Glycogen Muscle Depletion
Mostrando 1-12 de 33 artigos, teses e dissertações.
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1. Ischemic pre and postconditioning in skeletal muscle injury produced by ischemia and reperfusion in rats
PURPOSE: To investigate the protective effects of ischemic pre and postconditioning, as well as the association of both methods, in skeletal muscle injury produced by ischemia and reperfusion in rats. METHODS: An experimental study was designed using 40 Wistar rats divided in four groups (n=10): Control - rats submitted to ischemia for 240 minutes (min) and
Acta Cir. Bras.. Publicado em: 2013-06
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2. Participação das vias de estresse oxidativo na neuroproteção mediada pelo treinamento físico em fatias cerebrais submetidas à privação de oxigênio e glicose
Ischemia leads to a variety of pathological events, including excitotoxicity, inflammation, delayed neuronal dysfunction and cell death through hyperactivation of glutamate receptors and production of free radicals, such as nitric oxide (NO). The mechanism by which cerebral excess formation of NO, which mediates neuronal death involving energy depletion, lip
Publicado em: 2011
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3. Effect of carbohydrate availability on time to exhaustion in exercise performed at two different intensities
This study examined the effects of pre-exercise carbohydrate availability on the time to exhaustion for moderate and heavy exercise. Seven men participated in a randomized order in two diet and exercise regimens each lasting 3 days with a 1-week interval for washout. The tests were performed at 50% of the difference between the first (LT1) and second (LT2) l
Brazilian Journal of Medical and Biological Research. Publicado em: 2009-05
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4. Glycogen depletion and acute branched-chain aminoacids supplementation on submaximal exercise in trained rats : implications on anaplerotic reactions / Depleção de glicogenio e suplementação aguda de aminoacidos de cadeia ramificada em ratos treinados : implicações sobre as reações anapleroticas
During submaximal exercise, muscle glycogen utilization is important. Branched-chain AminoAcids supplementation has been utilized during the past years to provide energy for muscles in this condition, through their carbon skeletons, which might generate tricarboxilic acids cycle´s intermediates (TCAI). However, this hypothesis remains controversial. On the
Publicado em: 2005
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5. Efeito da depleção prévia de glicogênio muscular sobre o tempo de exaustão em exercício de diferentes domínios fisiológicos
O objetivo do presente estudo foi avaliar o efeito da depleção prévia de glicogênio muscular sobre o tempo de exaustão em exercício abaixo e acima de do segundo limiar de lactato. Sete indivíduos foram submetidos a um teste progressivo (20 W.min-1) até a exaustão, com determinação do VO2max, do primeiro (LL1) e do segundo (LL2) limiar de lactato.
Publicado em: 2005
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6. Hydration in soccer: a review
Hydration should be considered before, during and after the exercise. This review intends to approach the main points of hydration process in soccer. The replacement of fluids during exercise is proportional to some factors, such as: exercise intensity; climatic conditions; the athlete's acclimatization; the athlete's physical conditioning; physiologic indiv
Revista Brasileira de Medicina do Esporte. Publicado em: 2003-08
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7. The non-selective innervation of muscle fibres and mixed composition of motor units in a muscle of neonatal rat.
1. Motor-unit size was measured by tension recording in neonatal (3-5 day) rat skeletal muscle (fourth deep lumbrical muscle). Each unit was then depleted of glycogen and its fibres studied in mid-belly frozen sections, by staining for glycogen (periodic acid-Schiff reagent and antibody labelling for slow myosin. The contralateral muscle acted as control, an
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8. Glycogen depletion elicited in tenuissimus intrafusal muscle fibres by stimulation of static gamma-axons in the cat.
In this study the experimental conditions used to elicit glycogen depletion in tenuissimus intrafusal muscle fibres were different from those used by Barker, Emonet-Dénand, Harker, Jami & Laporte (1976): the tenuissimus was left in situ; several (4-6) static gamma-axons were stimulated together; the blood flow through the muscle was not reduced during the p
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9. Effect of muscle glycogen depletion on in vivo insulin action in man.
In rats, muscle glycogen depletion has been associated with increased insulin action. Whether this also occurs in man has not been reported. After 4 d rest, 13 males (E Group) had a percutaneous muscle biopsy of the vastus lateralis muscle followed by a euglycemic clamp at plasma insulin congruent to 100 microU/ml and congruent to 1,900 microU/ml, with simul
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10. Motor unit recruitment as reflected by muscle fibre glycogen loss in a prosimian (bushbaby) after running and jumping1
A qualitative histochemical assessment of glycogen loss in biopsies was made in bush-babies after running and jumping. Glycogen loss was related to the specific type of exercise. After running, glycogen loss was greatest in the slow-twitch oxidative fibre and depletion in the fast-twitch oxidative glycolytic fibres was similarly greater than in the fast-twit
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11. A study of glycogen depletion and the fibre-type composition of cat skeleto-fusimotor units.
1. We have used the glycogen-depletion technique, combined with myofibrillar ATPase (mATPase) staining for muscle fibre type, to study the fibre-type composition of four skeleto-fusimotor (beta) units in cat peroneus tertius, namely, one beta dynamic (beta d) unit and three beta static (beta s) units. 2. Depletion of glycogen was observed in serial cross-sec
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12. Glycogen resynthesis in human muscle fibre types following exercise-induced glycogen depletion.
1. Studies investigating muscle glycogen resynthesis in man have usually examined mixed-fibred biopsies or have used histochemical methods to estimate single fibre resynthesis. Since the accuracy of the latter is open to debate, this study investigated glycogen resynthesis in type I and II fibres using biochemical methods of analysis. 2. Seven subjects perfo