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direct calorimetry

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direct calorimetry,
the measurement of the amount of heat directly generated by reaction. Compare indirect calorimetry.

calorimetry
measurement of the heat eliminated or stored in any system.

direct calorimetry
measurement of heat actually produced by the organism which is confined in a sealed chamber or calorimeter.
indirect calorimetry
estimation of the heat produced by means of the respiratory differences of oxygen and carbon dioxide in the inspired and expired air.


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Direct calorimetry is not in wide use even for research purposes, as it measures energy expenditure by monitoring the body's heat production and requires a specially designed sealed room with tightly controlled conditions.
such as the measurements we obtained with the Vista metabolic system, has been demonstrated by correlating those measurements with those obtained with direct calorimetry.
 
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