Nutrition A Slides 04.04 part 1

Muscular work 70 generates vo2 max vo2 glucose

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Unformatted text preview: ithout oxygen): Anaerobically Glucose from liver and muscle glycogen Generates most of the energy for intense muscular work (>70% Generates VO2 max) VO2 Glucose converted to pyruvate during anaraerobic energy formation – Pyruvate is converted to lactic acid in the absence of oxygen Creatine phosphate also converts some ADP to ATP Creatine – Aerobically (with oxygen): Conversion of pyruvate and fatty acids to ATP Fuel for low- to moderate-intensity exercise (<60% VO2 max) ATP and Energy ATP Main substrates for energy Main Glucose from muscle and liver glycogen, and Glucose fatty acids from fat stores are energy substrates fatty How much of each depends on: – – – intensity and duration of exercise body’s ability to deliver them to muscles body’s ability to deliver oxygen to muscles Each substrate forms ATP from ADP from ATP is the source of energy for muscle ATP contraction contraction Pre-Event, Event, and Recovery Foods Pre-Event, Pre-event (3-4 hours prior to event) – High carbohydrate, low-glycemic-index foods – Examples: pasta, fruits, breads, energy bars and drinks Endurance event (> 1 hour duration) – Sports drinks (fluid + electrolytes + carbohydrates), energy bars or gels Recovery (within 30 minutes after event) – Fluids, carbohydrates, high quality p...
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