NTR_109_Protein_outline_(chapter4)[1]

NTR_109_Protein_outline_(chapter4)[1] - Lecture 4 Protein 0...

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Lecture 4 Protein 0. Function 0. Build muscles, hair and nails – Primary material of life, we need protein for growth and repair. 1. Enzymes- facilitated chemical reactions in the body 0. Digestive, Blood clotting, Release of energy 2. Hormones- Chemical messengers that regulate body processes 1. Insulin -Protein also regulates quantity of fluids in the compartments of the body - Helps maintain fluid & electrolyte balance Na + K + Protein 1. Function 3. Connective tissue -> in muscle, blood, skin 4. Antibodies – maintains resistance to disease the produce by immune cells -> response to antigens (foreign substances in the body) 5. Red blood cells - Hemoglobin (Hgb) -> Large globular protein that carries oxygen to red blood cells 6. Calories – 4 kcal/g Protein 2. Adult needs 7. Average = 45-65 g/day 8. 0.8 g/kg body wt ( for healthy adult) Women need 45-50 g/day and men need 60-65 g/day
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9. Example: 145 lb / 2.2lbs = 64 kg 10. 64 kg X0.8 g/kg =51 g protein/day RDA for Protein *RDA: Recommended Dietary Allowance- the average daily dietary intake level that is sufficient to meet the nutrient requirements of nearly all (approx 98%) healthy individuals 3. Increased protein needs by ~10-15 g/d for pregnancy, lactation 4. Endurance athletes -may need 1.2-1.7 g/kg of body wt 5. Provide ~10% of total calories from diet 6. Most of us eat more than RDA for protein 7. Excess protein cannot be stored as protein -> then it stores as fat *North American consume average 155pounds of meat/poultry a year. 5 main sources are 1. Beef 2.Chicken 3.Milk 4.Whitebread 5.Cheese Protein 8. Essential Amino Acids (9) : Our body do not produce 11. You must obtain via the diet 9. Non-essential Amino Acids (11) 12. Produced by our body
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High Protein/Low Carb Diets 10.Zone, Atkins, Sugar Busters: You are using your
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