Download or read book Physiology and Physiopathology of Breath Holding Activity written by Frederic Lemaitre and published by Frontiers Media SA. This book was released on 2022-03-14 with total page 172 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Physiology of Breath hold Diving and the Ama of Japan written by Hermann Rahn and published by . This book was released on 1965 with total page 392 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The physiological consequences of breath hold diving in marine mammals the Scholander legacy written by Andreas Fahlman and published by Frontiers E-books. This book was released on with total page 155 pages. Available in PDF, EPUB and Kindle. Book excerpt: Breath-hold diving marine mammals are able to remain submerged for prolonged periods of time and dive to phenomenal depths while foraging. A number of physiological, biochemical and behavioral traits have been suggested that enable this life style, including the diving response, lung collapse, increased O2 stores, diving induced hypometabolism, and stroke-and-glide behavior to reduce dive metabolic cost. Since the initial studies by Scholander in the 1940‘s, when most of the physiological and biochemical traits were suggested, few have received as much study as the diving response and O2 management. The calculated aerobic dive limit (cADL) was an important concept which allowed calculation of the aerobic dive duration, and was defined as the total O2 stores divided by the rate of O2 consumption (metabolic rate). The total O2 stores have been defined for several species, and studies in both forced and freely diving animals have refined the metabolic cost of diving. Currently there appears to be little consensus about whether marine mammals perform a significant proportion of dives exceeding the cADL or not and there may be large differences between species. The diving response is a conserved physiological trait believed to arise from natural selection. The response includes diving-induced bradycardia, peripheral vasoconstriction, and altered blood flow distribution. While the response results in reduced cardiac work, it is not clear whether this is required to reduce the overall metabolic rate. An alternate hypothesis is that the primary role of the diving bradycardia is to regulate the degree of hypoxia in skeletal muscle so that blood and muscle O2 stores can be used more efficiently. Scholander suggested that the respiratory anatomy of marine mammals resulted in alveolar collapse at shallow depths (lung collapse), thereby limiting gas exchange. This trait would limit uptake of N2 and thereby reduce the risk of inert gas bubble formation and decompression sickness. In his initial treatise, Scholander suggested that alveolar collapse probably made inert gas bubble formation unlikely during a single dive, but that repeated dives could result in significant accumulation that could be risky. Despite this, lung collapse has been quoted as the main adaptation by which marine mammals reduce N2 levels and inert gas bubble formation. It was surprising, therefore, when recent necropsy reports from mass stranded whales indicated DCS like symptoms. More recent studies have shown that live marine mammals appear to experience bubbles under certain circumstances. These results raise some interesting questions. For example, are marine mammals ever at risk of DCS, and if so could N2 accumulation limit dive performance? While an impressive number of studies have provided a theoretical framework that explains the mechanistic basis of the diving response, and O2 management, many questions remain, some widely-accepted ideas actually lack sufficient experimental confirmation, and a variety of marine mammal species, potentially novel models for elucidating new diving adaptations, are understudied. The aim of this Frontiers Topic is to provide a synthesis of the current knowledge about the physiological responses of marine mammals that underlie their varied dive behavior. We also include novel contributions that challenge current ideas and that probe new hypotheses, utilize new experimental approaches, and explore new model species. We show that the field has recently entered a phase of renewed discovery that is not only unraveling more secrets of the natural diving response but will drive new applications to aid human exploration of the ocean depths. We also welcome comparative analyses, especially contributions that compare marine mammals with human divers.
Download or read book Diving Physiology of Marine Mammals and Seabirds written by Paul J. Ponganis and published by Cambridge University Press. This book was released on 2015-11-26 with total page 351 pages. Available in PDF, EPUB and Kindle. Book excerpt: An up-to-date synthesis of comparative diving physiology research, illustrating the features of dive performance and its biomedical and ecological relevance.
Download or read book The Physiology and Medicine of Diving and Compressed Air Work written by Peter B. Bennett and published by Bailliere Tindall Limited. This book was released on 1975 with total page 596 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Marine Mammals written by Randall W. Davis and published by Springer Nature. This book was released on 2019-11-14 with total page 302 pages. Available in PDF, EPUB and Kindle. Book excerpt: This comprehensive book provides new insights into the morphological, metabolic, thermoregulatory, locomotory, diving, sensory, feeding, and sleep adaptations of Cetacea (whales and dolphins), Pinnipedia (seals, sea lions and walrus), Sirenia (manatees and dugongs) and sea otters for an aquatic life. Each chapter reviews the discoveries from previous studies and integrates recent research using new techniques and technology. Readers will gain an understanding of the remarkable adaptations that enable marine mammals to spend all or most of their lives at sea, often while hunting prey at depth.
Download or read book Scuba Diving Explained written by Lawrence Martin and published by Lawrence Martin. This book was released on 1997 with total page 350 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Diving Science written by Michael B. Strauss and published by Human Kinetics. This book was released on 2004 with total page 412 pages. Available in PDF, EPUB and Kindle. Book excerpt: This text blends theoretical and scientific aspects with practical and directly applicable diving physiology and medical information. It is divided into three sections - the underwater environment, physiological responses to the underwater environment, and medical problems associated with the sport.
Download or read book Bennett and Elliott s Physiology and Medicine of Diving written by Alf O. Brubakk and published by Saunders Limited.. This book was released on 2003 with total page 808 pages. Available in PDF, EPUB and Kindle. Book excerpt: This thoroughly updated edition, considered the 'bible' in this field since 1969, offers in-depth coverage of the physiological basis of safe diving and the pathogenesis of diving illnesses; the clinical diagnosis and management of diving disorders; and current equipment design and its practical clinical applications. Also covered is a current understanding of central nervous system pathology, contemporary decompression theories, and state-of-the-art treatment protocols for decompression, drowning and hypothermia.
Download or read book Cardiovascular Regulation written by David Jordan and published by Ashgate Publishing. This book was released on 1995 with total page 159 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Studies in Physiology series provides a concise introduction to developments in complex areas of physiology for a wide audience. Published on behalf of the Physiology Society, Cardiovascular Regulation provides an up-to-date account of our current understanding of the control of the cardiovascular system that is not covered by existing textbooks. Both students and lecturers of cardiovascular and exercise physiology, medicine, dentistry and biomedical sciences will find this book informative and easy to read. Each chapter has numerous summary boxes. 'Essential reading' suggestions provide additional reading for undergraduates and the suggestions for 'Further reading' cover the subject to postgraduate level.
Download or read book Bove and Davis Diving Medicine written by Alfred A. Bove and published by Saunders. This book was released on 2004 with total page 654 pages. Available in PDF, EPUB and Kindle. Book excerpt: Covers basic diving physiology; the pathophysiology of decompression sickness; maritime toxicology; assessment of fitness for diving; special considerations for female, elderly, and pediatric divers; diving-related problems in people with pre-existing medical conditions such as pulmonary, cardiac, and neurologic disease, and much more, with new chapters on the kinetics of intert gas, marine poisoning and intoxication, and diabetes and diving.
Download or read book Deep written by James Nestor and published by Houghton Mifflin Harcourt. This book was released on 2014 with total page 285 pages. Available in PDF, EPUB and Kindle. Book excerpt: Our species is more profoundly connected to the sea than we ever realized, as an intrepid cadre of scientists, athletes, and explorers is now discovering. Deep follows these adventurers into the ocean to report on the latest findings about its wondrous biology -- and unimagined human abilities.
Download or read book Medical Aspects of Sport Diving written by Christopher Wayne Dueker and published by . This book was released on 1970 with total page 240 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Advanced Environmental Exercise Physiology written by Stephen S. Cheung and published by Human Kinetics. This book was released on 2022 with total page 297 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Short, factual description of the book (summary of what it includes, without subjective or promotional language.) This book, for upper undergraduate and graduate students and professionals in the field, is used to provide an overview of how the environment impacts exercise"--
Download or read book Manual of Freediving written by Umberto Pelizzari and published by . This book was released on 2016 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Freediving written by Yannis Detorakis and published by Createspace Independent Publishing Platform. This book was released on 2017-04-03 with total page 216 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Freediving - The Physiology" is a complete guide for the three levels of freediver training, the three levels of instructor training, and for the instructor trainer. The book works as a manual for everyone, introducing all readers to the greatest secrets of the human body's responses to freediving, from the new freediver to the doctors who look to expand their knowledge in freediving. A new freediver will find chapters on ear equalization, the diving reflex, the mechanism of apnea, the factors of breath-hold, the danger of shallow water blackout, advice on a special diet before and during the freediving day, and many more interesting subjects for a beginner in freediving. Experienced freedivers will enhance their knowledge of deep freediving, safety rules and rescue techniques, through subjects including the human diving responses, specialized advice on deep freediving lung equalization, advanced ear equalization methods, special factors and methods for increased apnea duration, safety rules on avoiding hyperventilation and a hypoxic state (hypoxia - blackout or LMC - loss of motor control), the rescue methods for the hypoxic diver, advice on thermal problems and hypothermia, a chapter about special diet methods for increased performances in freediving, as well as an abundance of knowledge crucial for expanding their performance underwater and correcting possible mistakes. Deep freedivers, instructors and doctors will all find everything there is to know about freediving physiology in this book! Extreme freediving has its place in every chapter of the book, covering aspects of great wonder and mystery to be researched, such as methods in reducing the brain's oxygen consumption during apnea, lung equalization and the diving reflex at great depths, gas narcosis in deep freediving, freediving decompression sickness, lung packing dangers and others.
Download or read book DAN Annual Diving Report 2019 Edition written by Petar Denoble and published by . This book was released on 2020-05-15 with total page 108 pages. Available in PDF, EPUB and Kindle. Book excerpt: The 2019 DAN Annual Diving Report is a summary of recreational scuba diving and freediving incidents, injuries and fatalities that occurred in 2017 in the U.S. or Canada or that involved U.S. or Canadian residents. DAN's intention is for this annual publication to enhance awareness of dive injuries and give divers the insights they need to better avoid emergencies.
