Lecture_18_Measuring_Body_Composition

Lecture_18_Measuring_Body_Composition - ENERGY BALANCE...

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ENERGY BALANCE Weight - Energy out = Energy in Weird Al Yankovic – Grapefruit Diet
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Indirect Calorimetry 1. Respiratory Analysis
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O 2 CO 2 = Energy Produced Energy Expended ATP Production = ATP Utilization Indirect Calorimetry RQ = O 2 CO 2 Calories per ( CO 2 or O 2 ) RQ RQ 0.7 Fat 1.0 Carb Measuring Energy (ATP) Production
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Indirect Calorimetry 1. Respiratory Analysis 2. Double Labeled Water
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Double labeled water - Non-Radioactive label H 2 O - Hydrogen is lost in H 2 O - Oxygen is lost in H 2 O and in C O 2 - Lose the labelled O more rapidly than H - By subtraction: Rate of Oxygen lost - rate of Hydrogen lost H 2 O + C O 2 - H 2 O = C O 2 If we had RQ can calculate expenditure! Can estimate RQ from FQ (Food Quotion)
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Double labeled water Time (days) Amount of label left in body O xygen ( H 2 O + C O 2 ) H ydrogen ( H 2 0 ) = CO 2 expired
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Double labeled water Time (days) Amount of label left in body O xygen ( H 2 O + C O 2 ) H ydrogen ( H 2 0 )
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Indirect Calorimetry 1. Respiratory Analysis 2. Double Labeled Water 3. Heart Rate Monitor
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This note was uploaded on 09/26/2010 for the course NS 1150 taught by Professor Levitsky during the Spring '05 term at Cornell University (Engineering School).

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Lecture_18_Measuring_Body_Composition - ENERGY BALANCE...

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