LecturesEXSC200short

LecturesEXSC200short - 1 Exercise Sciences 200L –...

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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 –...

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