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Results 551 - 600 of 1428
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Sato Kohei - - 2010
The purpose of the present study was to elucidate the effect of unilateral lower limb suspension (ULLS) on aerobic capacity during one-legged cycle exercise and whether the change in aerobic exercise capacity after ULLS with or without intensive interval training is related to the change in skeletal muscle volume. There ...
Majerczak J - - 2010
In the present study fifteen male subjects (age: 22.7 ± 0.5 years; BMI: 23.5 ± 0.6 kg x m⁻²; VO₂(max) 46.0 ± 1.0 mL x kg⁻¹ x min⁻¹) performed 5 week moderate intensity endurance training. The training resulted in a significant increase in maximal oxygen uptake (VO₂(max)) (P=0.048) and power ...
Bean Jonathan F - - 2010
From among physiological attributes commonly targeted in rehabilitation, to identify those in which changes led to clinically meaningful differences (CMDs) in mobility outcomes. Secondary analysis of data collected for a randomized controlled trial of exercise using binary outcomes defined by recording a large CMD (Short Physical Performance Battery (SPPB)=1 unit; ...
Kahn Susan R - - 2011
Exercise training may have the potential to improve post-thrombotic syndrome, a frequent, chronic complication of deep venous thrombosis. We conducted a randomized controlled two-centre pilot trial to assess the feasibility of a multicentre-based evaluation of a six-month exercise training program to treat post-thrombotic syndrome and to obtain preliminary data on ...
Serteyn D - - 2010
Intense physical exercise can induce the degranulation of neutrophils leading to an increase in plasma concentration of the neutrophil marker enzymes myeloperoxidase (MPO) and elastase (ELT). These enzymes have pro-oxidative and pro-inflammatory properties and may play a role in the exercised-induced muscular damage. To measure MPO and ELT concentrations in ...
Bittencourt Maria F Q P - - 2010
Unlike humans, who communicate in frequency bands between 250 Hz and 6 kHz, rats can communicate in frequencies above 18 kHz. Their vocalization types depend on the context and are normally associated to subjective or emotional states. It was reported significant vocal changes due to administration of replacement testosterone in ...
Bailey Stephen J - - 2011
We investigated the influence of the antioxidant N-acetylcysteine (NAC) on plasma nitrite concentration ([NO₂⁻]), pulmonary oxygen uptake (V(O₂)) kinetics and exercise tolerance. Eight males completed 'step' moderate- and severe-intensity cycle exercise tests following infusion of either NAC (125 mg kg⁻¹ h⁻¹ for 15 min followed by 25 mg kg⁻¹ h⁻¹ ...
Nikolaidis Michalis G - - 2011
The level of F₂-isoprostanes (F₂-IsoP) in blood or urine is widely regarded as the reference marker for the assessment of oxidative stress. As a result, nowadays, F₂-IsoP is the most frequently measured oxidative stress marker. Nevertheless, determining F₂-IsoP is a challenging task and the measurement is neither free of mishaps ...
Garcia Frederico Duarte - - 2011
Abnormal vasopressin (VP) and oxytocin (OT) signaling may contribute to the altered activity of the hypothalamo-pituitary-adrenal (HPA) axis in major depression; however, the underlying mechanisms remain uncertain. This study characterized plasma levels and affinities of OT- and VP-reactive autoantibodies (autoAbs) in relation to disease severity and plasma cortisol response to ...
Afshar R - - 2010
Physical function limitation is a common disorder in chronic hemodialysis (HD) patients, relating to increased morbidity and mortality. The aim of this study was to determine the effects of aerobic and resistance trainings on blood lipids and inflammation status in HD patients. Out of 30 volunteer males who had been ...
Westermann C M - - 2011
The objective of this study is to assess the influence of acute exercise, training and intensified training on the plasma amino acid profile. In a 32-week longitudinal study using 10 Standardbred horses, training was divided into four phases, including a phase of intensified training for five horses. At the end ...
Wakshlag J J - - 2010
C-reactive protein (CRP) and cardiac troponin I (cTnI) are biomarkers of systemic inflammation and cardiac damage, respectively. To investigate the effects of short-duration high-intensity exercise on plasma cTnI and serum CRP concentrations in sprint racing sled dogs. Twenty-two Alaskan sled dogs of 2 different teams participating in a 2-day racing ...
Korkiakangas Eveliina - - 2011
Type 2 diabetes can be prevented by lifestyle changes such as sufficient level of physical activity. The number of persons at high risk of or diagnosed with type 2 diabetes is increasing all over the world. In order to prevent type 2 diabetes and develop exercise counselling, more studies on ...
Lopane Giovanna - - 2010
The aim of the study was to investigate the potential effect of short, moderate intensity (≤70% maximum heart rate) cyclette exercise on levodopa (LD)/dopa decarboxylase inhibitor bioavailability and motor response in a subgroup of Parkinson disease (PD) patients presenting a moderate-to-severe delay in fasting morning LD dose absorption and matched ...
Alves Ana - - 2010
Elite swimmers are at increased risk of asthma, which has been related to chronic effects of pool chlorine environment. However acute effects of swimming on rhinitis remain unknown. We aimed to assess the nasal response to exercise in competitive swimmers compared with competitive runners. Measurements of nasal symptoms, peak nasal ...
Thomasson R - - 2010
This study examined the relationships between plasma and saliva adrenocortical hormones in response to long-duration submaximal exercise. In nine healthy, physically active, female volunteers, blood and saliva samples were taken at rest and every 30 min during a 120-min cycling trial at 50-55% VO(2max) for cortisol and dehydroepiandrosterone (DHEA) analysis. ...
Jackson R - - 2010
We tested whether markers of systemic oxidant stress were detectable in 29 typical IPF patients, and whether these increased after low level exercise. We obtained resting plasma for measurement of amino terminal pro brain natriuretic peptide (NT-proBNP), and plasma and urine samples for isoprostanes and total nitrite. Total antioxidant capacity ...
Khamwong Peanchai - - 2011
Stretching with proprioceptive neuromuscular facilitation (PNF) is frequently used before exercise. The prophylactic effect of PNF on symptoms of muscle damage induced by eccentric exercise of the wrist extensors was examined in this study. Twenty-eight healthy males were randomly divided into the PNF group (n = 14) and the control group (n = 14). ...
Ghanbari-Niaki Abbass - - 2010
Nesfatin-1 is a recently discovered anorectic protein derived from posttranslational processing of the nucleobindin 2 (NUCB2) gene. It is expressed in adipose tissue and is also found in plasma. Nesfatin-1 expression is significantly affected by nutritional status and its actions may be involved in the inhibition of the orexigenic effect ...
Wade Charles E - - 2010
Traumatic injuries often occur to individuals while exercising. The author sought to determine whether exercise before injury resulting in hemorrhage would alter cardiovascular, metabolic, and neuroendocrine responses. Fifteen chronically instrumented splenectomized immature female swine were trained to run on a treadmill at 70% of maximum heart rate for 60 min. ...
Atamaniuk Johanna - - 2010
The present study aimed to investigate the acute effects of a single bout of high-intensive strength training on the production of cell-free plasma DNA (cf-DNA), as well as on the degradation of purine nucleotides as assessed by the concentration of xanthine (XA) and hypoxanthine (HX) in urine and serum. Twelve ...
Hew-Butler Tamara - - 2010
The ability of the human body to regulate plasma osmolality (POsm) within a very narrow and well defined physiological range underscores the vital importance of preserving water and sodium balance at rest and during exercise. The principle endocrine regulator of whole body fluid homeostasis is the posterior pituitary hormone, arginine ...
Lewis Gregory D GD Cardiology Division and Cardiovascular Research Center, Massachusetts General Hospital, Boston, MA 02114, USA. - - 2010
Exercise provides numerous salutary effects, but our understanding of how these occur is limited. To gain a clearer picture of exercise-induced metabolic responses, we have developed comprehensive plasma metabolite signatures by using mass spectrometry to measure >200 metabolites before and after exercise. We identified plasma indicators of glycogenolysis (glucose-6-phosphate), tricarboxylic ...
Sureda Antoni - - 2010
Exhaustive exercise induces disturbances in metabolic homeostasis which can result in amino acid catabolism and limited L-arginine availability. Oral L-citrulline supplementation raises plasma L-arginine concentration and augments NO-dependent signalling. Our aim was to evaluate the effects of diet supplementation with L-citrulline-malate prior to intense exercise on the metabolic handle of ...
Zouhal H - - 2010
The aim of this study was to investigate plasma catecholamine [adrenaline (A) and noradrenaline (NA)] concentrations at rest and in response to maximal exercise in three different groups of adolescent girls. According to their body mass index, 34 adolescent girls aged 15-16 years were divided into three groups: a normal ...
Dreissigacker Ulrike - - 2010
Several studies suggest that exercise is associated with elevated oxidative stress which diminishes NO bioavailability. The aim of the present study was to investigate a potential link between NO synthesis and bioavailability and oxidative stress in the circulation of subjects performing high-intensive endurance exercise. Twenty-two male healthy subjects cycled at ...
Khaustova S A - - 2010
The dynamics of salivary hydrocortisone during exercise depends on the professional status of the athlete. Hydrocortisone concentrations increase and those of secretory IgA decrease significantly during short-term highly intense exercise. Presumably, basal serum hydrocortisone level is the key factor in restoration of the secretory IgA concentration after exercise by inhibition ...
Miranda-Vilela Ana L - - 2010
Physical training induces beneficial adaptation, whereas exhaustive exercises increase reactive oxygen-species generation, thereby causing oxidative damage in plasma and erythrocytes, fractions susceptible to lipid peroxidation. Pequi (Caryocar brasiliense Camb.) is a Brazilian Cerrado fruit containing a carotenoid-rich oil. The aim was to investigate the effects of pequi-oil on exercise-induced oxidative ...
Hallberg Ludvig - - 2010
Patients with major depressive disorder (MDD) may display elevated plasma levels of pro-inflammatory substances. Although the underlying mechanisms are unknown, inflammation has been proposed to play a direct role in the generation of depressive symptoms. Skeletal muscle is a potent producer of cytokines, and physical exercise has been suggested to ...
Baragli Paolo - - 2010
Four untrained standardbred horses performed a standardized exercise test on the treadmill and an automated blood collection system programmed to obtain blood samples every 15 s was used for blood collection in order to evaluate the kinetics of adrenaline and noradrenaline. The highest average values obtained for adrenaline and noradrenaline ...
El-Sayed Mahmoud S - - 2010
To ascertain the effects of environmental temperature on blood rheology, ten subjects performed two exercise trials, in random order, at approximately 60% VO(2) max for 45-min. One trial was conducted in thermoneutral environment (20 ± 1°C), while the other was performed in hot dry condition (36 ± 1°C). Venous blood ...
Gariépy Jean-François - - 2010
Respiration is a vital motor activity requiring fine-tuning to adjust to metabolic changes. For instance, respiration increases in association with exercise. In this chapter, we review the mechanisms underlying respiratory changes during exercise. Three specific hypotheses were proposed. First, the chemoreception hypothesis suggests that chemoreceptors located centrally or peripherally modify ...
Cruzat Vinicius Fernandes - - 2010
In this study, we investigated the effect of the supplementation with the dipeptide L-alanyl-L-glutamine (DIP) and a solution containing L-glutamine and L-alanine on plasma levels markers of muscle damage and levels of pro-inflammatory cytokines and glutamine metabolism in rats submitted to prolonged exercise. Rats were submitted to sessions of swim ...
Cao Vi - - 2010
The purpose of this study was to explore the perspectives of caregivers of persons with stroke with respect to their own physical activity. A qualitative, descriptive approach was used to study 10 caregivers of persons with stroke, recruited from a stroke exercise class in a large urban rehabilitation facility. Caregivers ...
Deutschbein Timo - - 2010
Measurements of plasma free metanephrines have been advocated as first-line tests for phaeochromocytoma. The aim of the study was to assess the impact of potential confounding variables. Comparative study between 2008 and 2009. Hundred and eighty healthy subjects. The effects of age, BMI, gender, menstrual cycle (sampling every 2 days), ...
Levy Susan S - - 2009
While physical activity is recommended to reduce symptomology associated with multiple sclerosis (MS) little has been done to explore the potential usefulness of theoretical models of exercise behavior change in individuals with MS. Based on the success of the transtheoretical model of exercise behavior change (TTM) in the general population ...
Gillingham Melanie B - - 2009
Chronic complications observed in patients with long-chain 3-hydroxyacylCoA dehydrogenase (LCHAD) or trifunctional protein (TFP) deficiency may be mediated by the accumulation of 3-hydroxy fatty acids or 3-hydroxyacylcarnitines. To understand variation in metabolite accumulation, their concentrations were measured by tandem mass spectrometry before and after a mixed meal and moderate intensity ...
Bracken Richard Michael - - 2010
The catecholamine metabolites normetanephrine (NMET) and metanephrine (MET) increase in response to acute exercise. However, changes in catecholamine 'nephrines' during sprint training are unclear. Therefore, the aim of this study was to examine the plasma nephrine and catecholamine (noradrenaline, NA; adrenaline, AD) responses to a laboratory-based cycle test before and ...
Bertram H C - - 2010
Nuclear magnetic resonance (NMR)-based metabonomics was applied to investigate the effects of pre-slaughter exercise stress on the plasma metabolite profile at time of slaughter. The study included a total of 40 slaughter pigs, which were exposed to one of the following treatments: No pre-slaughter stress (control treatment), pre-slaughter exercise on ...
Venta Rafael - - 2009
Several studies have assessed the effect of the physical activity on plasma homocysteine (Hcy) concentrations, although the findings have been contradictory, and the exact mechanism by which plasma Hcy concentrations varied after an acute intense exercise remains unknown. PURPOSE: We studied the effect of different acute aerobic intense exercises on ...
Coiro Vittorio - - 2009
To establish whether ethanol and/or endogenous opioids play a role in the control of arginine-vasopressin (AVP) response to physical exercise, six healthy men underwent six bicycle-ergometer tests until exhaustion [exercise control test; exercise plus ethanol (50 of 110 ml proof whiskey orally), exercise plus naloxone (2 mg injected plus 5 ...
Magkos Faidon - - 2009
Free fatty acid (FFA) availability increases several-fold during exercise and remains significantly elevated for at least 3 to 6 hours after exercise cessation. Little, however, is known regarding the duration of the postexercise rise in FFA flux. In the present study, we used stable isotope-labeled palmitate infusion to examine fatty ...
Gray S R SR Department of Sport and Exercise Sciences, Loughborough University, Loughborough, LE11 3TU, - - 2009
The formation of an interleukin-6/IL-6 receptor (IL-6/IL-6R) complex increases the biological activity and half-life of IL-6, with its response to exercise currently unknown. The aim of the present study was to determine the response of circulating levels of the IL-6/IL-6R complex to exercise. Nine healthy male participants performed 1h of ...
Shimomura Yoshiharu - - 2009
The present study was conducted to examine alterations in plasma free amino acid concentrations induced by squat exercise and branched-chain amino acid (BCAA) supplementation in young, untrained female subjects. In the morning on the exercise session day, participants ingested drinks containing either BCAA (isoleucine:leucine:valine=1:2.3:1.2) or dextrin (placebo) at 0.1 g/kg ...
McMorris Terry - - 2009
The purposes of this study were to examine the effect of acute incremental exercise on the performance of a central executive task; the responses of the sympathoadrenal system (SAS) and hypothalamic-pituitary-adrenal axis (HPAA) during exercise, while simultaneously carrying out the central executive task; and the ability of Delta plasma concentrations ...
Gonzales Joaquin U - - 2009
Shear stress is the frictional force of blood against the endothelium, a stimulus for endothelial activation and the release of von Willebrand factor (vWF). This study tested the hypothesis that the increase in shear stress associated with exercise correlates with plasma vWF. Young (n = 14, 25.7 +/- 5.4 years) ...
Hackl S - - 2009
The aim of this study was to investigate the effect of short intense exercise on plasma amino acid concentrations in trotters and to test the repeatability of plasma amino acids concentration in samples obtained on two independent days under field conditions. Plasma amino acid concentrations were analysed in blood samples ...
Kato Yushi - - 2009
We have previously reported the preventive effects of light resistance exercise (voluntary tower climbing exercise) after ingestion of a high-protein snack (HPS) on muscle loss in glucocorticoid-injected rats. However, such studies have not been performed in humans. In this cross-over study, we examined the effect of light resistance exercise after ...
Buckley Jonathan D - - 2009
Endurance exercise training can increase intestinal permeability which may contribute to the development of gastrointestinal symptoms in some athletes. Bovine colostrum (BC) supplementation reduces intestinal permeability induced by non-steroidal anti-inflammatory drugs. This study aimed to determine whether BC could also reduce intestinal permeability induced by endurance exercise. Thirty healthy adult ...
Tsekouras Yiannis E - - 2009
A single bout of prolonged aerobic exercise lowers plasma TAG (triacylglycerol) concentrations the next day by increasing the efficiency of VLDL (very-low-density lipoprotein)-TAG removal from the circulation. The effect of resistance exercise on VLDL-TAG metabolism is not known. Therefore we evaluated VLDL-TAG kinetics by using stable isotope-labelled tracers in eight ...
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