Rikki Keen:The Importance of Vitamin D in Human Performance This featured article presents recent research on the effect and value of vitamin D, offers information on the symptoms of vitamin D defi ciency and provides suggestions to help improve athletic performance. Vu H. Nguyen: Calcium for Athletes to Improve Bone Strength and Health The importance of bone and heart health cannot be understated. Research on the value of calcium, its effect on athletic performance and the risk factors associated with inadequate levels of calcium are presented. Kyle Brown The Manipulated Food Chain: You are What You Eat, Eats This article examines the evolution of the modern "food chain," and how it affects dietary decisions on a daily basis. Debra Wein; Caitlin O. Riley: Pre-Exercise Fuel Nutrition is important when competing at a high level and this article presents research that should help you determine the proper timing and balance to excel at any level.
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