Sources used...

Nutrition Advice for Athletic Kids. "Ready, set, grow" by Nancy Clark
http://www.thriveonline.com/kids/sports.nutrition.html

Adolescent nutrition
http://www.thriveonline.com/health/Library/CAD/abstract15660.html

Nutrition for athletes
http://www.thriveonline.com/health/Library/pedillsymp/pedillsymp589.html

American Family Physician.  Nutrition and Athletes
http://www.thriveonline.com/health/Library/CAD/abstract18350.html

"Human Nutrition," Microsoft® Encarta® Encyclopedia 99. © 1993-1998 Microsoft Corporation.

Serious Training for Endurance Athletes
by Rob Sleamaker, Ray Browning (Contributor)
304 pages 2nd edition (September 1996)
Human Kinetics (T); ISBN: 0873226445