What are vitamins?
A Vitamin is an organic molecule required by a living organism in minute amounts for proper health. An organism deprived of all sources of a particular vitamin will eventually suffer from disease symptoms specific to that vitamin.
Vitamins can be classified as either water soluble, which means they dissolve easily in water, or fat soluble, which means they are absorbed through the intestinal tract with the help of lipids.
In general, an organism must obtain vitamins or their metabolic precursors from outside the body, most often from the organism's diet. Examples of vitamins that the human body can derive from precursors include vitamin A, which can be produced from beta carotene; niacin from the amino acid tryptophan; and vitamin D through exposure of skin to ultraviolet light.
The term vitamin does not encompass other essential nutrients such as dietary minerals, essential fatty acids, or essential amino acids, nor is it used for the large number of other nutrients that merely promote health, but are not strictly essential.
The word vitamin was coined by the Polish biochemist Casimir Funk in 1912. Vita in Latin is life and the -amin suffix is short for amine; at the time it was thought that all vitamins were amines. Though this is now known to be incorrect, the name has stuck.
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Nutrient Timing: The Future of Sports Nutrition
John Ivy, Robert Portman
Basic Health Publications, 2004-02-20
Price: $14.95
Keywords: Alternative Medicine, Diets Weight Loss, Diets, Health, Mind Body, Nutrition, Supplements, Vitamins Supplements
Reviews:
DON'T UNDERESTIMATE - Sound Advice by Qualified Authors, usefull to all Athletes
Great information that needs a more user-friendly format
Excellent
The Cutting Edge For Serious Athletes
Nutrient Timing: The Future of Sports Nutrition
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No matter what you are training for, from power lifting to Ironman triathlon, from football to classical ballet, if you want your body to respond faster and more effectively to the training you are doing, then read this book.
Be aware that the authors do discuss Nutrition in a resistance training context, but there conclusions and their advice is consistent with conclusions of sport science as discuses by other authors, see "other materials of interest" later.
This is a a very to the point, non-technical, no pseudo-science guide to improving your body's ability to respond to your training and exercise time investment. Much of the training and exercise time athletes and fitness enthusiasts spend in the gym is work targeted at SAID (Specific Adaptation to Imposed Demand) directed at making that individual better able to perform - stronger, faster, more powerful, or better protected from injury. This book is about knowing when to eat and what to eat to give your body the opportunity to perform at it best during exercise, game, or performance and to recover and adapt faster than it has before.
One piece of advice to readers - Don't obsess about minute details.
At least one of the Amazon reviewers posted complex recipes trying to exactly match the diet recommendations. Use the 'themes', such as including protein in your recovery drink, and then work within those themes to find out what works well for you over time.
Other materials of interest to athletes who want to learn more about sport nutrition:
For runners, and especially for female athletes, I strongly recommend "Fast Track : Training and Nutrition Secrets from America's Top Female Runner" by Suzy Favor-Hamilton. You will be very surprised how similar the dietary recommendations are.
For personal trainers, coaches, and athletes with some biology or chemistry foundation I would strongly recommend "Sport Nutrition: An Introduction to Energy Production and Performance" by A. Jeukendrup & M. Gleeson, which is a very up to date (published 2004), comprehensive, and peer reviewed treatment of the subject.