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Effects of glutamine and alanine supplementation on muscle fatigue parameters of rats submitted to resistance training.

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Although glutamine and alanine have properties that could delay fatigue, recent evidence showed that these amino acids impaired central fatigue markers. Nevertheless, the effect of this intervention on muscle fatigue is unknown. The aim of this study was to investigate the effects of

May peripheral and central fatigue be correlated? Can we monitor them by means of clinical laboratory tools?

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BACKGROUND A laboratory-based model which links regional and central fatigue during physical exercise has not yet developed. Today we can assay the oxypurines, a specific and sensible marker of muscle cell-energy exhaustion during strenuous physical exercise, thus allowing us to insight in

Investigation of anti-fatigue effect and simultaneous determination of eight nucleosides in different parts of velvet antler in red deer and sika deer.

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Velvet antler (VA) is crucial and precious nourishment in China and some countries in Southeast Asia. It has several pharmacological effects such as alleviating fatigue and strengthening the body. The incidence of fatigue syndrome has increased gradually. Thus, VA can be a potential source of

Free radicals in hypoxic rat diaphragm contractility: no role for xanthine oxidase.

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Recent evidence indicates that hypoxia enhances the generation of oxidants. Little is known about the role of free radicals in contractility of the rat diaphragm during hypoxia. We hypothesized that antioxidants improve contractility of the hypoxic rat diaphragm and that xanthine oxidase (XO) is an

Free radicals may contribute to oxidative skeletal muscle fatigue.

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We used mouse soleus in vitro (n = 30) and canine gastrocnemius-plantaris preparations (n = 20) pump-perfused at the animal's blood pressure to establish if free radicals contribute to fatigue in oxidative skeletal muscle. The soleus from each leg contracted for 200 ms (70 Hz) once every minute for

Muscle adenine nucleotide degradation during submaximal treadmill exercise to fatigue.

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The aim was to investigate metabolic response in muscle during submaximal treadmill exercise to fatigue, with a special emphasis on adenine nucleotide degradation products such as inosine monophosphate (IMP) in muscle and hypoxanthine, xanthine and uric acid in plasma. Five Standardbred trotters

[Effect of acupuncture on serum malonaldehyde content, superoxide dismutase and glutathione peroxidase activity in chronic fatigue syndrome rats].

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OBJECTIVE To study the effect of acupuncture on blood oxygen free radical metabolism in rats with chronic fatigue syndrome (CFS). METHODS Thirty male SD rats were randomly divided into control group (n = 10), model group (n = 10) and acupuncture group (n = 10). CFS model was established by repeated

[Effects of transcutaneous electric acupoint stimulation on plasma SOD and MDA in rats with sports fatigue].

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OBJECTIVE To observe the effect of transcutaneous electric acupoint stimulation (TEAS) on plasma superoxide dismutase (SOD) and malondialdehyde (MDA) in rats with sports fatigue so as to explore its mechanisms in resisting exercise-induced fatigue. METHODS Twenty-seven male adult SD rats were

[Effects of electric mildly-warmed needle of inner mongolian medicine on liver MDA and GSH content, GSH-Px and SOD activity in fatigue rats].

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OBJECTIVE To investigate the effect of electric mildly-warmed needle of inner Mongolian medicine on changes of free radical metabolism in the liver tissue of rats with fatigue. METHODS A total of 33 male SD rats were evenly randomized into control, model and electro-mildly-warmed needle (EMWN)

Modulation of the axon-reflex response to local heat by reactive oxygen species in subjects with chronic fatigue syndrome.

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Local cutaneous heating causes vasodilation as an initial first peak, a nadir, and increase to plateau. Reactive oxygen species (ROS) modulate the heat plateau in healthy controls. The initial peak, due to C-fiber nociceptor-mediated axon reflexes, is blunted with local anesthetics and may serve as

Anti-Fatigue, Antioxidation, and Anti-Inflammatory Effects of Eucalyptus Oil Aromatherapy in Swimming-Exercised Rats.

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Eucalyptus globulus possesses important pharmacological activities, including antioxidant and anti-inflammatory effects. We investigated the anti-fatigue, antioxidant, and anti-inflammatory effects of eucalyptus essential oil after swimming exercise using an animal model. Male Sprague– Dawley rats

Effect of quercetin supplementation on repeated-sprint performance, xanthine oxidase activity, and inflammation.

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Maintenance of repeated-sprint performance is a goal during team-sport competition such as soccer. Quercetin has been shown to be an adenosine-receptor antagonist and may reduce oxidative stress via inhibition of the enzyme xanthine oxidase (XO). The purpose of the study was to determine the effect

[Effect of acupuncture intervention on learning-memory ability and cerebral superoxide dismutase activity and malonaldehyde concentration in chronic fatigue syndrome rats].

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OBJECTIVE To observe the effect of acupuncture intervention on learning-memory ability and cerebral superoxide dismutase (SOD) activity and malonaldehyde (MDA) content in chronic fatigure syndrome (CFS) rats so as to reveal its mechanism underlying improvement of clinical CFS. METHODS Thirty-six

Effect of torbafylline on muscle blood flow, performance, and capillary supply in ischemic muscles subjected to varying levels of activity.

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Torbafylline, a novel xanthine derivative, was given to rats by gavage (2 x 25 mg.kg-1.day-1, morning and evening) to study its effect upon fast muscles (tibialis anterior and extensor digitorum longus) made ischemic by unilateral ligation of the common iliac artery and subjected to two types of

Muscle anaerobic response to a maximal treadmill exercise test in Standardbred trotters.

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The purpose of this study was to develop a standardised maximal treadmill exercise test performed until fatigue in order to find reproducible markers for anaerobic metabolism, specifically adenine nucleotide degradation. Six Standardbred trotters performed an incremental maximal treadmill exercise

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