Ravussin et al reported equations for estimating the resting energy expenditure (REE) and basal metabolic rate (BMR) in adults. The authors are from the National Institute of Diabetes and Digestive and Kidney Diseases of NIH.
Patient selection: adults from 21 to 64 years (total of 12 subjects, 10 males and 2 females)
The resting energy expenditure was higher than the basal metabolic rate in most patients with the mean 27% higher.
Parameters:
(1) body weight in kilograms
(2) height in centimeters
(3) fat-free mass (FFM) in kilograms
(4) body surface area (BSA) in square meters
(5) percent body fat (from 0 to 100), which was obtained from underwater weighing (can be approximated by relative amount of fat mass)
REE in kcal per 24 hours =
= (13 * (body weight)) + 1043
REE in kcal per 24 hours =
= (11.3 * (body weight)) + (14.7 * (height)) - 1255
REE in kcal per 24 hours =
= (1323 * (BSA)) - 392
REE in kcal per 24 hours =
= (26.5 * (fat free mass)) + 597
REE in kcal per 24 hours =
= (25.8 * (fat free mass)) + (4.8 * (percent body fat)) + 488
BMR in kcal per 24 hours =
= (20.9 * (fat free mass)) + 478
sleeping metabolic rate in kcal per 24 hours =
= (17.5 * (fat free mass)) + 495
