文档介绍：Energy Metabolism &Body temperature
王竹立
(Wang Zhuli)
Concept of energy metabolism:
The processes of liberation, transfer, storage and utilization of energy taking place with substances metabolism
Direct Calorimetry——
   to measure the sum of heat production of whole body in a unit of time
Indirect Calorimetry——
    ◎ the principle of chemical reactions
◎to check up how much carbohydrates, fats and proteins are oxidized respectively in certain times
◎to calculate the sum of heat production of body in this times
C6H12O6 + 6O2 → 6CO2 + 6H2O + △H
(Glucose)
Simplified method of Indirect Calorimetry: to measure volumes of O2 used in certain times and calculate the calories according to certain formula.
Thermal Equivalent of Food——
    Calories liberated by 1g of food oxidized in body(or burned out of body).
biological thermal equivalent( oxidized in body )
physical thermal equivalent( burned out of body)
Thermal Equivalent of Oxygen——
In the process of oxidizing food, Calories liberated
per liter O2 consumed
Respiratory Quotient(RQ)——
In the process of oxidizing food, the ratio
of carbon dioxide produced to oxygen used
CO2 produced (ml )
RQ = ————————
O2 used(ml)
Non-Protein Respiratory Quotient(NPRQ)——
    In the process of oxidizing the carbohydrate mixed with fat in different proportion, the ratio of carbon dioxide produced to oxygen used