ABSTRACT
Three main methods are used to measure energy expenditure in man: indirect calorimetry, direct calorimetry, and the doubly labeled water technique. These methods are based on different principles and do not measure the same type of energy.
Three main methods are used to measure energy expenditure in man: indirect calorimetry, direct calorimetry, and the doubly labeled water technique. These methods are based on different principles and do not measure the same type of energy.