HUN 2000 Lecture Notes - Lecture 7: Basal Metabolic Rate, Calorimetry, Food Energy
24 Aug 2016
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Document Summary
Energy [e] cannot be created or destroyed, but can change form to: Energy consumed = energy expenditure (energy in = energy out) Amount of work required to move a 1kg object 1 meter under the force of gravity. Amount of heat (energy) required to raise the temperature of 1kg of water 1c. Fat has 9kcal per gram [9000 calories per gram] Increase in water temperature is used to calculate the amount of energy in food. Heat is proportional to the amount of energy used by the individual. Heat is generated by metabolic reactions that: Captured & stored in phosphate bonds of atp. How energy expenditure is usually measured in animals. Device measures consumption of 02 and expiration of c02. Atp production can be calculated from: amount of c02 and 02 inhaled. Bmr is directly proportional to lean body mass [lbm] Increase in energy expenditure > after ingestion of food (causes body temperature to slightly rise a few hours after eating)
