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Fitness for Life. Unit 5. Chapter 13. Eating Disorders , Essential Body Fat…Too little Too much , Metabolism. Body Composition. Body Composition: A composition of all the tissues that make up the body Self-perception:
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Fitness for Life Unit 5
Eating Disorders, Essential Body Fat…Too little Too much,Metabolism
Body Composition • Body Composition: • A composition of all the tissues that make up the body • Self-perception: • How a person sees themselves. This is not always an accurate portrayal of reality.
Eating Disorders • Bulimia: • An eating disorder where a person binge eats and then throws up continuously • Those suffering from Bulimia don’t always look sick • Neurological disorder • Anorexia Nervosa: • Serious eating disorder where a person severely restricts the amount of food eaten • See themselves as fat even though they are extremely thin • Neurological disorder
Essential Body Fat • Essential Body Fat: • The minimum amount of body fat needed for good health • 5 Reasons why maintaining essential body fat levels is important for good health: • 1. Fat is an insulator, it helps your body adapt to heat and cold • 2. Fat is a shock absorber • 3. Fat helps your body use vitamins effectively • 4. Fat is stored energy for when your body needs it • 5. Fat when controlled helps you look your best
Too Much Fat • Obesity: • A person who is extremely overweight • Calories: • Found in the food you eat and used for energy • Too many calories in diet lead to being overweight or obese • 1 pound of fat = 3500 calories • Muscle: • Muscle weighs more than fat and increases the amount of calories needed in the body • Hydrostatic Weighing: • A technique used for assessing body fat levels that involves being immersed in a tank of water.
Fat Loss • Two myths and facts about fat loss: • You can spot reduce by exercising specific body parts to lose fat in certain areas • Myth • Any exercise that burns calories will cause the body’s general fat to decrease • Fact • Exercise doesn’t help fat loss because it increases your appetite • Myth • Activity level does increase your appetite, but may increase your intake to account for increased exercise • Fact
Fat Loss • Why is a combination of diet and physical activity best for maintaining ideal levels of body fat? • Increasing activity uses calories and decreasing the amount of food eaten decreases caloric intake; both of these help reduce body fat.
Metabolism • Basal Metabolism • The amount of energy you body uses to keep you living or at complete rest. • What affects metabolism? • 1. Age • 2. Gender • 3. Genes
Nutrition • Nutrients: • Food substances required for the growth and maintenance of cells. • Nutrient Dense: • Food that contains a large amount of nutrients for the number of calories it provides. • Ex: Whole-grain breads and cereals, rice, beans, pasta, vegetables, and fruits are considered to be nutrient dense because they not only are high in carbohydrates but supply other nutrients such as vitamins, minerals, protein, and fiber.
Types of Nutrients • Carbohydrates: • Provide the body with its’ main source of energy • Two types: • Simple Carbohydrates: • Supply immediate energy with little or no change in digestion • Example: Sugar • Complex Carbohydrates: • Contain more nutrients than simple and supply body with extended amounts of energy. • Example: Pasta, bread, etc…
Types of Nutrients • Proteins: • Group of nutrients that build, repair and maintain body cells. • The body breaks down proteins into simpler substances called amino acids. • Two types of Protein: • Complete Protein: • Contains all nine essential amino acids • Ex: Meat, Fish, Poultry, Cheese, Eggs, Yogurt, and Milk • Incomplete Protein: • Contains some, but not all, essential amino acids • Ex: Grains, Nuts, Beans, Seeds, Peas, Corn etc..
Types of Nutrients • Fiber: • Cannot be digested by the body, and is essential to keep the digestive track clean. • Examples: breads, fiber cereal, fruit, etc… • Cholesterol: • Fatlike substance found in animal cells • The amount of cholesterol in the diet should be limited
Number of Calories in Nutrients • Fat: • 1 gram of fat = 9 calories • Carbohydrates or Protein • 1 gram of carbohydrate or protein = 4 calories
Six Essential Nutrients • Six essential nutrients and their function in the body: • 1. Carbohydrate: main source of energy • 2. Protein: build, repair and maintain body cells • 3. Fat: necessary for growth and repair of cells • 4. Minerals: regulate the activities of the cell • 5. Vitamins: growth and repair of cells • 6. Water: essential for hydration
Myths and Facts about Nutrition • Two common myths and facts about nutrition: • Skipping meals is a good way to lose weight? • Myth • Skipping meals increases the appetite and typically you eat more in fewer meals if a meal is skipped. • Fact • High protein diets are best for losing weight? • Myth • High protein diets lose weight quickly through water weight, but are not good at maintaining weight loss. • Fact
Calcium • How is calcium important for health and what can you do to keep your bones strong? • Calcium helps maintain and improve bone strength.
Quackery and Fraud • Quackery: • A method of advertising or selling that uses false claims • Many products sold as sport supplements, or ergogenic aids, are quack products
Quackery and Fraud • 8 ways to detect quackery and fraud: • 1. Check credentials • 2. Be wary of advisors who sell products • 3. Check the organizations of the experts you consult • 4. Be wary of those who promise immediate results • 5. Be suspicious of sales pitches that promise results too good to be true • 6. Be cautious about mail order and internet sales • 7. Be wary of product claims • 8. Be wary of untested products
Diets and Supplements • Diet: • Changing what you eat and how you exercise to be able to lose weight • Fad Diet: • A diet that often promises quick results but is usually nutritionally unbalanced • Food Supplements: • A product intended to add to a person’s nutritional intake
Certified Health Professionals • Health Education Teacher: • Someone who can teach and answer concerns about general health • Dietitian: • Offers advice about diet and nutrition • Nutritionist: • Someone who can recommend diet and nutrition guidelines • Registered Physical Therapist: • Someone who can treat and recommend fitness exercises • Medical Doctor: • Someone who can diagnose and recommend a fitness and diet program