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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 ...
Fisher James P - - 2013
The autonomic responses to exercise are orchestrated by the interactions of several central and peripheral neural mechanisms. This short report will focus on the role of peripheral feedback from skeletal muscle afferents in the autonomic control of the heart during exercise in humans. Heart rate responses to passive calf stretch ...
Moore Chelsea M - - 2013
This study evaluated the effects of acute hypoxia and physical exertion on marksmanship. At each of five simulated altitudes (162 m, SL; 1015 m, 1K; 2146 m, 2K; 3085 m ,3K; 3962 m, 4K), subjects performed four shooting trials: at rest, immediately after a 60-s run with load, and twice ...
Kölegård Roger - - 2013
Fighter pilots are commonly recommended strength training as a means of improving the tolerance to withstand high gravitoinertial (G) loads. Previous studies on the effect of short-term strength-training regimens on G-endurance show equivocal results, with a majority of the studies suggesting improved G-endurance. The mechanisms underlying such improvement are unknown. ...
Kiviniemi Antti M - - 2013
Type 2 diabetes (T2D) has shown limited impact on cardiac autonomic function in patients with cardiac disease at rest. The effect of T2D on autonomic responses to sympathetic stimuli, such as passive tilt and static exercise, is not well known in patients with coronary artery disease (CAD). Heart rate, arterial ...
Dai Chih-Ta - - 2013
The purpose of this study was to investigate the relationship between exercise mode and executive function and its effect on behavior and neuroelectric activity. Forty-eight older adults were classified into open-skill, closed-skill, and irregular exercise groups based on their experience of exercise participation. Executive function was measured via a task-switching ...
Pal Sebely - - 2013
Physical activity seems to enhance cardiovascular fitness during the course of the lifecycle, improve blood pressure, and is associated with decreased prevalence of hypertension and coronary heart disease. It may also delay or prevent age-related increases in arterial stiffness. It is unclear if specific exercise types (aerobic, resistance, or combination) ...
Schoenenberger Andreas Wolfgang - - 2013
Body weight (BW) and blood pressure (BP) have a close relationship, which has been accounted for by hormonal changes. No previous study has evaluated the effect of wearing an external weight vest on BP to determine whether there is a simple mechanism between BW and BP. Seventeen healthy volunteers underwent ...
Schoenfeld Brad J - - 2013
In humans, regimented resistance training has been shown to promote substantial increases in skeletal muscle mass. With respect to traditional resistance training methods, the prevailing opinion is that an intensity of greater than ~60 % of 1 repetition maximum (RM) is necessary to elicit significant increases in muscular size. It has ...
Hedayatpour Nosratollah - - 2013
Appropriate timing of activity of the vastus medialis obliqus (VMO) and vastus lateralis (VL) muscles is a key factor for proper tracking of the patella in the trochlear groove during knee extension. This study investigates the relative timing of activation of the VMO and VL muscles during unexpected perturbations performed ...
Kuniyoshi Ricardo R - - 2013
Muscle sympathetic nerve activity (MSNA) is an independent prognostic marker in patients with heart failure (HF). Therefore, its relevance to the treatment of HF patients is unquestionable. In this study, we investigated the effects of cardiac resynchronization therapy (CRT) on MSNA response at rest and during exercise in patients with ...
Donesky Doranne - - 2013
The perception of dyspnea includes both sensory and affective dimensions that are shaped by emotions and psychological, social, and environmental experiences. Previous investigators have studied either measurement or strategies to decrease the affective dimension with laboratory-induced dyspnea. Few have reported the effect of a therapeutic clinical intervention on the affective ...
Banzet Sébastien - - 2013
Here, we studied muscle-specific and muscle-related miRNAs in plasma of exercising humans. Our aim was to determine whether they are affected by eccentric and/or concentric exercise modes and could be biomarkers of muscle injuries or possible signaling molecules. On two separate days, nine healthy subjects randomly performed two 30-min walking ...
Florian John P - - 2013
The physiological responses to water immersion (WI) are known; however, the responses to stress following WI are poorly characterized. Ten healthy men were exposed to three physiological stressors before and after a 6-hr resting WI (32-33 °C): 1) 2-min cold pressor test, 2) static handgrip test to fatigue at 40% ...
Tilles Stephen A SA ASTHMA Inc Clinical Research Center, Seattle, Washington; Northwest Asthma and Allergy Center, Seattle, Washington. Electronic address: - - 2013
Exercise-induced respiratory symptoms associated with paradoxical laryngeal motion are relatively common and often mistaken for asthma. Exercise-induced vocal cord dysfunction (VCD) and exercise-induced laryngomalacia (LM) have been described separately in the literature but have never been systematically compared. To compare subjects with a confirmed diagnosis of exercise-induced VCD or exercise-induced ...
Tyler Christopher James - - 2013
Exercise is impaired in hot, compared with moderate, conditions. The development of hyperthermia is strongly linked to the impairment and as a result various strategies have been investigated to combat this condition. This meta-analysis focused on the most popular strategy: cooling. Precooling has received the most attention but recently cooling ...
Brito Aline de F - - 2013
To evaluate the effects of high-intensity resistance exercise on postexercise hypotension (PEH) and forearm vascular resistance (FVR) in the hypertensive elderly. The study was conducted with ten hypertensive elderly individuals (65 ± 3 years, 28·7 ± 3 kg m(-2) ). They were subjected to three experimental sessions: control session (SC), exercise 50% (S50%) and 80% (S80%) of ...
Jendzjowsky Nicholas G - - 2013
We hypothesized that exercise training (ET) would alter α2 adrenoreceptor mediated sympathetic vasoconstriction. Sprague-dawley rats (n=30) were randomized to sedentary (S), mild- (M) or heavy-intensity (H) treadmill ET groups (5 days·week(-1) for 4 weeks). Following the exercise training component of the study, rats were anesthetised, instrumented for lumbar sympathetic chain ...
Leal Anna K AK Heart and Vascular Institute, Penn State College of Medicine, Hershey, Pennsylvania; - - 2013
In rats with ligated femoral arteries, the exercise pressor reflex is exaggerated, an effect that is attenuated by stimulation of peripheral μ-opioid receptors on group IV metabosensitive afferents. In contrast, δ-opioid receptors are expressed mostly on group III mechanosensitive afferents, a finding that prompted us to determine whether stimulation of ...
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