary exercise testing (CPX) on 3 different days.
The clinical role of magnetic resonance in diseases of the heart and great vessels is rapidly evolving. Cardiovascular magnetic resonance (CMR) has become an established non-invasive imaging modality for the assessment of various cardiac disorders, such as congenital heart disease, cardiac masses, cardiomyopathies, aortic and pericardial diseases. Moreover, due to its accuracy and reproducibility, CMR is currently considered the gold standard for quantification of ventricular volumes, function, and mass.
View Article and Find Full Text PDFBackground: A recommended component of heart transplant recipients (HTR) is endurance-oriented exercise therapy. However, the trainability of HTR after transplantation is vague. We examined the effect of high-volume and -intensity exercise training on exercise performance in HTR, compared with HTR undergoing regular rehabilitation training, and sedentary healthy subjects (SHS).
View Article and Find Full Text PDFBackground: Treatment of chronic heart failure is based on the results of large clinical trials, which form the basis of treatment guidelines, such as those from the European Society of Cardiology (ESC). The aim of this study was to record treatment-modalities and the implementation of guidelines of chronic heart failure in clinical practice in Austria.
Methods: Overall 96 general physicians, specialists for internal medicine in private practice or in hospital outpatient departments participated in the survey.
Eur J Cardiovasc Prev Rehabil
August 2003
Background: Exercise is recommended for cardiac patients irrespective of beta-blockers. Percentages of maximal heart rate (%HRmax) and heart rate reserve (%HRR) are widely used to determine training intensities. The purpose of this study was to investigate the influence of chronic cardioselective beta blockade on the %HRmax and %HRR model.
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