Nature

A simple method of measuring total daily energy expenditure and physical activity level from the heart rate in adult men

To evaluate a simple method that uses only a heart rate monitor to predict total energy expenditure (TEE) and physical activity level (PAL) from 24 h heart rate (HR) measurements. The simple method ...
Nature

Measurement of total energy expenditure in grossly obese women: comparison of the bicarbonate–urea method with whole-body calorimetry and free-living doubly labelled water

OBJECTIVE: To establish validity of the bicarbonate–urea (BU) method against direct measurements of gaseous exchange (GE) in a whole-body indirect calorimeter and to compare BU and doubly labelled ...