27 - 4. Larger people= larger mass= expending more energy...

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NS 115 discussion Notes 10/27 Energy Balance Energy in – energy out = energy balance If energy in>energy out = gain weight - Environmental factors: o Occasion to eat- eliminating snack o More sleep you get, the less you’ll eat o Portion size o Energy density o Food variety o Number of people o Eat outside home o Food advertisement o Rate others around you eat o Marriage o Secular trends o Immigration - Biological factors: genetics o .24% error- Levitsky argues against it. Assumption: 1. Daily intake regular 2. Expenditure regular 3. Weight is fairly constant
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Unformatted text preview: 4. Larger people= larger mass= expending more energy -Underwater body composition measurement- if they can calculate the different between your weight and the amount of water that you displace, can calculate % of body fat. Not very reliable because we have air in our body -Potassium in body o Muscle is 70% water, fat is 20% water. K+ is going to associate with your oxygen, so if its diluted, that means you have lots of muscle. o TOBEC not reliable because our bodies water content changes so much...
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27 - 4. Larger people= larger mass= expending more energy...

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