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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 F Washington University School of Medicine, St Louis, MO 63110, USA; Department of Nutrition and Dietetics, Harokopio University, Athens 17671, - - 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 ...
Duzova Halil H Department of Physiology, Inonu University Faculty of Medicine , 44280 Malatya, Turkey - - 2009
In this study, we aimed to compare the effects of a single bout of acute moderate and strenuous running exercise on the production of interleukin-17 (IL-17), interleukin-6 (IL-6), interleukin-1 receptor antagonist (IL-1ra) and inflammatory response of skeletal muscles in regularly trained rats. Eight week old rats were trained by treadmill ...
Huuskonen Antti A Institute of Biomedicine, Physiology, University of Kuopio , - - 2009
Skeletal muscle-derived interleukin-6 (IL-6) is a pleiotropic cytokine which regulates body metabolism during strenuous physical exercise. The effect of a potentially functional single nucleotide polymorphism (SNP) -174G/C of the IL6 gene (rs1800795) promoter was examined on maximal oxygen uptake (VO2max), body mass index (BMI) and plasma IL-6 levels in response ...
Farhangimaleki Negin N Physical Education & Sport science Department, Islamic Azad University , Tabriz Branch, - - 2009
The aim of this study was to investigate the effect of two different tapering period lengths on the concentration of plasma interleukin- 6 (IL-6), interleukin (IL-1β) and tumor necrosis factor-α (TNF-α) and performance in elite male cyclists. To this end, after completing 8 weeks progressive endurance exercise, twenty four high-level ...
Malek Moh H - - 2008
The purposes of this study were to 1) compare the patterns of responses for plasma ammonia concentration ([NH3]) during moderate- vs. heavy-intensity cycle ergometry, and 2) examine the relationship between the V O2 slow component (V O 2SC) and plasma [NH3]. Thirteen healthy, untrained men (mean +/- SEM age = ...
Blomstrand Eva - - 2009
Eight male subjects performed leg press exercise, 4 x 10 repetitions at 80% of their maximum. Venous blood samples were taken before, during exercise and repeatedly during 2 h of recovery. From four subjects, biopsies were taken from the vastus lateralis muscle prior to, immediately after and following one and ...
Hew-Butler T - - 2010
The parallel response of sweat rate and urine production to changes in plasma osmolality and volume support a role for arginine vasopressin (AVP) as the main endocrine regulator of both excretions. A maximal test to exhaustion and a steady-state run on a motorised treadmill were both completed by 10 moderately ...
Hew-Butler Tamara - - 2008
Exercise-associated hyponatremia (EAH) is a potentially fatal fluid imbalance largely resulting from sustained fluid intake beyond the capacity for fluid excretion during endurance exercise. Common symptoms include vomiting, confusion, altered mental status, and seizures; however, these symptoms can also be seen with hypernatremic encephalopathy, making measurement of plasma sodium concentration ...
Stachenfeld Nina S - - 2008
Sweating during exercise, especially during exercise in the heat, leads to sodium and water losses, and the quantity of these losses depends upon the intensity and duration of the activity, genetic predisposition and conditioning of the individual, and environmental factors. In athletes, adequate sodium intake is necessary to maintain fluid ...
Appenrodt Beate - - 2008
BACKGROUND/AIMS: Large-volume paracentesis in patients with cirrhosis and ascites induces arterial vasodilatation and decreases effective arterial blood volume, termed paracentesis-induced circulatory dysfunction (PICD), which can be prevented by costly intravenous albumin. Vasoconstrictors, e.g. terlipressin, may also prevent PICD. The aim was to compare the less expensive vasoconstrictor midodrine, an alpha-adrenoceptor ...
Hew-Butler Tamara - - 2008
CONTEXT: Although the primary cause of exercise-associated hyponatremia (EAH) is relative overconsumption of fluids beyond the kidneys' ability to excrete excess fluid, the mechanisms limiting maximum renal excretory ability during exercise remain to be elucidated. OBJECTIVE: The objective of the study was to: 1) perform a comprehensive evaluation of the ...
Bracken Richard M - - 2009
Catecholamines (noradrenaline, NA; adrenaline, AD; dopamine, DA) influence the metabolic and cardiovascular responses to exercise. However, changes in catecholamine metabolism during exercise are unclear. Plasma normetanephrine (NMET), metanephrine (MET) and catecholamine responses to a laboratory-based model of games-type exercise were examined. Twelve healthy men completed a resting control trial and ...
Lucas, Samuel John Edwin
Little is known about the strain and consequences of very prolonged and sustained exercise lasting multiple days. This thesis comprises two multi-day exercise field studies and a 24-h, controlled-trial field/laboratory study. The field studies were undertaken using international adventure races (2003 and 2004 Southern Traverses: 86-120 h) to profile exercise ...
Ozdemir Caglar C Department of Forensic Medicine, Erciyes University Medical Faculty , Kayseri, - - 2008
Regular physical exercise is recommended by the medical community, because it offers the potential to reduce the incidence of coronary events. On the other hand, vigorous exertion may act as a trigger of acute myocardial infarction and sudden cardiac death in susceptible individuals. Death during sports activities differs among sports ...
McMorris T - - 2008
The purpose of the study was to examine the usage of norepinephrine (NE) and dopamine (DA) in the brain when exercising while simultaneously undertaking cognitive tests. Plasma concentrations of the NE metabolite 3-methoxy 4-hydroxyphenylglycol (MHPG) and the DA metabolite homovanillic acid (HVA) showed a linear increase from rest to exercising ...
Højbjerre Lise - - 2007
OBJECTIVE: We studied how an acute bout of exercise influences expression and concentration of adiponectin and regulators of adiponectin in adipose tissue and plasma. DESIGN AND METHODS: Eight overweight and eight lean males were examined by large-pore microdialysis in s.c. abdominal adipose tissue (SCAAT) and had arterialized blood sampled. On ...
Nielsen Vance G - - 2007
BACKGROUND: A decrease in reaction time (R; seconds) has been considered a thrombelastographic hallmark of hypercoagulability. However, the cause of changes in R has been influenced by the method of activation (e.g., celite) and the clinical/laboratory setting (e.g., hemodilution). Although antithrombin deficiency has been implicated as a cause of decreased ...
Sims Stacy T - - 2007
This study was conducted during the high-hormone phase of both natural and oral contraceptive pill (OCP)-mediated menstrual cycles to determine whether preexercise ingestion of a concentrated sodium beverage would increase plasma volume (PV), reduce physiological strain, and aid endurance of moderately trained women cycling in warm conditions. Thirteen trained cyclists ...
Tsuchida Takaya - - 2007
Past studies suggested that plasma norepinephrine during exercise originates in sympathetic nerve endings and that the main origin differs among pathophysiological conditions. This study investigated the most important site of sympathetic terminals as an origin of plasma norepinephrine during exercise in patients with heart failure using (123)I- metaiodobenzylguanidine (MIBG) scintigraphy. ...
Dostalova Ivana - - 2007
Plasma leptin concentrations are markedly reduced in malnourished patients with anorexia nervosa (AN). Whether the long-term underweight and low-fat stores affect the leptin response to exercise remains unknown. We investigated the effect of 45-minute cycle ergometer exercise (2 W kg-1 of lean body mass [LBM]) on plasma leptin, norepinephrine (NE), ...
Fletcher James P - - 2007
Ankle sprains are among the most common injuries incurred by participants in athletics. Conservative management of the patient after an ankle sprain includes a comprehensive rehabilitation program of which the resistance exercises are a part and are frequently advised by the clinician, many times as part of a home exercise ...
Serráo Fábio Viadanna FV Department of Physical Therapy - Federal University of São Carlos , São Carlos, SP, Brazil - - 2007
The objectives of this study were to propose a model for exercise- induced muscle injury by way of a maximal eccentric isokinetic exercise at low angular speed, and assess the time course of functional recovery of the injured quadriceps femoris muscle from the maximal voluntary contraction (MVC) torque and electrical ...
Volpe Stella Lucia SL Division of Biobehavioral and Health Sciences, University of Pennsylvania, School of Nursing, Philadelphia, PA 19104-6096, USA. - - 2007
To examine the effect of acute exhaustive exercise versus rest on short-term zinc kinetics in men. Crossover design, wherein all subjects were their own control. University setting, where subjects were free living. 12 healthy, sedentary men, 25-35 years of age. (70)Zn was infused 10 min after exercise or at rest. ...
Zavorsky Gerald S - - 2007
The purpose of this study was to determine the electrolyte concentration changes in arterial plasma from high-intensity repeated bouts of cycling exercise in well-trained females and to determine the relationships between arterial plasma lactate, potassium (K+), bicarbonate (HCO3(-)), and pH with minute ventilation. Fourteen female subjects (mean age = 27 ...
Moesgaard S G - - 2007
This study examines how systemic biomarkers of endothelial function and nitric oxide metabolism are affected by exercise in dogs. Furthermore, breed variation and white-coat effect have been tested by sampling three different dog breeds both in their home and in a clinical setting. Short-term exercise increased plasma nitrate and nitrite ...
Khan Munir - - 2006
Baseline metal ion levels are elevated in patients with metal-on-metal (MOM) hip arthroplasty. Interpretation of baseline levels is difficult as measurements are influenced by wear, corrosion, and metal ion release from stored metal in the body. Schmalzried et al. demonstrated that "wear is the function of use, not time." The ...
Hess T M - - 2006
REASONS FOR PERFORMING STUDY: Electrolyte mixtures given to counter sweat loss usually contain abundant potassium. However, increases in plasma [K+] occur with exercise and supplementation may further increase plasma levels, potentially increasing the risk of neuromuscular hyperexcitability and development of adverse clinical sequellae. This proposition requires study. OBJECTIVES: To compare ...
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