LecturesEXSC200short

LecturesEXSC200short - 1 Exercise Sciences 200L Nutrition:...

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Unformatted text preview: 1 Exercise Sciences 200L Nutrition: Macronutrients and Energy Metabolism (4 units) University of Southern California Department of Kinesiology Fall 2008 Dr. Alberto Vallejo Course Overview Key Dates Objectives Semester Outline Key Dates Midterm 1 Sept 18 Midterm 2 Oct 14 Midterm 3 Nov 11 Thanksgiving Nov 20 Final Dec 11 (11am-1pm) 2 Objectives: To understand how the gastrointestinal tract Functions in digestion Absorption of macronutrients To understand the basic principles In caloric balance Weight control To understand the basic principles of enzymatic reactions as they apply to the metabolic pathways for carbohydrates and fats To apply knowledge of metabolic pathways to Exercise Lecture Outline Tentative Schedule on Syllabus Chapter 1: The Science of Nutrition 3 Quote of the Day Let thy food be thy medicine and thy medicine be thy food. Hippocrates (460-364 B.C.) Introduction to Nutrition and the Nutrients Nutrition Science of how living organisms obtain and use food to support all the processes required for existence Disciplines within nutrition study: Food production and availability Why people choose to eat certain things Cultural influences on food intake and nutritional status How the body breaks down food and uses it for chemical and mechanical processes Nutritional Sciences Reflects a broad spectrum of academic and social disciplines Nutritional Scientists Scientists who study nutrition that can be found in the following disciplines: Immunology, medicine, genetics, biology, physiology, biochemistry, education, psychology, sociology Dietitians Nutrition professionals who help people make dietary changes and food choices to support a healthy lifestyle. 4 Nutrients and Their Classification Nutrient Substance in foods used by the body to serve one or more of the following purposes: Provide a source of energy Provide structure Regulate chemical reactions in the body Foods that contain high levels of nutrients are more nutritious than foods that do not. Not all compounds in food are nutrients. Food Labels Assist in Identifying Nutrients and Non-Nutrients in Food Essential, Nonessential, and Conditionally Essential Nutrients Essential Nutrients Must be obtained from the diet Body needs them Body either cannot make them at all or cannot make them in adequate amounts Nonessential Nutrients Body can make these in sufficient amounts when they are needed Humans do not need to consume these Most foods contain both essential and non- essential nutrients Example: Milk 5 Essential, Nonessential, and Conditionally Essential Nutrients cont....
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LecturesEXSC200short - 1 Exercise Sciences 200L Nutrition:...

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