The method f determining energy expenditure that involves the measurement of heat given off by the body during a select period of time in an insulated chamber is

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Direct calorimetry involves measuring the heat given off by the body directly, which is typically done by placing someone in an insulated chamber and measuring the temperature change inside the chamber over a select period of time. Indirect calorimetry, on the other hand, involves measuring the oxygen consumed and carbon dioxide produced by the body, which can then be used to estimate energy expenditure. Thermocalorimetry and bomb calorimetry are not typically used to measure human energy expenditure.

The Method F Determining Energy Expenditure That Involves the Measurement