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Results 501 - 550 of 1519
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Skurvydas Albertas - - 2011
The primary aim of the present study was to examine the effect of eccentric exercise-induced (100 submaximal eccentric contractions at an angular velocity of 60° s(-1), with 20-s rest intervals) muscle damage on peripheral and central fatigue of quadriceps muscle in well-trained long-distance runners, sprint runners, volleyball players, and untrained ...
Tlougan Brook E - - 2011
Participation in ice-skating sports, particularly figure skating, ice hockey and speed skating, has increased in recent years. Competitive athletes in these sports experience a range of dermatological injuries related to mechanical factors: exposure to cold temperatures, infectious agents and inflammation. Part I of this two part review discussed the mechanical ...
Lindberg C - - 2011
Lindberg C, Sixt C, Oldfors A. Episodes of exercise-induced dark urine and myalgia in LGMD 2I. Acta Neurol Scand: DOI: 10.1111/j.1600-0404.2011.01608.x. © 2011 John Wiley & Sons A/S. Background -  Mutations in the fukutin-related protein gene FKRP (MIM *606596) cause a form of congenital muscular dystrophy (MDC1C) and also limb girdle ...
Have L - - 2011
OBJECTIVE AND PATIENT: To report an atypical case of exercise-induced bilateral brachialis and brachioradialis rhabdomyolysis in a 25-year-old woman. Persistent focal muscle pain, atypical by its duration and intensity, even after moderate exercise, should prompt the search for rhabdomyolysis and discuss the possibility of acute compartment syndrome. MRI images can ...
Alom M M - - 2011
Regular physical exercise causes resting bradycardia. This exercise-induced resting bradycardia may be associated with exercise-induced changes in Cardiac autonomic nervous activities (CANA). Power Spectral Analysis (PSA) of Heart rate variability (HRV) is one of the most promising new techniques to quantify CANA. Regular physical exercise induced bradycardia is associated with ...
Cummings Carl - - 2011
Cranial asymmetry occurring as a result of forces that deform skull shape in the supine position is known as deformational plagiocephaly. The risk of plagiocephaly may be modified by positioning the baby on alternate days with the head to the right or the left side, and by increasing time spent ...
Tlougan Brook E - - 2011
Participation in ice-skating sports, particularly figure skating, ice hockey and speed skating, has increased in recent years. Competitive athletes in these sports experience a range of dermatological injuries related to mechanical factors: exposure to cold temperatures, infectious agents and inflammation. Part I of this two part review discussed the mechanical ...
Korivi Mallikarjuna - - 2012
Despite regular exercise benefits, acute exhaustive exercise elicits oxidative damage in liver. The present study determined the hepatoprotective properties of ginsenoside-Rg1 against exhaustive exercise-induced oxidative stress in rats. Forty rats were assigned into vehicle and ginsenoside-Rg1 groups (0.1 mg/kg bodyweight). After 10-week treatment, ten rats from each group performed exhaustive swimming. ...
Jenkins Nathan T - - 2011
We hypothesized that prior exercise would prevent postprandial lipaemia (PPL)-induced increases in intracellular reactive oxygen species (ROS) in three distinct circulating angiogenic cell (CAC) subpopulations. CD34(+), CD31(+)/CD14(-)/CD34(-), and CD31(+)/CD14(+)/CD34(-) CACs were isolated from blood samples obtained from 10 healthy men before and 4 h after ingesting a high fat meal ...
Gharib Sina A SA Center for Lung Biology, University of Washington, Seattle, WA 98109, USA. - - 2011
Asthma is a heterogeneous disease characterized by abnormal airway pathophysiology and susceptibility to different stimuli, as exemplified by a subset of patients with exercise-induced bronchoconstriction. Induced sputum provides a noninvasive method to sample airway biofluids that are enriched in proteins. We hypothesized that novel mechanisms in the pathogenesis of asthma ...
Coupe Mickael - - 2011
Whole body vibration with resistive exercise is a promising countermeasure against some weightlessness-induced dysfunctions. Objective: to study if the combination of low-magnitude whole body vibration with a resistive exercise can prevent the cardiovascular deconditioning induced by a non-strict 60-day head-down bed rest (ES-IBREP study: Earth Star International Bed Rest Experiment ...
Rangan Vikram V - - 2011
An active lifestyle is widely recognized as having a beneficial effect on cardiovascular health. However, no clear consensus exists as to whether exercise training increases overall physical activity energy expenditure (PAEE) or whether individuals participating in regular exercise compensate by reducing their off-exercise physical activity. The purpose of this study ...
Berglund Eric D - - 2011
Exercise is an effective intervention to treat fatty liver. However, the mechanism(s) that underlie exercise-induced reductions in fatty liver are unclear. Here we tested the hypothesis that exercise requires hepatic glucagon action to reduce fatty liver. C57BL/6 mice were fed high-fat diet (HFD) and assessed using magnetic resonance, biochemical, and ...
Pratali Lorenza - - 2012
Chronic mountain sickness (CMS) is a major public health problem in mountainous regions of the world. In its more advanced stages, exercise intolerance is often found, but the underlying mechanism is not known. Recent evidence indicates that exercise-induced pulmonary hypertension is markedly exaggerated in CMS. We speculated that this problem ...
Wong Yeun Ying YY Department of Pulmonology, Institute of Cardiovascular Research, VU University Medical Center, Amsterdam, The - - 2011
Impaired right ventricular (RV) myocardial blood flow (MBF) has been associated with RV dysfunction and fatal RV failure in idiopathic pulmonary hypertension during stress. MBF and O(2) extraction from myocardial capillaries (O(2) extraction fraction (OEF)) influence myocardial O(2) supply. To determine how the baseline RV OEF affects the amount of ...
Ooi Foong-Kiew - - 2011
The effects of deconditioning on exercise-induced bone gains in rats were investigated in 12-week-old female WKY rats performing a standard jumping exercise regimen for either 8, 12 or 24 weeks, followed by sedentary periods of either 24, 12 or 0 weeks, respectively. Age-matched controls received no exercise over the same period. At ...
Miladi-Gorji Hossein - - 2011
Chronic exposure to opiates impairs spatial learning and memory. Given the well-known beneficial effects of voluntary exercise on cognitive functions, we investigated whether voluntary exercise would ameliorate the cognitive deficits that are induced by morphine dependence. If an effect of exercise was observed, we aimed to investigate the possible role ...
Krafczyk Michael A - - 2011
Exercise-induced bronchoconstriction describes the narrowing of the airway that occurs with exercise. More than 10 percent of the general population and up to 90 percent of persons previously diagnosed with asthma have exercise-induced bronchoconstriction. Common symptoms include coughing, wheezing, and chest tightness with exercise; however, many athletes will present with ...
Bailey Damian M - - 2011
The present study examined if dynamic cerebral autoregulation (dCA) and blood brain-barrier (BBB) function would become compromised as a result of exercise-induced oxidative-nitrosative stress. Eight healthy males were examined at rest and after an incremental bout of semi-recumbent cycling exercise to exhaustion. Changes in a dynamic cerebral autoregulation index (ARI) ...
Tanaka Mamoru - - 2011
Background: ω-5 Gliadin is known as a major allergen in wheat-dependent exercise-induced anaphylaxis. The characteristics that make ω-5 gliadin an allergen remain unclear. Methods: Mice were sensitized by means of intraperitoneal injection of gliadin fractions together with the adjuvant alum. Anaphylactic responses were assessed by measuring body temperature and voluntary ...
Barrientos Ruth M RM Department of Psychology and Neuroscience, University of Colorado at Boulder, Boulder, Colorado 80309, USA. - - 2011
We have previously found that healthy aged rats are more likely to suffer profound memory impairments following a severe bacterial infection than are younger adult rats. Such a peripheral challenge is capable of producing a neuroinflammatory response, and in the aged brain this response is exaggerated and prolonged. Normal aging ...
Petersen A C - - 2011
Aim:  Production of reactive oxygen species (ROS) in skeletal muscle is markedly increased during exercise and may be essential for exercise adaptation. We therefore investigated the effects of infusion with the antioxidant N-acetylcysteine (NAC) on exercise-induced activation of signalling pathways and genes involved in exercise adaptation in human skeletal muscle. ...
Lancellotti Patrizio - - 2011
Left ventricular dyssynchrony (LVD) is common in heart failure patients with LV systolic dysfunction. Contrary to what it could be expected, LVD is not a stable phenomenon. Various conditions (inducible ischemia, exercise, drug administration) may significantly alter the presence and the magnitude of LVD, which could per se modulate response ...
Schelin Adriane B - - 2011
We show that common circulatory diseases, such as stenoses and aneurysms, generate chaotic advection of blood particles. This phenomenon has major consequences on the way the biochemical particles behave. Chaotic advection leads to a peculiar filamentary particle distribution, which in turn creates a favorable environment for particle reactions. Furthermore, we ...
Mota Bibiana Castagna - - 2011
Although the favorable effects of physical exercise in neurorehabilitation after traumatic brain injury (TBI) are well known, detailed pathologic and functional alterations exerted by previous physical exercise on post-traumatic cerebral inflammation have been limited. In the present study, it is showed that fluid percussion brain injury (FPI) induced motor function ...
Hortobágyi Tibor T Department of Exercise and Sport Science, East Carolina University, Greenville, NC 27858, USA. - - 2011
Chronic unimanual motor practice increases the motor output not only in the trained but also in the nonexercised homologous muscle in the opposite limb. We examined the hypothesis that adaptations in motor cortical excitability of the nontrained primary motor cortex (iM1) and in interhemispheric inhibition from the trained to the ...
Weder Max M - - 2011
Exercise is rarely limited by pulmonary causes in normal individuals. Cardiac output and peripheral muscle disease are usually the limiting factors. Although minute ventilation rises steeply during exercise, normal individuals maintain a substantial breathing reserve. Exercise in patients, however, can be limited by pulmonary disorders. Acute pulmonary causes (exercise-induced bronchospasm, ...
Mattsson C Mikael - - 2011
: The present study investigates the adaptation of the central circulation to ultraendurance exercise, including the relative contributions of changes in stroke volume (SV) and arteriovenous oxygen difference to the increased oxygen pulse (V˙O2/HR). : We evaluated subjects undergoing 12 h of mixed exercise at controlled intensity (n = 8) ...
Miranda-Vilela Ana Luisa - - 2011
Physical training induces beneficial adaptations, but exhausting exercise increases reactive oxygen species, which can cause muscular injuries with consequent inflammatory processes, implying jeopardized performance and possibly overtraining. Acute strenuous exercise almost certainly exceeds the benefits of physical activity; it can compromise performance and may contribute to increased future risk of ...
Kiilerich Kristian - - 2011
To test the hypothesis that physical inactivity impairs the exercise-induced modulation of pyruvate dehydrogenase (PDH), six healthy normally physically active male subjects completed 7 days of bed rest. Before and immediately after the bed rest, the subjects completed an oral glucose tolerance test (OGTT) and a one-legged knee extensor exercise ...
Shim Chi Young - - 2011
Objective To investigate clinical outcomes of exercise-induced pulmonary hypertension (PH) and implications of an increase in left ventricular (LV) filling pressure during exercise in subjects with preserved LV ejection fraction. Design Longitudinal follow-up study. Setting Subjects who were referred for diastolic stress echocardiography. Patients and methods The ratio of transmitral ...
Ko Il Gyu - - 2011
Stress urinary incontinence (SUI) commonly occurs in women, and it has an enormous impact on quality of life. Surgery, drugs, and exercise have been recommended for the treatment of this disease. Among these, exercise is known to be effective for the relief of symptoms of SUI; however, the efficacy and ...
Ranchord Anil M - - 2011
BACKGROUND: International guidelines recommend the use of oxygen for angina, based on Level C evidence. We aimed to determine whether high concentration oxygen influences the time to exercise-induced ischaemia or angina in patients with stable ischaemic heart disease (IHD). METHODS: 22 subjects with IHD and a positive exercise treadmill test ...
Dekerle J - - 2011
It remains uncertain as how the reduction in systemic oxygen transport limits high-intensity exercise tolerance. 11 participants (5 males; age 35 ± 10 years; peak [Formula: see text] 3.5 ± 0.4 L min(-1)) performed cycle ergometry to the limit of tolerance: (1) a ramp test to determine ventilatory threshold (VT) and peak [Formula: see text]; (2) three ...
Palstra Arjan P - - 2011
The onset of downstream migration of European eels is accompanied by a cessation of feeding and the start of sexual maturation which stresses the link between metabolism and sexual maturation, also suggesting an important role for exercise. Exercise has been tested with eels in swim tunnels and was found to ...
Mao Tso-Yen - - 2011
Despite enhancing cardiopulmonary and muscular fitness, the effect of hypoxic exercise training (HE) on hemorheological regulation remains unclear. This study investigates how HE modulates erythrocyte rheological properties and further explores the underlying mechanisms in the hemorheological alterations. Twenty-four sedentary males were randomly divided into hypoxic (HE; n = 12) and ...
Smart N A NA Bond University, Faculty of Health Science and Medicine, Varsity Lakes, Robina, Queensland 4229, Australia. - - 2012
Brain natriuretic peptide (BNP) predicts exercise performance and exercise training may modulate BNP and its N-terminal portion (NT-pro-BNP), we therefore conducted an individual patient analysis of exercise training effects on BNP and NT-pro-BNP. To use an individual patient meta-analysis to relate changes in BNP, NT-pro-BNP, and peak VO(2); to link ...
Klusmann Verena - - 2011
In this study we addressed the subjective benefits of activity interventions that were designed to improve cognitive fitness in old age. Two hundred and fifty-nine women (aged 70-93 years) were randomized to participate in an exercise or a computer course or a control condition for 6 months. Subjective ratings of ...
Church Tim - - 2011
The risk of developing both metabolic syndrome and type 2 diabetes mellitus (T2DM) is inversely associated with regular exercise training (ET). Excess weight is also strongly associated with increased risk of both metabolic syndrome and T2DM. There is strong evidence that even a moderate amount of weight loss achieved through ...
Armstrong Rachel G - - 2011
As heart-rate variability (HRV) is under evaluation in clinical applications, the authors sought to better define the interdependent impact of age, maximal exercise, and diurnal variation under physiologic conditions. The authors evaluated the diurnal changes in HRV 24-h pre- and post-maximal aerobic exercise testing to exhaustion in young (19-25 yrs, ...
Hew-Butler Tamara - - 2011
To evaluate changes in both the N-terminal (arginine vasopressin; AVP) and C-terminal (copeptin) fragments of the vasopressin prohormone before, during, and after an ultramarathon race and to assess vasopressin and copeptin concentrations in runners with and without hyponatremia. Observational study. Three trials (2 sodium balance and 1 hyponatremia treatment) in ...
Kipps Alaina K - - 2011
Patients with repaired tetralogy of Fallot have a reduced percentage of predicted peak oxygen consumption (VO(2)) and percentage of oxygen pulse (O(2)P%) compared to healthy controls. Because data regarding the progression of exercise intolerance in these patients is limited, we sought to analyze the serial exercise data from patients with ...
Legrand Fabien D - - 2011
In the present controlled experiment, we examine the influence of opposite states of mind (the "telic" vs. "paratelic" state) on mood response to a 15min long walk at self-selected pace. Fifty-five first-year students were randomized to a telic (n = 22) or paratelic (n = 33) motivational environment. These opposed ...
Bronas Ulf Gunnar - - 2011
Supervised treadmill-walking exercise programs have been proven to be a highly effective in improving walking distance in peripheral arterial disease (PAD) patients with lifestyle-limiting claudication. Limited information is available on the contributions of central cardiorespiratory functions for improving these patients' walking capacity with exercise training. This study randomized 28 participants ...
Wagner Peter D - - 2012
Exercise is the example par excellence of the body functioning as a physiological system. Conventionally we think of the O(2) transport process as a major manifestation of that system linking and integrating pulmonary, cardiovascular, hematological and skeletal muscular contributions to the task of getting O(2) from the air to the ...
Theurel J - - 2011
The present study aimed to test the influence of the pedalling technique on the occurrence of muscular fatigue and on the energetic demand during prolonged constant-load cycling exercise. Subjects performed two prolonged (45 min) cycling sessions at constant intensity (75% of maximal aerobic power). In a random order, participants cycled either ...
Theodorou Anastasios A - - 2011
BACKGROUND: It was recently reported that antioxidant supplementation decreases training efficiency and prevents cellular adaptations to chronic exercise. OBJECTIVE: This study aimed to investigate the effects of vitamin C and vitamin E supplementation on muscle performance, blood and muscle redox status biomarkers, and hemolysis in trained and untrained men after ...
Lima Aluísio Henrique Rodrigues de Andrade - - 2011
BACKGROUND: Cardiac sympathovagal balance is altered after resistance exercise. However, the impact of the characteristics of resistance training in this response remains unclear. OBJECTIVE: Analyze the acute effect of resistance exercise intensity for trunk and upper limbs in cardiac autonomic modulation after exercise. METHODS: Fifteen young men performed three experimental ...
Aizawa Katsuji - - 2011
PURPOSE:: Endurance training improves skeletal muscular function including energy metabolism and structure. Sex steroid hormones partly contribute to the exercise-induced muscular adaptations. Recently, we demonstrated that skeletal muscle containes steroidgenic converting enzymes to synthesize sex steroid hormones and an acute endurance exercise activates local steroidogenesis in skeletal muscle. However, whether ...
McTaggart-Cowan Helen - - 2011
It has been recommended that economic evaluation of healthcare technologies should use values for hypothetical health states elicited from the general population rather than patients. The drawback is the general population may not consider the possibility of adapting to the impaired state. This study explored the extent to which the ...
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