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Nutrition Chapter page 141
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Introduction Nutrition = physical performance fuel for biologic work
Eating behaviours Food choices Nutrients Physical activity
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General Food Guidelines
Eat slowly, chew well Eat foods in their natural state Drink lots of water Eat low fat dairy products Limit coffee/caffeine Eat lots of fresh fruit every day Avoid deep fried food Eat fresh fruit/vegetables daily
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General Food Guidelines
Avoid salt Use brown or wild rice Eat whole grain bread Avoid white sugar Do not skip meals – 3+ meals daily Do not skip breakfast! 142
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Limit alcohol Lunch s/b biggest meal of the day Variety with every meal Snack! Fluids high in Vitamin C 143
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Letters correspond to nutrients on page 145
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Other Foods The Canada Food Guide states:
“Taste and enjoyment can also come from other foods and beverages that are not part of the four food groups. Some of these foods are higher in fat or calories, so use these foods in moderation” 144
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Function of Key Nutrients
Energy Tissue growth and repair Regulation of metabolic function Heat 145
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Structure forming bones and teeth
Minerals Structure forming bones and teeth Regulate cell activity Maintain normal heart rhythm Regulate Ph base of body Neural conductivity
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Vitamins Regulates metabolic reactions/tissue synthesis
Releases energy in food
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Fibre Found in plant foods – beans, fruit, veggies grain. Help maintain healthy bowels Absorbs harmful chemicals Protects against cancer Protects against heart disease 145
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Carbohydrates 55 - 65 % of daily calories 1g - 4 calories
30 min. to digest and absorb Sole energy source for brain Necessary for fat metabolism 146
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Carbohydrates Excess stored as fat
Stored as glycogen in liver and muscle Deficiency causes use of protein A in starches (long glucose chain) means in seritonin levels = irritable, moody & fatigued 146
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Protein 12 - 20% of daily calories 1g - 4 calories
Adults require g per kg of body wt 2 hours to digest and absorb Builds and repairs tissue (muscles, hair, skin, gums), forms antibodies Excess stored as fat
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Fat 20-25 % of total calories should be fat 1 g yields 9 calories
4 hours to digest and absorb Fat holds organs and nerves in place Protects against injury Major supplier of energy Tastes good, fills you up Too much can cause obesity/heart disease 147
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Compound Fat Lipoproteins transport fat in blood Three categories;
Good Fats HDL - protein + fat Bad Fats LDL - Fat + protein VLDL FAT + protein
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LDL carries cholesterol into the cells and sticks to arteries
HDL help clear out the arteries
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The Bad Fats Saturated. Fats harden at room temp
Usually contain cholesterol Cause hardening of arteries . Hydrogenated. liquid vegetable oil that has been “saturated” Increases LDL (lots of it in fast foods) 148
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The Good Fat Unsaturated
Monounsaturated – prevents HD , lowers LDL, can prevent cancer Polyunsaturated (omega 3 FA) – aids heart health, fights breast cancer Vegetable related Low melting point Found in soybean, sunflower, corn oil, flax seed and cold water fish
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The Ugly Reality of Fat In Food
Too much is not good! Learn to read labels Any food with more than 30% fat s/b avoided!!!!
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Calculating the Nutrients in Food (Handout – Page 21)
Protein = 4 calories per gram Carbohydrates = 4 calories per gram Fat = 9 calories per gram Sample Calculations Canned Soup Total weight 28 oz (796 ml) Per 250 ml serving 94 cal Protein 2.7 g Fat 0.4 g Carbohydrates 20 g What is the total amount and percentage of kilocalories that come from protein? 2.7 grams of protein x 4 = 10.8 Kcal 10.8 /94 = 11% What is the total amount and percentage of kilocalories that come from Fat .4 grams of fat x 9 = 3.6 Kcal 3.6 / 94 = 3% What is the total amount and percentage of kilocalories that come from Carbohydrates 20 grams of carbohydrates x 4 = 80 Kcal 80/94 = 85%
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Your turn… Michelina’s Lasagna Alfredo with Broccoli and cheese Total 381 calories Protein 14 grams Fat 17 grams Carbohydrates 43 grams Show your calculations! What is the total amount and percentage of kilocalories that come from protein? What is the total amount and percentage of kilocalories that come from Fat What is the total amount of kilocalories that come from Carbohydrates
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Your turn… Michelina’s Lasagna Alfredo with Broccoli and cheese Total 381 calories Protein grams Fat grams Carbohydrates grams What is the total amount / percentage of Kcals that come from Protein? 14 grams x 4 = /381 = 14.6% What is the total amount / percentage of Kcals that come from Fat 17 grams x 9 = /381 = % What is the total amount/% of Kcals that come from Carbohydrates 43 grams x 4 = / 381 = %
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Information to Include: What they do in the body? How much do we need?
What Foods Should I Eat? Information to Include: What they do in the body? How much do we need? What sources and grams per serving? Images?Make it pretty and colourful! You job will be to work with a group of three or four to create a visual display of foods that you could eat for the following categories: Protein Fats – Good/Bad Carbohydrates Vitamins Minerals Fiber
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