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Results 251 - 300 of 1525
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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%). ...
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 ...
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. ...
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 ...
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 ...
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 ...
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 ...
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 ...
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 ...
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) ...
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 ...
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 ...
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 ...
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 ...
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 ...
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 ...
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 ...
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 ...
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 ...
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 ...
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 ...
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 ...
Dominelli Paolo B PB a School of Kinesiology, University of British Columbia, Vancouver, BC V6T 1Z3, - - 2014
Exercise-induced arterial hypoxemia (EIAH) occurs in some healthy humans at sea-level, whereby the most aerobically trained individuals develop the most severe hypoxemia. A female competitive runner completed 2 maximal exercise tests. Maximal oxygen consumption increased by 15% between testing days, but the degree of hypoxemia remained similar (PaO2, SaO2; 82 ...
Gagnon Dominique D DD a Department of Biology of Physical Activity, P.O: Box 35, University of Jyväskylä, Jyväskylä FI-40014, - - 2014
Exercise and shivering rely on different metabolic pathways and consequently, fuel selection. The present study examined the effects of a pre-exercise low-intensity shivering protocol on fuel selection during submaximal exercise in a cold environment. Nine male subjects exercised 4 times for 60 min at 50% (LOW) or 70% (MOD) of ...
Nardone Raffaele - - 2013
To further investigate the mechanisms of exercise-induced cortical plasticity after spinal cord injury (SCI), the cortical silent period (CoSP) evoked by transcranial magnetic stimulation (TMS) during a fatiguing muscle contraction was evaluated in 5 patients with incomplete cervical SCI and in 5 healthy subjects. The physiological lengthening of CoSP end ...
Smith Andrew M - - 2013
Increases in performance on tests of attention and learning are often observed shortly after a period of aerobic exercise, and evidence suggests that humans who engage in regular exercise are partially protected from age-related cognitive decline. However, the cognitive benefits of exercise are typically short-lived, limiting the practical application of ...
Dawes Helen - - 2013
. Fatigue is a chronic symptom for people with multiple sclerosis (PwMS). . Symptoms of fatigue were investigated during and following a single exercise session. In all, 58 PwMS and 15 healthy, low-active controls performed a cycle ergometer incremental exercise test to voluntary exhaustion. Physiological intensity (expired air and heart ...
Giannaki Christoforos D - - 2013
Restless Legs Syndrome is very common in hemodialysis patients however there are no comparative studies assessing the effectiveness of a non-pharmacological treatment to a classical treatment on parameters related to syndromes' severity and quality of life. In this randomized, partially double blind, placebo controlled trial, thirty two hemodialysis patients with ...
Ho Jeffrey D - - 2013
Both profound acidosis and catecholamine excess have been proposed as underlying physiologic derangements in subjects at high risk for arrest related death (ARD). In this study, the objective was to determine a level of physical exertion that is "equivalent" in terms of levels of acidosis and catecholamines to a "standard" ...
Kaya Mehmet G - - 2013
This study evaluated the heart rate recovery response in ankylosing spondylitis (AS) patients and control subjects. Delayed heart rate recovery after exercise reflects AD and independently predicts adverse cardiac outcome. Fifty-one patients with AS and 50 age- and matched controls received electrocardiography, echocardiography, and treadmill exercise testing. The heart rate ...
Tanaka Hiroaki - - 2013
Background: The double product (DP) breakpoint of heart rate (HR) and systolic blood pressure has been identified as coincident with anaerobic threshold (AT), but there are no simple methods for measuring cardiac metabolic stress (CMS) during an exercise test. It was hypothesized that the DP of HR and the amplitude of ...
Kim Kyun Hee - - 2013
A 30-year-old female patient with known hypertrophic cardiomyopathy (HCMP) was admitted for recurrent syncope episodes. Electrocardiogram (ECG) showed 2 : 1 atrioventricular (AV) block. Stress echocardiography with bicycle showed high grade AV block at high stage of the exercise associated with exercise intolerance and dyspnea. Twenty-four hour ECG monitoring also ...
Mattlage Anna E AE University of Kansas Medical Center, Dept of Physical Therapy and Rehabilitation Science, Kansas City, - - 2013
Reduced cardiovascular fitness post-stroke may negatively impact recovery. There is little information regarding exercise testing performance and cardiorespiratory response to an aerobic exercise intervention in subacute stroke. The purpose of this study was to examine cardiorespiratory response in subacute stroke after an 8-week aerobic exercise intervention using a total body ...
Jung Taeyou - - 2013
This study aimed to compare the cardiorespiratory responses between aquatic treadmill walking (ATW) and overground treadmill walking (OTW) in people with hemiparesis post-stroke. Eight participants post-stroke aged 58.5 ± 11.4 years and eight healthy adult controls aged 56.1 ± 8.6 years participated in a cross-sectional comparative study. Participants completed three 8-minute walking sessions separated by at ...
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