20.5.1 Balancing Energy Requirements-R

20.5.1 Balancing Energy Requirements-R - vs Composition...

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2.5.1 Balancing Energy  Requirements
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A Balancing Act Everything that  you  eat and digest has  to be used by the  body or sent to  storage
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Fig. 9.1 Energy Intake versus Energy Output Body weight is  stable when  number calories  consumed    =  number calories  spent  
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 carbohydrate…. 4kcals/g  protein…………… 4kcals/g  fat…………………. . 9kcals/g  alcohol…………… 7kcals/g Energy from Food & Alcohol
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Controlling Food Intake I’m full Eat Beginning  to get  hungry hunger  signal satiation  signal satiety
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Fig. 9.11 Controlling Food Intake  cont .
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Energy Expenditure Fig 9.3
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Estimating Energy Requirements Men 19 yrs and older: EER = 662 - 9.53 x age + PA    x  [(15.91 x wt) + (539.6 x ht)] Women 19 yrs and older: EER = 354 – 6.91 x age + PA    x  [(9.36 x wt) + (726 x ht)] Note: height in meters; weight in kilograms
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Body Weight 
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Unformatted text preview: vs Composition body weight = lean body mass (muscle, organs, bones) + fat composition reflects proportions of fat and lean tissue that make up body weight weight loss/gain doesnt necessarily = fat loss/gain Fat Distribution body needs vary upper body fat intra-abdominal fat lower body fat Fat Distribution : Waist-to-Hip ratio males: WHR 0.95 females: WHR 0.85 Waist circumference males: waist greater than 40 inches females: waist greater than 35 inches Adipose (fat) Cells numbers increase rapidly during childhood & adolescence can increase size x20 fold! more fat cells produced as needed fat cells shrink but dont go away! secrete hormone called leptin...
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This note was uploaded on 06/24/2008 for the course FSHN 130 taught by Professor Wood during the Spring '08 term at Washington State University .

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20.5.1 Balancing Energy Requirements-R - vs Composition...

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