Download or read book Oxygen Consumption Kinetics During Prolonged Heavy Exercise written by Kristina Marie Kury and published by . This book was released on 1990 with total page 150 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 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 Oxygen Uptake Kinetics During Heavy Cycling Versus Knee extension Exercise and Effect of Prior Heavy Exercise written by Sarah M. Cleland and published by . This book was released on 2008 with total page 168 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 The Effects of Ambient Heat During Exercise on Recovery Oxygen Consumption Kinetics and Resting Metabolic Rate written by Marianne Gimble and published by . This book was released on 1986 with total page 226 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Post exercise VO2 Kinetics written by Steven Scott Segal and published by . This book was released on 1978 with total page 110 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Oxygen Consumption and Cardiac Output Kinetics from Rest to Steady State Exercise in Trained and Untrained Men written by Stacey A. Meimann and published by . This book was released on 1992 with total page 124 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Kinetics of Oxygen Consumption and Blood Lactate Levels in Exercise and Recovery written by James Michael Hagberg and published by . This book was released on 1976 with total page 414 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Effect of Epinephrine on Slow Component of Oxygen Consumption During Heavy Exercise written by Romina Villamonte and published by . This book was released on 2013 with total page 104 pages. Available in PDF, EPUB and Kindle. Book excerpt: Prior heavy exercise bout on cycle ergometer changes the VO2 kinetics of a subsequent heavy exercise bout. These changes are an increase in VO2 fundamental component (Ap) and a reduction in VO2 slow component (VO2sc) without changing primary component time constant. Infusion of epinephrine has shown to increase resting VO2 levels in humans at rest and during exercise. To test the effect of epinephrine on VO2 kinetics, epinephrine was injected at the beginning of exercise and the kinetics of oxygen consumption was compared with the oxygen kinetics of a prior and second exercise bouts. Seven healthy physically active male participants volunteered for the study. Participants performed 8 min bout of heavy exercise on an electrically braked cycle ergometer preceded by 1) 8 min heavy exercise bout with a 6 min rest period in between and 2) 0.10 mg epinephrine intra muscular injection on deltoid immediately followed by 5 minutes rest to reach it's onset of action. Same protocol was performed in two different days. Bloods samples to measure plasma [Epi] and [NE] were taken ten times in total during each testing day. Fundamental amplitude (Ap) of epinephrine bout was significantly higher than the prior cycling bout (p

Download or read book Oxygen Uptake Kinetics in Sport Exercise and Medicine written by Andrew M. Jones and published by Psychology Press. This book was released on 2005-01-01 with total page 405 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 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 The Effect of Low and High Carbohydrate Diets on Pulmonary Oxygen Uptake and Muscle Deoxygenation Kinetics During Exercise Transitions Into the Heavy intensity Domain written by John Leckie and published by . This book was released on 2013 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The purpose of this study was to determine the effects of a high carbohydrate (HCHO) and low carbohydrate (LCHO) diet on the adjustment of pulmonary oxygen (O2) uptake () and muscle deoxygenation ([HHb]) during transitions to heavy intensity exercise. Young, healthy, male subjects aged (24+/-3) underwent a 4 day LCHO followed immediately by a 4 day HCHO diet, with each diet preceded by a glycogen depletion protocol. This protocol was designed to alter PDH activity. Subjects completed 3 step transitions to a work rate corresponding to 35% of the difference between their lactate threshold and peak for each condition. On day 3 of the diets gas exchange measurements were collected using mass spectrometry and [HHb] measures were recorded using near-infrared spectroscopy (NIRS). On day 4 of the diets muscle biopsies were taken from the vastus lateralis muscle of the quadriceps muscle group at steady-state baseline exercise (20 W) and at 15 s and 360 s during the transition to heavy exercise. These biopsies were frozen for later analysis. It was found that the dietary manipulation had a significant effect (p0.05) [HHb]. This study posits that PDH plays a crucial role in the adjustment of oxidative metabolism to exercise.

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 Determination of Respiratory Quotient from V O2 Kinetics During Supra lactate Threshold Exercise in Humans written by Steven Carl Sparks and published by . This book was released on 1995 with total page 172 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Oxygen Uptake Kinetics During Constant load Exercise in Anaemic Athletes written by Morakot Kongsri and published by . This book was released on 2001 with total page 210 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Oxygen Uptake Kinetics During Exercise microform written by Michael Leonard Walsh and published by National Library of Canada = Bibliothèque nationale du Canada. This book was released on 1993 with total page 284 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Oxygen Uptake Kinetics in Severe Intensity Exercise written by and published by . This book was released on 2000 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: