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Results 351 - 400 of 1435
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Deminice Rafael - - 2011
The aim of this study was to evaluate the effect of creatine supplementation on homocysteine (Hcy) metabolism after acute aerobic and anaerobic exercise. A total of 112 Wistar rats were divided into four groups: aerobic exercise (A), aerobic exercise plus creatine supplementation (ACr), anaerobic exercise (An), and anaerobic exercise plus ...
Tsougos Elias - - 2011
To investigate whether exercise-induced changes of the E/E' average ratio can detect high-burden coronary artery disease (CAD) in patients with chest pain and normal left ventricular (LV) systolic function. The study population consisted of 359 patients admitted for chest pain (59.8 ± 9.8 years, 75% male). Patients underwent exercise echocardiography, scintigraphy and coronary ...
Devereux Gavin R - - 2011
In this study, we examined the correlations between selected markers of isometric training intensity and subsequent reductions in resting blood pressure. Thirteen participants performed a discontinuous incremental isometric exercise test to volitional exhaustion at which point mean torque for the final 2-min stage (2min-torque(peak)) and peak heart rate peak (HR(peak)) ...
de Liefde Inge I - - 2011
OBJECTIVE: Earlier studies have shown that hypertensive or hypotensive blood pressure (BP) response during a preoperative treadmill exercise test in patients with peripheral arterial disease is associated with a two-fold increased risk of cardiovascular events and mortality. However, it is unknown if these patients also experience an increased perioperative complication ...
Greer Beau K - - 2011
Greer, BK and Jones, BT. Acute arginine supplementation fails to improve muscle endurance or affect blood pressure responses to resistance training. J Strength Cond Res 25(X): 000-000, 2011-Dietary supplement companies claim that arginine supplements acutely enhance skeletal muscular endurance. The purpose of this study was to determine whether acute arginine ...
Monzen Hajime - - 2011
BACKGROUND: The combination of adenosine infusion with low-level exercise has become a common approach for inducing stress during stress myocardial perfusion imaging (MPI). We investigated stress MPI performed by combined low-level exercise and adenosine infusion. This combined protocol can decrease adverse reactions and reduce the effect of scattered rays from ...
Straburzyńska-Migaj Ewa - - 2011
OBJECTIVES: To evaluate influence of Bone Marrow Stem Cells (BMSC) intracoronary infusion on exercise capacity, pulmonary function, heart rate recovery and SAECG in patients with AMI of anterior wall, compared to control group - from baseline in the acute phase during 12months follow up. METHODS: Forty five patients were randomized ...
Mascher Henrik - - 2011
Aim:  The major aim of the present investigation was to determine the fractional rate of protein synthesis (FSR) during the early period of recovery after intensive aerobic exercise in the absence of nutritional supplementation. Methods:  Sixteen male subjects performed one-legged cycling exercise for 1h at approximately 65-70% of their one-legged ...
Sondergaard Esben E Dept. of Endocrinology and Internal Medicine, Aarhus Univ. Hospital, Norrebrogade 44, DK-8000 Aarhus C, - - 2011
Lipids are important substrates for oxidation at rest and during exercise. Aerobic exercise mediates a delayed onset decrease in total and VLDL-triglyceride (TG) plasma concentration. However, the acute effects of exercise on VLDL-TG oxidation and turnover remain unclear. Here, we studied the acute effects of 90 min of moderate-intensity exercise ...
Stagg Nicola J - - 2011
BACKGROUND:: Exercise is often prescribed as a therapy for chronic pain. Short-term exercise briefly increases the production of endogenous analgesics, leading to transient antinociception. In limited studies, exercise produced sustained increases in endogenous opioids, sustained analgesia, or diminished measures of chronic pain. This study tests the hypothesis that regular aerobic ...
Farinatti Paulo T V - - 2011
Farinatti, PTV, Brandão, C, Soares, PPS, and Duarte, AFA. Acute effects of stretching exercise on the heart rate variability in subjects with low flexibility levels. J Strength Cond Res 25(X): 000-000, 2011-The study investigated the heart rate (HR) and heart rate variability (HRV) before, during, and after stretching exercises performed ...
Lovering Andrew T AT University of Oregon, Department of Human Physiology, Eugene, Oregon, - - 2011
The prevalence of a patent foramen ovale (PFO) is ~30%, and this source of right-to-left shunt could result in greater pulmonary gas exchange impairment at rest and during exercise. The aim of this work was to determine if individuals with an asymptomatic PFO (PFO+) have greater pulmonary gas exchange inefficiency ...
de Liefde I I - - 2011
Background: Exercise test parameters (exercise ankle brachial index (ABI), walking distance and blood pressure response) separately are associated with long-term outcome in patients with known or suspected peripheral arterial disease (PAD). However, the clinical value of the combination of these parameters together is unknown. Methods: 2165 patients performed a treadmill ...
Evangelista Renato - - 2011
To compare differences between two different rest interval lengths between sets on the volume completed, muscle damage and muscle soreness during a resistance exercise bout. Twenty-eight healthy sedentary men (18 ± 1 y old) volunteered to participate in this study and were divided into the 1 min (1RI; n = ...
Gebauer Dieter P - - 2011
: To test the hypothesis that 2 types of custom-made mouthguards will have no effect on ventilation (&OV0312;E, L·min), oxygen uptake (&OV0312;O2, mL·kg·min·), and heart rate (beats per minutes) at varying exercise intensities (10 km·h and 12 km·h) and at subjective maximal effort (&OV0312;O2peak) in male field hockey and water ...
Tartibian Bakhtyar - - 2011
: To examine the effect of ingestion of omega-3 (N-3) fatty acids on the production of interleukin (IL) 6, tumor necrosis factor (TNF) α, prostaglandin (PG) E2, lactate dehydrogenase (LDH), creatine kinase (CK), and myoglobin (Mb) during an eccentric exercise program. : A randomized, double-blinded, repeated measures design was used ...
Coiro V - - 2011
The effect of an i. v. infusion of somatostatin (SRIH) 4.1 μg/min×90 min on the basal secretion of NPY and on the NPY response to physical exercise was studied in normal men. Basal NPY secretion was not modified by SRIH infusion, whereas the NPY response to physical exercise was significantly ...
Başkurt M - - 2011
The aim of this study was to detect any relationship between serum high-sensitivity C-reactive protein (hs-CRP), serum amyloid-associated protein (SAA) and N-terminal pro B-type natriuretic peptide (NT-proBNP) levels, and reversible myocardial ischaemia during cardiovascular exercise tests and to determine whether these biomarkers could predict transient myocardial ischaemia. Ninety-six patients (36 ...
Ciolac Emmanuel G - - 2011
Exercise training is an effective intervention for treating and preventing hypertension, but its effects on heart rate (HR) response to exercise and cardiorespiratory fitness (CRF) of non-hypertensive offspring of hypertensive parents (FH+) has not been studied. We compared the effects of three times per week equal-volume high-intensity aerobic interval (AIT) ...
Kirby Brett S - - 2011
The ability to modulate sympathetic α-adrenergic vasoconstriction in contracting muscle is impaired with age. In young adults, adenosine triphosphate (ATP) has been shown to blunt sympathetic vasoconstrictor responsiveness similar to exercise. Therefore, we tested the hypothesis that modulation of postjunctional α-adrenergic vasoconstriction to exogenous ATP is impaired in ageing humans.We ...
Adser H - - 2011
Aim:  The aim of the present study was to test the hypothesis that interleukin-6 plays a role in exercise-induced PGC-1α and TNFα mRNA responses in skeletal muscle and to examine the potential IL-6 mediated AMPK regulation in these responses. Methods:  Whole body IL-6 knockout and wildtype (WT) male mice (4 ...
Maarbjerg Stine J - - 2011
Exercise counteracts insulin resistance and improves glucose homeostasis in many ways. Apart from increasing muscle glucose uptake quickly, exercise also clearly increases muscle insulin sensitivity in the post exercise period. This review will focus on the mechanisms responsible for this increased insulin sensitivity. It is believed that increased sarcolemmal content ...
Van De Bruaene Alexander - - 2011
Volume overload of the pulmonary circulation in patients with atrial septal defect (ASD)-type secundum causes pulmonary vascular disease over a long period of time. This study aimed at (1) evaluating pulmonary vascular resistance (PVR) and (2) investigating the relation between PVR and exercise capacity in patients with open and closed ...
Hager Alfred A Department of Pediatric Cardiology and Congenital Heart Disease, Deutsches Herzzentrum München, Technische Universität München, Lazarettstrasse 36, Munich, Germany. - - 2012
Even after excellent repair of aortic coarctation without restenosis there are limitations in exercise capacity at long-term follow-up. This study was performed to assess the contribution of inherited genomic polymorphisms to exercise capacity in patients without restenosis. 122 patients aged 17-72 years, 46 female, 76 male, seen 2-27 years after ...
de Liefde Inge I - - 2011
BACKGROUND: The clinical value of exercise ankle brachial index (ABI) is still unclear, especially in patients with normal resting ABI. METHOD: 2164 patients performed a single-stage treadmill exercise test to diagnose or evaluate PAD. The population was divided into two groups: a normal resting ABI (resting ABI≥0.90) and PAD (resting ...
Green Jackson G - - 2011
Exercise has the potential to alleviate the resistance to insulin-mediated glucose uptake precipitated by elevated circulating free fatty acids (FFAs) in conditions such as obesity, lipid infusion, and starvation. In this study, 6 lean healthy men underwent two 3-day periods of starvation with either no exercise or daily endurance exercise ...
Borel Benoit - - 2011
BACKGROUND: The aim of this study was to evaluate the occurrence and severity of mechanical ventilatory constraints in healthy prepubescent children during continuous and intermittent exercise. METHODS: Twelve prepubescent children (7-11 years old) performed 7 exercises on a treadmill: one graded test for the determination of maximal aerobic speed (MAS), ...
Prado Eduardo Seixas - - 2011
Hyperammonaemia is related to both central and peripheral fatigue during exercise. Hyperammonaemia in response to exercise can be reduced through supplementation with either amino acids or combined keto analogues and amino acids (KAAA). In the present study, we determined the effect of short-term KAAA supplementation on ammonia production in subjects ...
Thrush A Brianne - - 2011
Ceramide accumulation has been implicated in the impairment of insulin-stimulated glucose transport in skeletal muscle following saturated fatty acid (FA) exposure. Importantly, a single bout of exercise can protect against acute lipid-induced insulin resistance. The mechanism by which exercise protects against lipid-induced insulin resistance is not completely known, but may ...
Cilli Aykut - - 2011
To address the yield of routine exercise stress testing as a screening tool for subclinical coronary artery disease (CAD) in patients with moderate to severe obstructive sleep apnea (OSA). A cross-sectional study in a university hospital. Of 380 consecutive patients with OSA, data from 206 subjects (mean apnea-hypopnea index [AHI] ...
Knab Amy M - - 2011
INTRODUCTION:: The magnitude and duration of the elevation in resting energy expenditure following vigorous exercise have not been measured in a metabolic chamber. This study investigated the effects of inserting a 45-min vigorous cycling bout into the daily schedule versus a controlled resting day on 24-h energy expenditure in a ...
Thatcher Joanne - - 2011
We examined the hypothesis that congruence between motivational dominance and state results in optimal psychological responses and performance during exercise. Twenty participants (10 telic dominant and 10 paratelic dominant) rated their stress at 5 min intervals as they cycled on an ergometer at gas exchange threshold for 30 min in both telic ...
Price Mike J - - 2011
We examined the effects of concomitant increases in crank rate and power output on incremental arm crank ergometry. Ten healthy males undertook three incremental upper body exercise tests to volitional exhaustion. The first test determined peak minute power. The subsequent tests involved arm cranking at an initial workload of 40% ...
Zafeiridis Andreas - - 2011
This study assessed the extent of aerobic system activation in young adolescents and men during heavy continuous (HC), short-interval (SI), and long-interval (LI) aerobic exercise protocols, and compared this response between the 2 age groups in the 3 protocols. Ten young adolescents (aged 13.2 ± 0.3 years) and 10 men (aged 21.0 ± 1.6 years) ...
Kukuła Krzysztof - - 2011
VIF-CAD randomized, placebo-controlled, double-blind trial was an attempt to induce therapeutic angiogenesis by percutaneous intramyocardial transfer of bicistronic (vascular endothelial growth factor/fibroblast growth factor [VEGF/FGF]) plasmid (pVIF) in patients with refractory heart ischemia. Myocardial perfusion, clinical symptoms, exercise tolerance, left ventricular function, and safety were assessed. Fifty-two patients with refractory ...
Casey Darren P - - 2011
We tested the hypotheses that (1) the compensatory vasodilatation in skeletal muscle during hypoxic exercise is attenuated in ageing humans and (2) local inhibition of nitric oxide (NO) synthesis in the forearm of ageing humans will have less impact on the compensatory dilatation during rhythmic exercise with hypoxia, due to ...
Mandroukas Athanasios - - 2011
Mandroukas, A, Heller, J, Metaxas, TI, Sendelides, T, Riganas, C, Vamvakoudis, E, Christoulas, K, Stefanidis, P, Karagiannis, V, Kyparos, A, and Mandroukas, K. Cardiorespiratory and metabolic alterations during exercise and passive recovery after three modes of exercise. J Strength Cond Res 25(X): 000-000, 2011-The objective of this study was to ...
Murakami Taro - - 2011
An acute bout of exercise induces repression of protein synthesis in skeletal muscle due in part to reduced signaling through the mammalian target of rapamycin complex 1 (mTORC1). Previous studies have shown that upregulated expression of regulated in DNA damage and development (REDD) 1 and 2 is an important mechanism ...
Yamada Tomohide - - 2011
Slow heart rate recovery (HRR) predicts all-cause mortality. This study investigated the relationship between silent myocardial ischemia (SMI) and HRR in type 2 diabetes. The study enrolled 87 consecutive patients with type 2 diabetes and no chest symptoms. They underwent treadmill exercise testing and single-photon emission computed tomography imaging with ...
Tanskanen Minna M - - 2011
We hypothesized that increased oxidative stress and disrupted redox balance may be predisposing factors and markers for overreaching (OR). PURPOSE:: To examine whether oxidative stress markers and antioxidant status and physical fitness are related to overreaching during an 8-week military basic training (BT) period. METHODS:: Oxidative stress and antioxidant status ...
Johnson Nils P - - 2011
We sought to determine the differential prognosis of patients with a normal single-photon emission computed tomographic (SPECT) perfusion study by type of stress modality. Even with a normal SPECT perfusion study, patients selected for adenosine stress have a worse survival than those selected for exercise stress. In patients who are ...
Rowland Thomas - - 2011
A recent report indicated that variations in myocardial functional (systolic and diastolic) responses to exercise do not contribute to inter-individual differences in aerobic fitness (peak VO(2)) among young males. This study was designed to investigate the same question among adolescent females. Thirteen highly fit adolescent football (soccer) players (peak VO(2) ...
Hamrin K - - 2011
Context: The mechanisms behind the positive effects of physical activity on glucose metabolism in skeletal muscle and the time course of the effects need to be more elucidated. Objective: The aim was to examine the prolonged effects of an acute bout of one-legged exercise on local skeletal muscle glucose utilization ...
da Luz Gabrielle - - 2011
Obesity-induced endoplasmatic reticulum (ER) stress has been demonstrated to underlie the induction of obesity-induced JNK and NF-κB activation inflammatory responses, and generation of peripheral insulin resistance. On the other hand, exercise has been used as a crucial tool in obese and diabetic patients, and may reduce inflammatory pathway stimulation. However, ...
Usui Tatsuya - - 2011
The aim of the present study was to examine whether amount of oral antimicrobial components, human β-defensin-2 (HBD-2), cathelicidin (LL-37), and immunoglobulin A (IgA), might be affected by prolonged strenuous exercise. Ten young male volunteers either exercised on recumbent ergometer at 75% [Formula: see text] for 60 min (exercise session) or ...
Chen Tsung-I - - 2011
We investigated whether exercise provides beneficial effects to attenuate intermittent hypoxia (IH)-induced myocardial apoptosis. Male Sprague-Dawley rats were randomly assigned to four groups: control (CON), IH, exercise (EXE) or IH interspersed with EXE (IHEXE). IH rats were exposed to repetitive hypoxia-reoxygenation cycles (30 s of 5% O(2); 45 s of 21% O(2), ...
Ando Soichi - - 2011
This study tested whether cerebral oxygenation affects cognitive function during exercise. We measured reaction times (RT) of 12 participants while they performed a modified version of the Eriksen flanker task, at rest and while cycling. In the exercise condition, participants performed the cognitive task at rest and while cycling at ...
Smith J - - 2011
BACKGROUND AND AIMS: Atenolol is a beta-1 adrenergic antagonist commonly prescribed for the treatment of systemic hypertension or coronary artery disease yet its use in individuals with type 2 diabetes mellitus (T2DM) is controversial due to potentially negative side effects on insulin resistance. Non-esterified fatty acid (NEFA) metabolism is altered ...
Ogoh Shigehiko S Department of Biomedical Engineering, Toyo University, 2100 Kujirai, Kawagoe-shi, Saitama 350-8585, Japan. - - 2011
Limited information is available regarding cerebral vascular responses to dynamic exercise in older adults. We examined the influence of age on exercise-induced changes in the critical closing pressure (CCP) of the cerebral vasculature. Twelve young and twelve older subjects performed two bouts of steady-state cycling at low and moderate intensities ...
Thomasson R - - 2011
The aim of the study was to evaluate the effects of short-term glucocorticoid treatment on plasma amino acids, free fatty acids, blood glucose, and several hormones in healthy volunteers performing long-lasting exercise. 9 young female subjects exercised 2 h at 50-55% VO (2) max twice, once after placebo (Pla) ingestion ...
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