pt. I. Nutrition sources for athletes : Energy nutrients ; Vitamins and minerals ; Fluids and electrolytes ; Ergogenic aids -- pt. II. Nutrition aspects of optimal performance : GI function and energy delivery ; Nutrient and fluid timing ; Oxygen transportation and utilization ; Strategies for anti-inflammation and muscular health -- pt. III. Factors affecting nutrition needs : Travel ; High altitude ; Gender and age ; Body composition and weight -- pt. IV. Nutrition strategies for specific energy systems