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Nutritional Demands (How carbs fuel our body for exercise (Muscle and…
Nutritional Demands
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What are carbs important
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Less O2 needed to metabolised than fat. - Yields more energy per liter of O2 consumed. 5.05kcal vs 4.69kcal
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Distance cyclist
Low levels body fat, increase power
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Fat stores for energy
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3 Lipid store
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adipose as triglycerides (50-100,000kcals) Fatty acids released from triglyceride (TG).
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Endurance - Steady state - long duration of exercise - different intensity. Walking, running, cycling. Aerobic
Strength/Power - Very short distance, very high intensity. Often single max effort. Weight lifting - throwing events - typically anaerobic.
Intermittent - Short explosive bursts - periods of low intensity recovery. Duration varies. Football, tennis, basketball.
Carbs - sugar cane important since 1300s - huge increase in consumption 1900s. 1970s sugar consumption - 500kcal
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1980s CHO consumption and exercise studied extensively. CHO important macronutrient for sport and exercise.
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