Download or read book The Slow Component of Oxygen Uptake Kinetics in Young and Older Men written by Surendran Sabapathy and published by . This book was released on 2001 with total page 344 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Oxygen Uptake and Blood Flow Kinetics Following the Onset of Exercise in Trained Humans written by Azmy Faisal and published by . This book was released on 2010 with total page 235 pages. Available in PDF, EPUB and Kindle. Book excerpt: The main hypothesis of this thesis was that the regulation of oxygen uptake (VO2) kinetics at the onset of exercise in trained young men is linked to cardiovascular adaptations. Two studies were conducted to investigate the interrelationships between oxygen (O2) transport and O2 utilization in accelerating VO2 kinetics at the onset of exercise. In the first study, simultaneous kinetics of VO2 and cardiac output (Q) were studied during the transition to heavy and moderate cycling exercise (Chapter 2). The acceleration of VO2 kinetics during the heavy exercise that followed prior moderate or heavy exercise was enabled by the rapid increase in Q; whereas, the acceleration of VO2 kinetics during moderate exercise that followed a heavy warm-up was associated with small changes in Q kinetics. The objective of the second study was to determine, in a model of forearm exercise, if the elevation of forearm blood flow (FBF) prior to the onset of exercise by prior circulatory occlusion would accelerate FBF and muscle oxygen uptake (VO2mus)kinetics during subsequent exercise as demonstrated previously for prior exercise (Chapter 3). Prolonged ischemia (15 min occlusion) followed by 3 min recovery reduced FBF and impaired VO2mus kinetics during subsequent heavy hand-grip exercise. However, prior heavy exercise confirmed the previous findings and resulted in a faster FBF and VO2mus kinetics. There was a high positive correlation between the time course of change in FBF and VO2mus at the onset heavy exercise. In a follow up of the second study, to investigate a possible mechanism for the slower adaptation of VO2mus following ischemia, the prior occlusion condition was repeated after ingesting a high dose of ibuprofen. Prostaglandin inhibition by ibuprofen augmented the FBF response during reactive hyperaemia and restored FBF during the heavy exercise that followed 15 min of circulatory occlusion to the control level. These two studies provide evidence that O2 delivery plays a dominant role in accelerating VO2 kinetics at the onset of heavy exercise in trained young men. The findings exposed differences in the mechanisms regulating pulmonary VO2 and VO2mus with prior exercise resulting in higher Q and FBF, but no changes in O2 extraction to yield the faster increase in pulmonary VO2 and VO2 at the onset of subsequent heavy exercise. In contrast, prior occlusion slightly retarded the increase in FBF and significantly reduced O2 extraction thus delaying VO2 kinetics. The precise mechanisms impairing VO2mus kinetics at the onset of heavy forearm hand-grip exercise that starts after a brief recovery from prolonged occlusion are still unknown, but this impairment may be partially due to a vasoconstrictor effect restricting blood flow during the adaptation to exercise and redistribution of the blood to the periphery. In a third study, the influence of muscle activity on the VO2 slow component during heavy exercise and O2 cost during moderate exercise that followed a heavy warm-up were examined (Chapter 4). The heavy exercise VO2 slow component was attenuated in a graded fashion by prior moderate and heavy warm-ups, and the principal components analysis showed a moderate but significant correlation between the changes in the integrated electromyographic activity and the VO2 slow component amplitude. The higher O2 cost of moderate exercise following a heavy warm-up was associated with higher mean power frequency. Changes in VO2 slow component and increased O2 cost during moderate exercise after prior heavy warm-up appear to be related to some changes in surface electromyographic activity which may provide some evidence for increased muscle fibres recruitment.

Download or read book Oxygen Uptake Kinetics in Sport Exercise and Medicine written by Andrew M. Jones and published by Routledge. This book was released on 2013-07-04 with total page 547 pages. Available in PDF, EPUB and Kindle. Book excerpt: Despite its crucial importance, scientists interested in the limitations of human physical performance have only just started to give the field of oxygen uptake kinetics the attention it deserves. Understanding the principal determinant of the oxygen uptake kinetics is fundamental to improving human performance or the quality of life. This book provides a detailed overview of the current state of knowledge of this emerging field of study, and features: * an introduction to oxygen uptake kinetics and historical development of the discipline * measurement and analysis of oxygen uptake kinetics * control of and limitations to oxygen uptake kinetics * applications of oxygen uptake kinetics in a range of human populations. Oxygen Uptake Kinetics in Sport, Health and Medicine is richly illustrated and structured to enable easy access of information and represents an invaluable resource for students and researchers in exercise physiology, as well as for respiratory physiologists and pulmonary clinicians.

Download or read book Examination of the Relationship Between the Slow Component of Oxygen Uptake Kinetics and Plasma Ammonia Concentrations During Cycle Ergometer Exercise written by Moh H. Malek and published by . This book was released on 2007 with total page 96 pages. Available in PDF, EPUB and Kindle. Book excerpt: The purposes of this study were to: (1) compare the patterns of responses for plasma ammonia concentration ([NH3]) during moderate- and heavy intensity cycle ergometry; and (2) examine the relationship between the V˙O2 slow component (V˙O2SC) and plasma [NH3]. Thirteen healthy, untrained college males who performed less than a total of two hours of aerobic and/or resistance exercise per week visited the laboratory on six separate occasions. The initial visit included a V˙O2max test, whereas subsequent visits involved constant power output exercise (7-minutes in duration) at two different intensities [moderate 60%GET = 60% of the gas exchange threshold; and heavy, Delta50% = 50% of the difference between GET and V˙O2max)]. Plasma was collected from an antecubital vein prior to the exercise, during the last three minutes of the six minute warm-up, and during each minute of the seven minute constant power output workbout. The time course of changes in plasma [NH3] and V˙O2 during the two constant power output exercise intensities (60%GET and Delta50%) were assessed separately using 2 (intensity: 60%GET and Delta50%) x 7 (time: each minute of 7-minute workbout) repeated-measures ANOVAs. When appropriate, Scheffe's post-hoc analyses were used to determine significantly different mean values. In addition, a Pearson's correlation coefficient was calculated to assess the relationship between plasma [NH3] and the amplitude of the V˙O2SC for the heavy intensity exercise. For moderate intensity exercise (60%GET), there were no significant differences in the mean normalized plasma [NH3] during the 7-minute workbout. In addition, the mean normalized V˙O2 values were not significantly different from each other during the final 5-minutes of the exercise workbout. For heavy intensity exercise (Delta50%), there was a significant increase in the mean normalized plasma [NH3] during the 7-minute workbout. Similarly, the mean normalized V˙O 2 response increased significantly during the entire 7-minute workbout. Pearson's correlation coefficient indicated a significant (r = 0.76, p

Download or read book Mean Blood Velocity and Oxygen Uptake Kinetics in Older and Younger Men written by and published by . This book was released on 2000 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Very Early Lactate Threshold in Healthy Young Men as Related to Oxygen Uptake Kinetics written by and published by . This book was released on 2015 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Oxygen Uptake Kinetics in Sport Exercise and Medicine written by Andrew M. Jones and published by Routledge. This book was released on 2013-07-04 with total page 433 pages. Available in PDF, EPUB and Kindle. Book excerpt: Despite its crucial importance, scientists interested in the limitations of human physical performance have only just started to give the field of oxygen uptake kinetics the attention it deserves. Understanding the principal determinant of the oxygen uptake kinetics is fundamental to improving human performance or the quality of life. This book provides a detailed overview of the current state of knowledge of this emerging field of study, and features: * an introduction to oxygen uptake kinetics and historical development of the discipline * measurement and analysis of oxygen uptake kinetics * control of and limitations to oxygen uptake kinetics * applications of oxygen uptake kinetics in a range of human populations. Oxygen Uptake Kinetics in Sport, Health and Medicine is richly illustrated and structured to enable easy access of information and represents an invaluable resource for students and researchers in exercise physiology, as well as for respiratory physiologists and pulmonary clinicians.

Download or read book Exercise as a Countermeasure to Human Aging written by Bradley Elliott and published by Frontiers Media SA. This book was released on 2020-11-12 with total page 374 pages. Available in PDF, EPUB and Kindle. Book excerpt: This eBook is a collection of articles from a Frontiers Research Topic. Frontiers Research Topics are very popular trademarks of the Frontiers Journals Series: they are collections of at least ten articles, all centered on a particular subject. With their unique mix of varied contributions from Original Research to Review Articles, Frontiers Research Topics unify the most influential researchers, the latest key findings and historical advances in a hot research area! Find out more on how to host your own Frontiers Research Topic or contribute to one as an author by contacting the Frontiers Editorial Office: frontiersin.org/about/contact.

Download or read book Canadian Journal of Applied Physiology written by and published by . This book was released on 2004 with total page 600 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Physical Fitness sports Medicine written by and published by . This book was released on 1984 with total page 988 pages. Available in PDF, EPUB and Kindle. Book excerpt: Consists of citations selected from those contained in the National Library of Medicine's Medical Literature Analysis and Retrieval System.

Download or read book Oxford Textbook of Children s Sport and Exercise Medicine written by Neil Armstrong and published by Oxford University Press. This book was released on 2023 with total page 785 pages. Available in PDF, EPUB and Kindle. Book excerpt: The 4th edition of the Oxford Textbook of Children's Sport and Exercise Medicine is the definitive single-volume reference in the field presented in four sections Exercise Science; Exercise Medicine; Sport Science; and Sport Medicine.

Download or read book Development of the Youth Athlete written by Neil Armstrong and published by Routledge. This book was released on 2018-08-15 with total page 308 pages. Available in PDF, EPUB and Kindle. Book excerpt: Development of the Youth Athlete offers a single-authored, well-illustrated, evidence-based, and integrated analysis of the development and trainability of the morphological and physiological characteristics which influence sport performance in youth. The book critically analyses the development of the youth athlete in the context of current and future sport performance and long-term health and well-being. Development of the Youth Athlete identifies the principal controversies in youth sport and addresses them through sport-specific examples. Presenting a rigorous assessment and interpretation of scientific data with an emphasis on underlying physiological mechanisms, the book focuses on the interactions between growth, maturation, and: Sport-related fitness Sport-specific trainability Sport performance Challenges in youth sport Providing the only up-to-date, coherent critical discourse on youth athlete development currently available, Development of the Youth Athlete is essential reading for students, lecturers, sport medicine practitioners, researchers, scholars, and senior coaches with an interest in youth sport, exercise science, and sport medicine.

Download or read book Cumulated Index Medicus written by and published by . This book was released on 2000 with total page 1844 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Essentials of Exercise Physiology written by William D. McArdle and published by Lippincott Williams & Wilkins. This book was released on 2006 with total page 794 pages. Available in PDF, EPUB and Kindle. Book excerpt: Fully revised and updated, this Third Edition provides excellent coverage of the fundamentals of exercise physiology, integrating scientific and clinical information on nutrition, energy transfer, and exercise training. The book is lavishly illustrated with full-color graphics and photos and includes real-life cases, laboratory-type activities, and practical problem-solving questions. This edition has an Integrated Workbook in the margins that reinforces concepts, presents activities to test knowledge, and aids students in taking notes. An accompanying CD-ROM contains multiple-choice and true/false questions to help students prepare for exams. LiveAdvise online faculty support and student tutoring services are available free with the text.

Download or read book Kinanthropometry and Exercise Physiology Laboratory Manual Tests Procedures and Data written by Roger Eston and published by Routledge. This book was released on 2020-07-01 with total page 381 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is a combined set of the two fully revised and updated manuals Kinanthropometry and Exercise Physiology Laboratory Manual: Tests, Procedures and Data. The in-depth analyses of anthropometry and exercise physiology are presented in one volume for the first time. Physiology and practical work is now a compulsory element of sports and exercise science. These texts have been developed as key resources for lecturers and students of kinanthropometry, sports science, human movement and exercise physiology. The well-illustrated manuals provide: * help in planning and conduct of practical sessions * comprehensive theoretical background on each topic and up-to-date information so that there is no need for additional reading * seven entirely new chapters providing a balance between kinanthropometry and physiology * eleven stand-alone chapters in each volume enabling the reader to pick out topics of interest in any order * a wide range of supporting diagrams, photographs and tables. A complete one-stop resource, this set presents laboratory procedures next to real-life practical examples, each supported with appropriate data. In addition, each chapter is supplemented by a complete review of contemporary literature, as well as theoretical overviews, offering an excellent basic introduction to each topic.

Download or read book Energetics of Muscular Exercise written by Guido Ferretti and published by Springer. This book was released on 2015-03-25 with total page 196 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book discusses the maximal power and capacity of the three major biochemical pathways - aerobic (oxygen consumption), anaerobic lactic (muscle lactate accumulation in absence of oxygen consumption), and anaerobic alactic (phosphocreatine hydrolysis) metabolism - as well as the factors that limit them. It also discusses the metabolic and cardio-pulmonary mechanisms of the dynamic response to exercise. The way and extent to which the power and capacity of the three major energy metabolisms are affected under a number of different conditions, such as training, hypoxia and microgravity, are also described.

Download or read book Paediatric Exercise Physiology written by Neil Armstrong and published by Elsevier Health Sciences. This book was released on 2007-01-01 with total page 390 pages. Available in PDF, EPUB and Kindle. Book excerpt: Children are not mini-adults. They are growing and maturing at their own individual rates and their physiological responses to exercise are dependent on a large number of variables as they progress through childhood and adolescence into adult life. Understanding has been limited by the fact that measurement techniques and equipment developed for use with adults are often not appropriate or even ethical for use with young people. These issues are addressed in this book which provides an analysis of physiological responses to exercise in relation to age, growth, maturation and sex. Structured in an easy, accessible way for students and lecturersWell referenced, including a further reading list with each chapterNumerous standard textbook elements, including learning objectives, key points and an extensive glossary of terms and commonly used abbreviationsThe editor and contributors are all active researchers in paediatric exercise physiology with experience of teaching modules in this area