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Results 251 - 300 of 1542
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Ntsinjana Hopewell N - - 2013
Aortic arch geometry is linked to abnormal blood pressure (BP) response to maximum exercise. This study aims to quantitatively assess whether aortic arch geometry plays a role in blood pressure (BP) response to exercise. 60 age- and BSA-matched subjects -- 20 post-aortic coarctation (CoA) repair, 20 transposition of great arteries ...
Askew Christopher D - - 2013
Peripheral arterial disease (PAD) is characterised by atherosclerotic stenosis or occlusion of the arteries of the lower limbs, resulting in an impairment of blood flow to the legs. Patients with PAD have a significant reduction in their physical capacity and are limited during activities such as walking by intermittent claudication. ...
Okamoto Takanobu - - 2013
Although acute high-intensity resistance exercise to exhaustion decreases arterial compliance and increases arterial stiffness, the effect of low-intensity resistance exercise (LRE) to exhaustion on arterial compliance and stiffness remains unknown. The present study investigated the acute effects of LRE on arterial compliance and stiffness. Ten healthy individuals (age 26 ± 5 years) performed ...
Stöhr Eric Jean - - 2013
Although the human left ventricle (LV) operates as a functional syncytium and previous studies have reported a single value for LV stroke work at rest, more intricate plasticity of regional LV energetics may be required during enhanced cardiovascular demand. We compared kinetic energy of the LV base and apex, respectively, ...
Watanabe Kazuhito - - 2013
We tested the hypotheses that, in humans, changes in cardiac output (CO) and total peripheral vascular resistance (TPR) occurring in response to isometric handgrip exercise vary considerably among individuals, and that those individual differences are related to differences in muscle metaboreflex and arterial baroreflex function. Thirty-nine healthy subjects performed a ...
Halliwill John R - - 2013
Syncope which occurs suddenly in the setting of recovery from exercise, known as post-exercise syncope, represents a failure of integrative physiology during recovery from exercise. We estimate that between 50 and 80 % of healthy individuals will develop pre-syncopal signs and symptoms if subjected to a 15-min head-up tilt following exercise. ...
Martin Wade H WH 3rd Department of Internal Medicine, Division of Cardiology, St Louis Veterans Administration Medical Center and Washington University School of Medicine, St Louis, MO. Electronic address: - - 2014
Treadmill exercise variables are powerful predictors of all-cause mortality but are unobtainable in at least 50% of patients because of disabilities precluding lower extremity exercise. Arm exercise stress testing is a potentially cost-effective alternative, but no long-term outcome data are available. We performed arm ergometer stress tests on 446 veterans ...
Collins Eileen G - - 2013
Breathing-retraining and helium-oxygen (heliox) have been used to improve exercise tolerance in COPD. We hypothesized that, in patients with COPD, exercise duration after exercise-training plus breathing-retraining and oxygen would be longer than after exercise-training plus heliox or after exercise-training plus oxygen alone. We also explored the short-term maintenance of gains ...
Bassilios Bridget - - 2013
Our aim was to assess physical activity, attitudes and future intentions among a sample of individuals with schizophrenia spectrum disorders (SSDs). A cross-sectional interview was conducted with a convenience sample of 49 adults with SSDs and in receipt of community mental health services. Interview questions elicited information about exercise behaviour ...
Madison Guy - - 2013
To assess the physical and psychological effects across 11 weeks of music-exercise sessions, the participants' training experience, and attitudes towards physical activity. The effect of different music information was also investigated. Overall, 146 sedentary volunteers were randomized into 4 exercise groups and each group received different music information. Physical capacity ...
Yoo Won-Gyu WG Department of Physical Therapy, College of Biomedical Science and Engineering, Inje University and Elderly Life Redesign Institute, Republic of - - 2013
[Purpose] The purpose of this study was to investigate the effect of thoracic stretching, a thoracic extension exercise and exercises for cervical and scapular posture on thoracic kyphosis angle and upper thoracic pain. [Subject] A 36-year-old male, who complained of upper thoracic pain at the T1-4 level with forward head ...
Nunes Rafael Amorim Belo - - 2013
Background: The beneficial effects of exercise on cardiovascular health may be related to the improvement in several physiologic pathways, including peripheral vascular function. The aim of this study was to evaluate the relationship between cardiovascular responses during the treadmill exercise test and exercise-induced muscle vasodilatation in individuals without overt heart ...
Zhu Li-Xia - - 2013
Regular exercise has been shown to be beneficial to patients with heart disease. Previous studies have indicated that health education can effectively increase participants' physical activity. However, no systematic review was conducted to evaluate the effectiveness of health education programs on changing exercise behavior among patients with heart disease. The ...
Webber Bryant J - - 2013
Syncope is a common event with many possible etiologies, ranging from benign to severe. Syncopal episodes of any origin, however, may result in traumatic injury due to postural collapse. Based on the prevalence of internal and external stressors during training, basic military trainees may be at increased risk for syncope. ...
Tutarel Oktay - - 2013
Exercise training is beneficial in healthy adults as well as patients with acquired cardiovascular disease such as coronary artery disease and heart failure. While a reduced exercise capacity is common in adults with congenital heart disease, it is not clear if these patients stand to benefit from exercise training or ...
Yan Huimin - - 2013
African American (AA) men have higher arterial stiffness and augmentation index (AIx) than Caucasian (CA) men. Women have greater age-associated increases in arterial stiffness and augmentation index (AIx) than men. This study examined racial and sex differences in arterial stiffness and central hemodynamics at rest and following an acute bout ...
da Silva Vinicius Z Maldaner - - 2013
Noninvasive ventilation may improve cardiovascular function and exercise performance. We evaluated the physiologic impact of noninvasive ventilation during isokinetic knee extension resistance exercise in patients with heart failure. This clinical trial included 10 male compensated patients with ischemic heart failure (age, 57 ± 9.1 years; ejection fraction, 28.5 ± 5.8%). ...
Millar Philip J - - 2013
Hypertension, or the chronic elevation in resting arterial blood pressure (BP), is a significant risk factor for cardiovascular disease and estimated to affect ~1 billion adults worldwide. The goals of treatment are to lower BP through lifestyle modifications (smoking cessation, weight loss, exercise training, healthy eating and reduced sodium intake), and ...
Olson Thomas P - - 2013
Background: Heart failure (HF) patients develop ventilatory abnormalities at rest and during exercise although the mechanism(s) underlying these abnormalities remain unclear. We examined whether inhibiting afferent neural feedback from locomotor muscles during exercise reduces exercise ventilation in HF patients. Methods: In a randomized, placebo controlled design, 9 HF patients (age=60±6 ...
Lampropoulou Sofia I - - 2013
The way psychometric and neurophysiological measurements of fatigue are connected is not well understood. Thus, the time course of perceived effort changes due to fatigue, as well as the peripheral and central neurophysiological changes accompanying fatigue, were evaluated. Twelve healthy participants (35±9 years old) undertook 10 minute intermittent isometric fatiguing ...
Greaney Jody L - - 2013
The neurocirculatory responses to exercise are exaggerated in hypertension, increasing cardiovascular risk, yet the mechanisms remain incompletely understood. The aim of this study was to examine the in vitro effectiveness of pyridoxal-5-phosphate as a purinergic (P2) receptor antagonist in isolated murine dorsal root ganglia (DRG) neurons and the in vivo ...
de Beer Vincent J - - 2013
Hypercholesterolemia impairs endothelial function (e.g. the NO- cGMP-phosphodiesterase 5 (PDE5) pathway), limits shear stress induced vasodilation, and is therefore expected to reduce exercise-induced vasodilation. To assess the actual effects of hypercholesterolemia on endothelial function and exercise-induced vasodilation, we compared the effects of eNOS and PDE5 inhibition in chronically instrumented Yucatan ...
Coppini R - - 2013
In patients with long QT 1 syndrome, prolongation of action potential duration (APD) due to reduced IKs is associated with QTc prolongation in response to both epinephrine and exercise. We recently showed that ventricular myocytes from patients with hypertrophic cardiomyopathy (HCM) have markedly prolonged APD associated with downregulation of IKs. ...
Wasserman Karlman K Division of Respiratory and Critical Care, Physiology and Medicine, Los Angeles Biomedical Research Institute, Harbor-UCLA Medical Center, David Geffen School of Medicine, University of California at Los Angeles, Torrance, CA 90502, United States. Electronic address: - - 2014
We hypothesized that exercise ventilation and arterial H(+) ([H(+)]a) are mutually interactive, [H(+)]a stimulating VE and VE regulating [H(+)]a increase. Fifty-five patients were studied, 10 normal and 45 with cardio-respiratory disorders. Each patient underwent cardiopulmonary exercise testing with simultaneous serial arterial blood gas and pH measurements. Subsequently, they were classified ...
Liu Qing - - 2013
Pulse transit time (PTT) is a cardiovascular parameter of emerging interest due to its potential to estimate blood pressure (BP) continuously and without a cuff. Both linear and non-linear equations have been used in the estimation of BP based on PTT. This study, however, demonstrates that there is a hysteresis ...
Madden Kenneth M - - 2013
Vasodepressive carotid sinus hypersensitivity (V-CSH) is a common but incurable etiology for fainting in older adults with diabetes (OADM), and is diagnosed by carotid sinus massage (CSM). Aerobic exercise has been shown to be an effective therapy for other neuroautonomic etiologies of syncope (such as orthostatic hypotension), but the effectiveness ...
Oliveira Norton Luis - - 2013
The purpose of this state-of-the-art review was to examine the effects of exercise training on arterial stiffness (AS) in patients with coronary artery disease (CAD). A PubMed and SCOPUS literature search was conducted up to March of 2013. Two authors performed the selection of the studies and the subsequent data ...
Cho Jae Sung - - 2013
Abstract Introduction: The DV-Trainer™ (a virtual reality [VR] simulator) (Mimic Technologies, Inc., Seattle, WA) is one of several different robotic surgical training methods. We designed a prospective study to determine whether VR training could improve da Vinci(®) Surgical System (Intuitive Surgical, Inc., Sunnyvale, CA) performance. Subjects and Methods: Surgeons (n=12) ...
Mihaescu Adelina - - 2013
Background: End-stage renal disease patients can be considered as 'cardiovascular time bombs' due to their tremendous cardiovascular risk. Our study has determined the impact of 3 months of exercise training during dialysis on some of the cardiovascular risk factors (arterial stiffness, body composition and physical performance) in a chronic hemodialyzed ...
Anjak Ahmad - - 2013
A growing body of evidence seems to suggest that reduction in right ventricular (RV) systolic function is not only associated with both development of symptoms associated with pulmonary arterial hypertension (PAH) but also increased morbidity and adverse clinical outcomes. Recent data suggest that supine bicycle stress echocardiography (sBEE) is feasible ...
Wittlieb-Weber Carol A - - 2013
Children with heart disease are at risk for sudden death during exercise, yet decisions regarding sports participation are often based on resting data. Acceleration across the left ventricular outflow tract (LVOT) assessed on stress echocardiography may suggest a diagnosis of hypertrophic cardiomyopathy in patients in whom it is not otherwise ...
Ciolac E G - - 2013
The aim of the present study was to analyze the effects of age on cardiorespiratory fitness (CRF), muscle strength and heart rate (HR) response to exercise adaptation in women in response to a long-term twice-weekly combined aerobic and resistance exercise program. 85 sedentary women, divided into young (YG; n=22, 30.3±6.2 ...
Goumon S - - 2013
The process of transportation can be seen as a succession of stressors, from which pigs may not have time to recover before slaughter. The aim of this study was to determine the extent to which the duration of the rest time given to near-market weight pigs after an initial exposure ...
Huffman Jeff C - - 2013
The objective was to assess the feasibility and acceptability of nine positive psychology exercises delivered to patients hospitalized for suicidal thoughts or behaviors, and to secondarily explore the relative impact of the exercises. Participants admitted to a psychiatric unit for suicidal ideation or behavior completed daily positive psychology exercises while ...
Oh Shin J - - 2013
To study post-exercise exhaustion by decrement (PEE-D) systematically in 24 repetitive nerve stimulation (RNS) tests in 14 patients with Lambert-Eaton myasthenic syndrome (LEMS). In the abductor digiti quinti muscle, the compound muscle action potential (CMAP) amplitude and 3Hz responses for 2s were obtained with the supramaximal stimulation at rest, immediately ...
Berdowski Jocelyn - - 2013
Although regular physical activity has beneficial cardiovascular effects, exercise can trigger an acute cardiac event. We aimed to determine the incidence and prognosis of exercise-related out-of-hospital cardiac arrest (OHCA) in the general population. We prospectively collected all OHCAs in persons aged 10-90 years from January 2006 to January 2009 in ...
Gegentonglaga - - 2013
One of the events in brain is an increasing cerebral blood flow during exercise. The tissue oxygen level may be increased, because blood flow correlates with tissue oxygen level. However, it is little known whether the tissue oxygen pressure in hippocampal region (Hip-pO2) will be affected by exercise. the aim ...
Son Sung Min SM Department of Physical Therapy, College of Rehabilitation Science, Daegu University, Republic of - - 2013
[Purpose] The purpose of the current study was to investigate the changes in one-legged standing balance of the ipsilateral lower limb following unilateral isokinetic strength training. [Subjects and Methods] Thirty healthy adult volunteers were randomly assigned to either a training group or a control group, so that each group included ...
Tempest Gavin - - 2013
Imagery, as a cognitive strategy, can improve affective responses during moderate-intensity exercise. The effects of imagery at higher intensities of exercise have not been examined. Further, the effect of imagery use and activity in the frontal cortex during exercise is unknown. Using a crossover design (imagery and control), activity of ...
Akyuz Aydın A Department of Cardiology, Namık Kemal University Medical School, Tekirdag, - - 2013
The relationship between QT prolongation and myocardial ischemia is widely known. Due to the limited value of ST depression, we aimed to evaluate, by using four simpler heart rate corrections (Bazett, Framingham, Fridericia and Hodges), the value of maximal exercise-QTc prolongation in the diagnosis of coronary artery disease (CAD) presence ...
Tift Michael S - - 2013
Investigation into the development of oxygen storage capacity in air-breathing marine predators has been performed, but little is known about the development of regulatory factors that influence oxygen utilization. Strategies for efficiently using oxygen stores should enable marine predators to optimize time spent foraging underwater.We describe the developmental patterns of ...
Kane Irene - - 2013
Self-efficacy and enjoyment were examined among 34 middle school children (M age = 12.5 yr.) performing the Progressive Aerobic Cardiovascular Endurance Run (PACER). Exercise self-efficacy (running) and physical activity enjoyment were measured after viewing a video illustrating the PACER, and subsequently following a PACER test. Significantly greater pre- than post-exercise ...
Lacewell Alisha N - - 2013
Altered systemic hemodynamics following exercise can compromise cerebral perfusion and result in syncope. As the Wingate anaerobic test often induces pre-syncope, we hypothesized that a modified Wingate test could form the basis of a novel model for the study of post-exercise syncope and a test-bed for potential countermeasures. Along these ...
Ye Xin - - 2013
The purpose of this study was to examine the strength and electromyographic (EMG) responses in exercised and non-exercised limbs following concentric vs. eccentric exercise of the forearm flexors. Twenty five men (mean ± SD age = 23.6 ± 3.8 years; height = 179.7 ± 6.6 cm; body weight = 87.4 ...
Vaegter Henrik Bjarke - - 2013
Pain inhibitory mechanisms are often assessed by paradigms of exercise-induced hypoalgesia (EIH) and conditioned pain modulation (CPM). In this study it was hypothesised that the spatial and temporal manifestations of EIH and CPM were comparable. Eighty healthy subjects (40 females), between 18-65 years participated in this randomized repeated-measures crossover trial ...
Jeppesen Peter - - 2013
Introduction: Diabetic retinopathy is accompanied by disturbances in retinal blood flow which is assumed to be related to the diabetic metabolic dysregulation. It has previously been shown that normoinsulinemic hyperglycemia has no effect on the diameter of retinal arterioles at rest and during an increase in the arterial blood pressure ...
Cote Anita T - - 2013
High-intensity exercise induces marked physiological stress affecting the secretion of catecholamines. Sustained elevations in catecholamines are thought to desensitize cardiac beta receptors, and may be a possible mechanism in impaired cardiac function following strenuous exercise. In addition, attenuated arterial-ventricular coupling may identify vascular mechanisms in connection with post-exercise attenuations in ...
Greene Nicholas P - - 2013
Endurance exercise may reduce blood pressure and improve vasodilatory capacity thereby blunting the hypertensive response to stress. Therefore we sought to test the efficacy of a novel model of low-impact endurance training, the aquatic treadmill (ATM), to improve blood pressure (BP) parameters. Sixty sedentary adults were randomized to 12-weeks of ...
Wages Nathan P - - 2013
Musculoskeletal disorders are some of the most commonly occurring chronic conditions affecting the US population, with the most self-reported and diagnosed disorder being low back pain. Low back pain is often due to suboptimal back muscle function, at least in part, as a result of muscle inactivity and disuse. Resistance ...
Feger Bryan J - - 2013
The myocardial Na(+)/H(+) exchanger-1 (NHE1) plays a major role in regulation of intracellular pH and its upregulation has been implicated in increased ischemia-reperfusion injury and other pathologies. Hydrogen peroxide (H2O2) increases NHE1 activity acutely via ERK1/2 signaling. Chronic strenuous exercise upregulates NHE1 in skeletal muscle, but we hypothesize this will ...
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