Fluid Balance Hydration And Athletic Performance

Athletes and nonathletes frequently consume too little water or fluids, affecting exercise performance as well as overall health. This book comprehensively reviews the aspects relating to body fluid balance, rehydration, and physical exercise. It provides background on body water balance and turnover, topics related to electrolyte balance, and sweating as the basis for thermoregulatory and fluid homeostasis during exercise. In addition, chapters cover body water balance evaluation and regulation; cardiovascular and metabolic responses to fluid imbalance; effects of dehydration on aerobic power, muscle strength, and cognitive function; fluid intake timing; and optimal beverage selection.

Body Fluid Balance: Exercise and Sport brings you the latest thinking on important topics in this dynamic research area. The authors of this authoritative compendium provide enlightening data and unique perspectives that will stimulate other investigators and supply independent analyses for practitioners and educators. The book is efficiently organized into three sections: Section one addresses control of body fluid during exercise. Topics range from basic thirst mechanisms to specific organ control. Section two discusses environmental influences on body fluid balance, including heat, cold, altitude, and immersion. Section three describes special considerations affecting body fluid balance during exercise, such as age, gender, physical performance, and clinical complications. Each chapter presents historical perspectives, critical experiments, appropriate analyses, and pertinent conclusions. Nowhere else will you find the information you need in such an easy-to-follow, convenient format.

This essential new volume in the Encyclopaedia of Sports Medicine series, published under the auspices of the International Olympic Committee, provides a thorough overview of the unique physiologic characteristics, responsiveness to training, and possible health hazards involved in the training, coaching, and medical care of young athletes. Intense involvement in competitive sports often begins during childhood. During adolescence, many athletes reach their peak performance and some may participate in World Championships and Olympic Games at a relatively young age. The Young Athlete presents the available information relevant to exercise and training in youth, reviewed and summarized by authors who are recognized as leaders in their respective fields. The Young Athlete is subdivided into seven parts covering: the physiologic bases of physical performance in view of growth and development; trainability and the consequences of a high level of physical activity during childhood and adolescence for future health; the epidemiology of injuries, their prevention, treatment, and rehabilitation; non-orthopedic health concerns including the pre-participation examination; psychosocial issues relevant to young athletes; diseases relevant to child and adolescent athletes; the methodology relevant to the assessment of young athletes. This valuable reference summarizes a large database of information from thousands of studies and is especially relevant to sports physicians, pediatricians, general practitioners, physical therapists, dietitians, coaches, students, and researchers in the exercise sciences.

Dietary Reference Intakes for Water, Potassium, Sodium, Chloride, and Sulfate The Dietary Reference Intakes (DRIs) are quantitative estimates of nutrient intakes to be used for planning and assessing diets for healthy people. This new report, the sixth in a series of reports presenting dietary reference values for the intakes of nutrients by Americans and Canadians, establishes nutrient recommendations on water, potassium, and salt for health maintenance and the reduction of chronic disease risk. Dietary Reference Intakes for Water, Potassium, Sodium, Chloride, and Sulfate discusses in detail the role of water, potassium, salt, chloride, and sulfate in human physiology and health. The major findings in this book include the establishment of Adequate Intakes for total water (drinking water, beverages, and food), potassium, sodium, and chloride and the establishment of Tolerable Upper Intake levels for sodium and chloride. The book makes research recommendations for information needed to advance the understanding of human requirements for water and electrolytes, as well as adverse effects associated with the intake of excessive amounts of water, sodium, chloride, potassium, and sulfate. This book will be an invaluable reference for nutritionists, nutrition researchers, and food manufacturers.

Tim Noakes, medical doctor, exercise physiologist, and internationally recognized expert on human performance, debunks current hydration beliefs. Waterlogged outlines practices that endurance athletes should follow, variables they should consider, and guidelines they should use to maintain proper fluid balance in sport training and performance.

“Drink as much as you can, even before you feel thirsty." That's been the mantra to athletes and coaches for the past three decades, and bottled water and sports drinks have flourished into billion-dollar industries in the same short time. The problem is that an overhydrated athlete is at a performance disadvantage and at risk of exercise-associated hyponatremia (EAH)--a potentially fatal condition. Dr. Tim Noakes takes you inside the science of athlete hydration for a fascinating look at the human body’s need for water and how it uses the liquids it ingests. He also chronicles the shaky research that reported findings contrary to results in nearly all of Noakes’ extensive and since-confirmed studies. In Waterlogged, Noakes sets the record straight, exposing the myths surrounding dehydration and presenting up-to-date hydration guidelines for endurance sport and prolonged training activities. Enough with oversold sports drinks and obsessing over water consumption before, during, and after every workout, he says. Time for the facts—and the prevention of any more needless fatalities.

The media extols the health benefits of good nutrition and physical activity. Since exercise and sport is becoming a bigger concern to the general public and not just elite athletes, the interest in research in this field is growing. Macroelements, Water and Electrolytes in Sport Nutrition addresses the relationship of macroelement needs and interactions to sports and exercise. Research indicates that work capacity and other measures of physical performance are influenced by the intake of water as well as several of the macroelements, including electrolytes. This book examines the convincing, and the not so convincing, evidence about the connection between exercise and sports activities and the nutrient status of individuals. Written by individuals from various academic disciplines, the book is a comprehensive, indispensable resource for scientists and practitioners with an interest in sports nutrition. It provides a review of topics related to water, macroelements, and exercise as well as identifies gaps in our knowledge, encouraging researchers to build upon the existing knowledge and advance our understanding of sport nutrition.