Chapter10Energy Balance

Chapter10Energy Balance - Energy balance and Weight Control...

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Unformatted text preview: Energy balance and Weight Control- Fat or Fit? Why? Fat and Flabby • Houston • Detroit • Philadelphia • New Orleans • Columbus, Ohio Fit and Trim • San Diego • San Francisco • Honolulu • Boulder • Minneapolis Hardees Monster Thickburger • two 1/3-lb. patties • four strips of bacon • three slices of cheese • mayonnaise • buttered, toasted, sesame seed bun 1,420-calories 107 grams of fat Energy Balance Energy Intake = Energy Output Energy Balance: Energy Output Calories • Basal metabolism • Physical activity • Thermic effect of food • Thermogenesis Basal Metabolism • ~60-70% of total energy needs • Minimum energy used to keep body alive • at rest but awake • heartbeat, respiration, body temperature, • varies between individuals Basal Metabolic Rate (BMR) Affected by: • Body surface area (weight, height) • Gender (male>female) • Body temperature ( fever ) • Thyroid hormones • Nervous system activity • Age (young>old) • Calorie intake • Pregnancy • Caffeine & tobacco Calculate your BMR ❚ Males – Weight (lbs) x 12 ❚ Females – Weight (lbs) x 11 ❚ Very simplified equation ❚ 134 lbs x 12 = 1608 calories Physical Activity • Increases energy output beyond basal • Varies among individuals • More activity --> more energy burned Thermic Effect of Food (TEF) • ~5-10% of total energy consumed • Energy to: • digest, absorb, metabolize food Thermogenesis Production of heat in response to: • cold (shivering) • Fidgeting • maintenance of muscle tone • posture • overfeeding • Accounts for only ~7% of energy use Speed of Treadmill Desk? ❚ 1 MPH Total Caloric Output ❚ BMR ❚ Physical activity ❚ Thermic effect of food ❚ Thermogenesis Positive Energy Balance • Energy intake > energy output • Results in weight gain Needed for: • Pregnancy • Infancy • Childhood Negative Energy Balance Energy intake < Energy output • Results in weight loss How to Work Off Your Calories FOOD Calories Walk Cycle Swim Recline Apple 101 19 12 9 78 Apple Pie,1/6 377 73 46 34 290 Minutes of Activity Must control caloric intake Fig. 13.3 Model of Energy Balance Energy Intake Energy Output What is a healthy weight?What is a healthy weight?...
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This note was uploaded on 06/23/2011 for the course NUTRITION 210 taught by Professor Dr.bomser during the Spring '11 term at Ohio State.

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Chapter10Energy Balance - Energy balance and Weight Control...

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