Nutrition and Skeletal Muscle

Nutrition and Skeletal Muscle PDF

Author: Stéphane Walrand

Publisher: Academic Press

Published: 2018-10-24

Total Pages: 590

ISBN-13: 0128104104

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Nutrition and Skeletal Muscle provides coverage of the evidence of dietary components that have proven beneficial for bettering adverse changes in skeletal muscle from disuse and aging. Skeletal muscle is the largest tissue in the body, providing elements of contraction and locomotion and acting as an important contributor to whole body protein and amino metabolism, glucose disposal and lipid metabolism. However, muscle loss, atrophy or weakness can occur when there are metabolic imbalances, disuse or aging. This book addresses the topic by providing insight and research from international leaders, making it the go-to reference for those in skeletal muscle physiology. Provides an understanding of the crucial role of skeletal muscle in global metabolic homeostasis regulation Delivers the information needed to understand the utilization of crucial supplements for the preservation of skeletal muscle Presents insights on research from international leaders in the field

Skeletal Muscle Metabolism in Exercise and Diabetes

Skeletal Muscle Metabolism in Exercise and Diabetes PDF

Author: Erik A. Richter

Publisher: Springer Science & Business Media

Published: 2013-11-11

Total Pages: 325

ISBN-13: 1489919287

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The Copenhagen Muscle Research Centre was founded in 1994 with the support of a grant from the Danish National Research Foundation. Among the goals for the Centre is the organization of research symposia, with the aim of bringing a limited number ofintemation ally renowned scientists together to discuss the latest developments and perspectives in their field. The first Copenhagen Muscle Research Centre Conference was held in 1995 and dealt with cardiovascular regulation. The Second Copenhagen Muscle Research Centre Confer ence was held from October 23-26, 1997. The topic of the Symposium was Muscle Metabo lism: Regulation, Exercise, and Diabetes. Seventy invited scientists from all over the world discussed their latest research related to skeletal muscle metabolism. The speakers were asked to expand on their presentations and to write short, but comprehensive, chapters about their given topics. The result is 28 peer-reviewed and edited chapters covering many if not all aspects of muscle energy metabolism related to exercise and diabetes. Emphasis is on regulation of glucose and fatty acid metabolism and the mechanisms regulating their use as fuels for the muscle during exercise. In addition, abnormalities in the regulation of glucose metabolism in the diabetic state are described. However, amino acid and protein metabolism are also thoroughly discussed. We believe that this volume brings an unparralleled, up to date, and comprehensive review of the frontiers in muscle metabolism. Erik A.

Muscle Metabolism

Muscle Metabolism PDF

Author: Juleen R Zierath

Publisher: CRC Press

Published: 2002-02-28

Total Pages: 449

ISBN-13: 0203166426

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Diabetes research on models comprising intact animal tissues, cell cultures and isolated pancreatic islets is essential for understanding the pathogenesis of the disease as well as the mechanisms responsible for the chronic complications associated with it. Enormous advances in the understanding of the development of diabetes and its prevention hav

The Role of Protein and Amino Acids in Sustaining and Enhancing Performance

The Role of Protein and Amino Acids in Sustaining and Enhancing Performance PDF

Author: Institute of Medicine

Publisher: National Academies Press

Published: 1999-09-15

Total Pages: 448

ISBN-13: 0309172810

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It is a commonly held belief that athletes, particularly body builders, have greater requirements for dietary protein than sedentary individuals. However, the evidence in support of this contention is controversial. This book is the latest in a series of publications designed to inform both civilian and military scientists and personnel about issues related to nutrition and military service. Among the many other stressors they experience, soldiers face unique nutritional demands during combat. Of particular concern is the role that dietary protein might play in controlling muscle mass and strength, response to injury and infection, and cognitive performance. The first part of the book contains the committee's summary of the workshop, responses to the Army's questions, conclusions, and recommendations. The remainder of the book contains papers contributed by speakers at the workshop on such topics as, the effects of aging and hormones on regulation of muscle mass and function, alterations in protein metabolism due to the stress of injury or infection, the role of individual amino acids, the components of proteins, as neurotransmitters, hormones, and modulators of various physiological processes, and the efficacy and safety considerations associated with dietary supplements aimed at enhancing performance.

Muscle Metabolism During Exercise

Muscle Metabolism During Exercise PDF

Author: Bengt Pernow

Publisher: Springer Science & Business Media

Published: 2012-12-06

Total Pages: 536

ISBN-13: 1461346096

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Howard G. Knuttgen of Biology, Boston University, 2 Cummington Department Street, Boston, 02215 Massachusetts, USA The relationship of the formation of lactate acid to skeletal muscle energy release in exercising humans was first explored by A. V. Hill and co-workers (2l, 22). The term "oxygen debt" was suggested by them to describe the excess oxygen consumption of recovery which they felt was closely related. A combination of their work and the earlier work of Krogh and Lindhard (35) re sulted at that time in the belief that a certain amount of energy release during the transition from rest to exercise was provided by a non-aerobic source, glycolysis. The resulting accumulation of lactic acid (as lactate) in the body required an extra con sumption during recovery for its oxidative removal. Jervell (24) subsequently showed that, in exercise, the greatest accumulation in blood took place during the first few minutes. He felt that the blood lactate increase was due to a shortage of oxygen during the transition period. The observation was also made for the first time that the increased level of lac tate due to exercise could be made to fall faster if mild exercise was employed by the subjects in place of sedentary recovery. The work of Margaria, Edwards and Dill (40) appeared in 1933. They observed that exercise (treadmill running) could be carried on at low levels without significant changes in resting levels of blood lactate.

Exercise Metabolism

Exercise Metabolism PDF

Author: Mark Hargreaves

Publisher: Human Kinetics

Published: 2006

Total Pages: 320

ISBN-13: 9780736041034

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A comprehensive reference for biochemists, sport nutritionists, exercise physiologists, and graduate students in those disciplines. Provides information on the metabolic processes that take place during exercise, examining in depth the mobilization and utilization of substrates during physical activity. Focuses primarily on the skeletal muscle, but also discusses the roles of the liver and adipose tissue. Annotation copyright by Book News, Inc., Portland, OR

Muscle and Exercise Physiology

Muscle and Exercise Physiology PDF

Author: Jerzy A. Zoladz

Publisher: Academic Press

Published: 2018-11-05

Total Pages: 618

ISBN-13: 0128145943

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Muscle and Exercise Physiology is a comprehensive reference covering muscle and exercise physiology, from basic science to advanced knowledge, including muscle power generating capabilities, muscle energetics, fatigue, aging and the cardio-respiratory system in exercise performance. Topics presented include the clinical importance of body responses to physical exercise, including its impact on oxygen species production, body immune system, lipid and carbohydrate metabolism, cardiac energetics and its functional reserves, and the health-related effects of physical activity and inactivity. Novel topics like critical power, ROS and muscle, and heart muscle physiology are explored. This book is ideal for researchers and scientists interested in muscle and exercise physiology, as well as students in the biological sciences, including medicine, human movements and sport sciences. Contains basic and state-of-the-art knowledge on the most important issues of muscle and exercise physiology, including muscle and body adaptation to physical training, the impact of aging and physical activity/inactivity Provides both the basic and advanced knowledge required to understand mechanisms that limit physical capacity in both untrained people and top class athletes Covers advanced content on muscle power generating capabilities, muscle energetics, fatigue and aging

Skeletal Muscle Circulation

Skeletal Muscle Circulation PDF

Author: Ronald J. Korthuis

Publisher: Morgan & Claypool Publishers

Published: 2011

Total Pages: 147

ISBN-13: 1615041834

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The aim of this treatise is to summarize the current understanding of the mechanisms for blood flow control to skeletal muscle under resting conditions, how perfusion is elevated (exercise hyperemia) to meet the increased demand for oxygen and other substrates during exercise, mechanisms underlying the beneficial effects of regular physical activity on cardiovascular health, the regulation of transcapillary fluid filtration and protein flux across the microvascular exchange vessels, and the role of changes in the skeletal muscle circulation in pathologic states. Skeletal muscle is unique among organs in that its blood flow can change over a remarkably large range. Compared to blood flow at rest, muscle blood flow can increase by more than 20-fold on average during intense exercise, while perfusion of certain individual white muscles or portions of those muscles can increase by as much as 80-fold. This is compared to maximal increases of 4- to 6-fold in the coronary circulation during exercise. These increases in muscle perfusion are required to meet the enormous demands for oxygen and nutrients by the active muscles. Because of its large mass and the fact that skeletal muscles receive 25% of the cardiac output at rest, sympathetically mediated vasoconstriction in vessels supplying this tissue allows central hemodynamic variables (e.g., blood pressure) to be spared during stresses such as hypovolemic shock. Sympathetic vasoconstriction in skeletal muscle in such pathologic conditions also effectively shunts blood flow away from muscles to tissues that are more sensitive to reductions in their blood supply that might otherwise occur. Again, because of its large mass and percentage of cardiac output directed to skeletal muscle, alterations in blood vessel structure and function with chronic disease (e.g., hypertension) contribute significantly to the pathology of such disorders. Alterations in skeletal muscle vascular resistance and/or in the exchange properties of this vascular bed also modify transcapillary fluid filtration and solute movement across the microvascular barrier to influence muscle function and contribute to disease pathology. Finally, it is clear that exercise training induces an adaptive transformation to a protected phenotype in the vasculature supplying skeletal muscle and other tissues to promote overall cardiovascular health. Table of Contents: Introduction / Anatomy of Skeletal Muscle and Its Vascular Supply / Regulation of Vascular Tone in Skeletal Muscle / Exercise Hyperemia and Regulation of Tissue Oxygenation During Muscular Activity / Microvascular Fluid and Solute Exchange in Skeletal Muscle / Skeletal Muscle Circulation in Aging and Disease States: Protective Effects of Exercise / References

Oxidative Stress in Skeletal Muscle

Oxidative Stress in Skeletal Muscle PDF

Author: Reznick

Publisher: Birkhäuser

Published: 2012-12-06

Total Pages: 344

ISBN-13: 3034889585

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Skeletal muscle consumes significant amounts of oxygen, and its oxygen flux increases significantly under conditions of exercise and muscle contraction. This makes the muscle vulnerable to oxidative stress since concomitantly with the increase of oxygen flow there is an increase of free oxygen radicals which are a byproduct of muscle respiration. A number of studies in the last decade have documented the involvement of free oxygen radicals in exercising muscles. The consequences of muscle oxidative stress have resulted mainly in increased muscle protein oxidation, elevation of lipid peroxidation, and depletion of muscle antioxidants. The mechanisms of this oxidative stress are under extensive investigation in laboratories around the world and are topics of the chapters in this volume. This book is intended for professionals who are interested in muscle function, physiology, pathophysiology and well-being, such as therapists, trainers and medical professionals as well as for researchers in the field of muscle physiology.