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Amaral da Silva Souza Marcus Vinicius - - 2013
Chagas disease (CD) is an infection caused by the protozoan flagellate Trypanosoma cruzi, and transmitted by insects of the genera Triatoma, Rhodnius and Panstrongylus. The heart is affected to varying degrees by inflammatory and destructive lesions in atrial and ventricular myocardial fibers. Several studies have demonstrated the benefits of exercise ...
Shabeeh Husain H King's College London British Heart Foundation Centre, London, United - - 2013
Nitric oxide (NO) release from endothelial NO synthase (eNOS) and/or neuronal NO synthase (nNOS) could be modulated by sympathetic nerve activity and contribute to increased blood flow after exercise. We examined the effects of brachial-arterial infusion of the nNOS selective inhibitor S-methyl-l-thiocitrulline (SMTC) and the nonselective NOS inhibitor N(G)-monomethyl-l-arginine (l-NMMA) ...
Crecelius Anne R AR Human Cardiovascular Physiology Laboratory, Department of Health and Exercise Science, Vascular Physiology Research Group, Department of Biomedical Sciences, Colorado State University, Fort Collins, CO, - - 2013
Intravascular adenosine triphosphate (ATP) evokes vasodilation and is implicated in the regulation of skeletal muscle blood flow during exercise. Mechanical stresses to erythrocytes and endothelial cells stimulate ATP release in vitro. How mechanical effects of muscle contractions contribute to increased plasma ATP during exercise is largely unexplored. We tested the ...
Millen Aletta M E - - 2013
To determine whether exercise training-induced decreases in blood pressure (BP) can be explained by decreases in aortic systolic pressure augmentation in overweight or obese individuals. Thirty-five sedentary or recreationally active men and women (30-57 years) who were either overweight (40 %) or obese (60 %) completed 6 weeks of exercise training (≥3 days/week; stationary bike ...
Abudiab Muaz M - - 2013
AIMS: Exercise intolerance is a hallmark of heart failure with preserved ejection fraction (HFpEF), yet its mechanisms remain unclear. The current study sought to determine whether increases in cardiac output (CO) during exercise are appropriately matched to metabolic demands in HFpEF. METHODS AND RESULTS: Patients with HFpEF (n = 109) ...
Moen Phyllis - - 2013
Drawing on two waves of survey data conducted six months apart in 2006, this study examined the impacts of a team-level flexibility initiative (ROWE--results only work environment) on changes in the work-home spillover and health behavior of employees at the Midwest headquarters of a large U.S. corporation. Using cluster analysis, ...
Spranger Marty D MD Department of Physiology and The Cardiovascular Research Institute, Wayne State University School of Medicine, Detroit, MI 48201, - - 2013
Muscle metaboreflex activation (MMA) during submaximal dynamic exercise in normal individuals increases mean arterial pressure (MAP) via increases in cardiac output (CO) with little peripheral vasoconstriction. The rise in CO occurs primarily via increases in heart rate (HR) with maintained or slightly increased stroke volume. When the reflex is sustained ...
Schmidt Barbara - - 2013
Theories of an optimal level of arousal suggest that underaroused humans seek stimulation to enhance their arousal. One way to increase arousal is risky behavior during gambling. In the current study, we show that the lower the participants' resting arousal, measured via resting heart rate, the riskier they acted in ...
Blanco-Rivero Javier - - 2013
OBJECTIVE:: To study the effect of aerobic exercise training on sympathetic, nitrergic and sensory innervation function in superior mesenteric artery from spontaneously hypertensive rats (SHRs). METHODS:: De-endothelized vascular rings from sedentary and trained SHRs (treadmill 12 weeks) were used. Vasomotor responses to electrical field stimulation (EFS), noradrenaline, nitric oxide donor ...
Kwok Sit-Yee - - 2013
OBJECTIVE: Resting heart rate (RHR) is increasingly recognised as a prognostic marker for long term cardiovascular outcomes in adults. This study assessed associations of RHR with blood pressure (BP), anthropometry and exercise in a large representative sample of Hong Kong children. STUDY DESIGN, SETTING AND SUBJECTS: A territory-wide growth survey ...
Shim Chi Young - - 2013
Uncoupling between heart and vessel may be accompanied by left ventricular (LV) dysfunction during exercise. We investigated the association between ventricular-vascular uncoupling during exercise and impaired LV longitudinal functional reserve in hypertensive subjects. Supine bicycle exercise echocardiography (25-watt, 3-minute increments) was performed in 216 hypertensive patients (106 male; mean age, ...
Hu Wei-Tong - - 2013
OBJECTIVES: It is known that one-arm exercise increases the interarm diastolic blood pressure difference (dIAD) in young individuals, but no research has been carried out in middle-aged and more senior populations. This study aimed to determine whether aging impacts the exercise-induced dIAD in healthy individuals. METHODS: Normotensive adults (n=120) were ...
Real C C CC Laboratory of Cellular Neurobiology, Department of Physiology and Biophysics, University of São Paulo, São Paulo, SP 05508-000, Brazil. - - 2013
Physical exercise is known to produce beneficial effects to the nervous system. In most cases, brain-derived neurotrophic factor (BDNF) is involved in such effects. However, little is known on the role of BDNF in exercise-related effects on Parkinson's disease (PD). The aim of this study was to investigate the effects ...
Yeung Pollen K F - - 2013
OBJECTIVE: The mechanisms of exercise-induced health benefits are complex and not fully understood. This study investigated the effects of exercise and hypertension on cardiovascular hemodynamic responses and red blood cell (RBC) concentrations of purine nucleotides using normotensive and hypertensive rat models in vivo. METHODS: Sprague Dawley rats (SDRs) and spontaneously ...
Ertaş Faruk - - 2013
This study was aimed to investigate sensitivity and specificity of QT dispersion (QTd) as a predictor of hypertensive response to peak exercise stress testing (EST). Fifty-nine patients were divided in to two groups (32 patients with exaggerated blood pressure response (EBPR) to EST group and 27 patients for normotensive group) ...
Kelly P G - - 2013
REASONS FOR PERFORMING THE STUDY: Endoscopic examination of Thoroughbred (TB) yearlings is performed routinely to determine the suitability of horses for racing and to ensure that the conditions of sale are satisfied. However, previous research has demonstrated that resting endoscopic examination can be inaccurate in the diagnosis of functional pathology ...
Mairer K - - 2013
Acute mountain sickness (AMS) is a common condition among non-acclimatized individuals ascending to high altitude. Exercise, a characteristic feature of hiking and mountaineering, has been suggested to exacerbate AMS prevalence and to cause modifications of the autonomic nervous system. A reduction of the heart rate variability (HRV) is a common ...
Gaffurini P - - 2013
Background: Activity promoting video game (APVG) practice significantly affects energy metabolism through energy expenditure (EE) increase and has been recently included in strategies for health promotion. It is not known if the APVG practice provides similar outcomes in subjects with spinal cord injury (SCI). Aim: Aim of the study was ...
Morgan Gareth J - - 2013
The goal of this study was to prospectively assess blood pressure (BP) and echocardiographic parameters to delineate the incidence and nature of the hypertension burden in this cohort. Few data are available on the long-term outcomes of aortic stenting. Thirty-one patients with successfully stented coarctation during childhood (mean age 12.4 ...
Stracciolini Andrea - - 2013
Primary care physicians, particularly pediatricians, are expected to promote physical activity and prescribe exercise to patients. Unfortunately, many health care professionals do not have adequate skills or experience in this area, making exercise intervention logistically and psychologically challenging. Exercise-deficit disorder (EDD), which is a new term to the literature, is ...
Heydari Mehrdad - - 2013
The effect of a 12-week high-intensity intermittent exercise (HIIE) intervention on the rating of perceived exertion (RPE) response of young males was examined. Participants (N = 38; M BMI = 28.7 kg x m(-2), SD = 3.1; M age = 24.9 yr., SD = 4.3) were randomly assigned to either ...
Roque Fernanda R FR Departamento de Farmacología, Facultad de Medicina, Universidad Autónoma de Madrid, Instituto de Investigación Hospital Universitario La Paz (IdiPAZ), Madrid, - - 2013
Regular physical activity is an effective non-pharmacological therapy for prevention and control of hypertension. We investigated the effects of aerobic exercise training in vascular remodelling and in the mechanical and functional alterations of coronary and small mesenteric arteries from spontaneously hypertensive rats (SHR). Normotensive Wistar Kyoto (WKY), SHR and SHR ...
Sampedro-Piquero P - - 2013
We have studied the effects of exercise in aged rats (18 months-old) on spatial learning and changes in neuronal metabolic activity associated with exercise program and the spatial learning process. The changes on neuronal oxidative metabolic activity was studied through cytochrome c oxidase histochemistry (COx) in brain regions related to ...
Boutcher Stephen H - - 2013
Abstract Major individual differences in the maximal oxygen uptake response to aerobic training have been documented. Vagal influence on the heart has been shown to contribute to changes in aerobic fitness. Whether vagal influence on the heart also predicts maximal oxygen uptake response to interval-sprinting training, however, is undetermined. Thus, ...
Kusunose Kenya - - 2013
BACKGROUND: -The role of exercise-induced pulmonary hypertension (exPHT) in decision-making regarding surgical timing for asymptomatic chronic mitral regurgitation (MR) is controversial. We reasoned that the exPHT response could not be interpreted without knowledge of right ventricular (RV) function. The aim of this study was to assess the role of RV ...
Miyai Nobuyuki - - 2013
Metabolic syndrome (MS) may influence vascular reactivity and might cause an excessive increase in blood pressure (BP) during dynamic exercise. We examined this hypothesis in 698 normotensive men (mean age: 43 years) free of cardiovascular disease, diabetes mellitus and renal disease. The response of BP to exercise was assessed by ...
Davis Robert T RT 3rd Department of Applied Physiology and Kinesiology and Center for Exercise Science, University of Florida, Gainesville, Florida 32611, - - 2013
Adipose tissue (AT), which typically comprises an increased percentage of body mass with advancing age, receives a large proportion of resting cardiac output. During exercise, an old age-associated inability to increase vascular resistance within the intra-abdominal AT may compromise the ability of the cardiovascular system to redistribute blood flow to ...
Besson D - - 2013
OBJECTIVES: To evaluate, in chronic heart failure (CHF) patients, feasibility, safety, compliance and functional improvements of an eccentric (ECC) cycle training protocol personalized by the rate of perceived exertion (RPE; 9-11 Borg Scale), compared to concentric (CON) training at workload corresponding to the first ventilatory threshold. METHODS: Thirty patients were ...
Moraes-Silva Ivana Cinthya - - 2013
High fructose consumption contributes to metabolic syndrome incidence, whereas exercise training promotes several beneficial adaptations. In this study, we demonstrated the preventive role of exercise training in the metabolic syndrome derangements in a rat model. Wistar rats receiving fructose overload in drinking water (100 g/l) were concomitantly trained on a ...
Flynn Jamie R - - 2013
Following spinal cord injury (SCI), anatomical changes such as axonal sprouting occur within weeks in the vicinity of the injury. Exercise training enhances axon sprouting, however, the exact mechanisms that mediate exercised-induced plasticity are unknown. We studied the effects of exercise training after SCI on the intrinsic and synaptic properties ...
Singh Tarkeshwar T Department of Biomedical Engineering, Cleveland Clinic, Cleveland, OH, 44195, USA. - - 2013
We investigated the effects of exercise-induced fatigue of a digit on the biomechanics of a static prehension task. The participants were divided into two groups. One group performed the fatiguing exercise using the thumb (group-thumb) and the second group performed the exercise using the index finger (group-index). We analyzed the ...
Willie Christopher K - - 2013
The post-exercise period is associated with hypotension, and an increased risk of syncope attributed to decreases in venous return and/or vascular resistance. Increased local and systemic vasodilators, sympatholysis, and attenuated baroreflex sensitivity following exercise are also manifest. Although resting cerebral blood flow is maintained, cerebrovascular regulation to acute decreases in ...
Kirby Brett S - - 2013
Exercise hyperemia is regulated by several factors and one factor known to increase with exercise that evokes powerful vasomotor action is extracellular ATP. The origination of ATP detectable in plasma from exercising muscle of humans is, however, a matter of debate and ATP has been suggested to arise from sympathetic ...
Held Heather E - - 2013
Submersion and increased pressure (depth) characterize the diving environment and may independently increase demand on the respiratory system. To quantify changes in respiratory mechanics, this study employed a unique protocol and techniques to measure, in a hyperbaric chamber, inspiratory and expiratory alveolar pressures (P(AI) and P(AE), interrupter technique), inspiratory and ...
Bridge C A - - 2013
The aim of this study was to determine the external validity of Taekwondo-specific exercise protocols. 10 male international Taekwondo competitors (age 18±2 years) took part in a championship combat and an exercise protocol that simulated the activity pattern of Taekwondo combat. Heart rate and venous blood samples were obtained in ...
Rüfer Florian - - 2013
Purpose:  To compare the influence of aerobic and resistance exercise on intraocular pressure (IOP). Methods:  Twenty-one healthy subjects participated. Aerobic exercise was performed using a cycle ergometer, and resistance exercise was performed with a leg curl and a butterfly machine. Intraocular pressure was measured at baseline, during exercise and 10 min ...
McDonnell Barry J BJ Cardiff School of Health Sciences, Cardiff Metropolitan University, Cardiff, UK. - - 2013
Regular exercise is associated with a reduction in cardiovascular risk, but the precise mechanisms responsible are unknown. The aim of the current study was to examine the relationship between regular exercise, aortic stiffness, and wave reflections, and to determine whether this relationship differs by age. Younger (<30 years) and older ...
Jendzjowsky Nicholas G NG Faculty of Physical Education and Recreation, University of Alberta, E-435 Van Vliet Centre, Edmonton, Alberta, Canada T6G 2H9. - - 2013
We tested the hypothesis that short-term mild- (M) and heavy-intensity (H) exercise training would enhance sympatholysis through a nitric oxide (NO)-dependent mechanism. Sprague-Dawley rats (n = 36) were randomly assigned to sedentary (S) or to M (20 m min(-1) 5% gradient) or H exercise training groups (40 m min(-1) 5% ...
Hauton David - - 2013
Chronic catecholamine production is associated with desensitisation and down-regulation of adrenergic receptors and occurs in conditions, such as heart failure and myocardial infarction. The effects of further acute adrenergic stimulation, which may occur during exercise, and their subsequent effects on chemosensitivity and ventilation are unclear. Chronic isoprenaline (ISO) increased ventilation ...
Elliott Adrian D - - 2013
BACKGROUND: There remains considerable debate regarding the limiting factor(s) for maximal oxygen uptake (VO(2max)). Previous studies have shown that the central circulation may be the primary limiting factor for VO(2max) and that cardiac work increases beyond VO(2max). AIM: We sought to evaluate whether the work of the heart limits VO(2max) ...
Katayama Keisho - - 2013
The purpose of the present study was to clarify the influence of inspiratory resistive breathing during exercise under hypoxic condition on muscle sympathetic nerve activity (MSNA) and blood pressure (BP). Six healthy males completed this study. The subjects performed a submaximal exercise test using a cycle ergometer in a semi-recumbent ...
Rossi Amanda M - - 2013
There is limited information regarding the synergistic or additive effects of metabolic syndrome (MS) and endothelial dysfunction (ED) on cardiovascular disease (CVD). Altered cardiovascular responses to exercise have been shown to predict future cardiovascular events as well as assess autonomic function. The present study evaluated the impact of MS and ...
Berry Tanya R - - 2013
To examine whether participants who watched an exercise-related segment of The Biggest Loser television program would have different explicit and implicit affective exercise-related attitudes than those of control participants. University students (N=138) watched a clip of The Biggest Loser or American Idol, then completed a Go/No-go Association Task, a thought-listing ...
da Silva Alves Eduardo - - 2013
An increase in the prevalence of obesity in people with spinal cord injury can contribute to low-grade chronic inflammation and increase the risk of infection in this population. A decrease in sympathetic activity contributes to immunosuppression due to the lower activation of immune cells in the blood. The effects of ...
Stryła Wanda - - 2013
Proprioception, or kinesthesia, is the sense of orientation responsible for perception of body and relative position of its parts. Kinaesthesia is received by receptors located in muscles and tendons. In this study a set of proprioception developing exercises was presented. Proprioception should be restored in case of musculoskeletal and neurological ...
Cornelissen Veronique A - - 2013
We conducted meta-analyses examining the effects of endurance, dynamic resistance, combined endurance and resistance training, and isometric resistance training on resting blood pressure (BP) in adults. The aims were to quantify and compare BP changes for each training modality and identify patient subgroups exhibiting the largest BP changes. Randomized controlled ...
Rundell Kenneth W - - 2013
Patients are referred often because of self-reported symptoms of dyspnea and wheeze during exercise. The two common causes of exercise-induced dyspnea are exercise-induced bronchoconstriction (EIB) and vocal cord dysfunction (VCD). It can be extraordinarily difficult to differentiate between the two, especially because they may coexist in the same patient. EIB ...
Graziano Alessandro - - 2013
Physical exercise promotes neural plasticity in the brain of healthy subjects and modulates pathophysiological neural plasticity after sensorimotor loss, but the mechanisms of this action are not fully understood. After spinal cord injury, cortical reorganization can be maximized by exercising the non-affected body or the residual functions of the affected ...
Pankratow Melanie - - 2013
To examine the effects of reading exercise-related magazine articles (health, appearance, or control) and the moderating effects of exercise self-identity on reasons for exercise and perceptions of attractiveness, among women in first year university. An additional purpose was to use a thought listing technique, the results of which were examined ...
Bilińska Maria - - 2013
Little is known about the influence of aerobic training on the neurohormonal and hemodynamic responses to head-up tilt (HUT) and on autonomic balance at rest and after exercise in optimally treated, low risk post-coronary artery bypass grafting (CABG) patients. One hundred male patients, mean age 56 ± 6 years, 3 ...
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