KIN202 Lecture Notes - Lecture 6: Fick'S Laws Of Diffusion, Indirect Calorimetry, Respiratory Quotient
20 Jan 2019
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Unit 4 calorimetry the fick equation & vo2 kinetics 2. The production of atp required consumption of food (cho, fat and protein) and oxygen. This process results in the release of heat energy. The rate of heat production is directly proportional to energy expenditure and, therefore, metabolic rate. Direct calorimetry: quantities energy expenditure by measuring heat produced. Indirect calorimetry: estimates energy expenditure by measuring the chemical. Measures conc of o2 and vol. of air expired calculate vo2 & vco2 calculate metabolic rate. Oxygen consumption is directly proportional to the heat produced. Vo2 provides an indirect and accurate estimate of whole-body energy expenditure. A function of the body"s ability to take up oxygen from the atmosphere (lung/blood), deliver it throughout the body (heart & blood vessels) and to use it to produce atp (mitochondria) aerobically / min. The volume of co2 that is produced by the body (can be metabolic and non- metabolic) Unit: absolute term: l/min, ml/min, relative term: ml/kg/min.
