Recommended resources on sports nutrition:

Nancy Clark's Sports Nutrition Guidebook, 3rd Edition by Nancy Clark, MS, RD; http://www.nancyclarkrd.com

Eating for Endurance by Ellen Coleman, MS, RD

Sports, Cardiovascular and Wellness Dietitians; http://www.scandpg.org

Gatorade Sports Science Institute; http://www.gssiweb.com

Supplements:

Office of Dietary Supplements; http://www.ods.od.nih.gov

Fitness/Training/Exercise Physiology:

American Council on Exercise; http://acefitness.org

National Stength and Conditioning Association; http://www.nsca-lift.org

General nutrition:

The American Dietetic Association; http://www.eatright.org

Dietary Guidelines for Americans; http://www.MyPyramid.gov