Patent ID: 8504145

Claim:
A biometric information processing device comprising: a heart rate detection unit that detects a heart rate of a subject; a relative heart rate calculation unit that calculates a relative heart rate, which is a relative value of the heart rate to a prescribed resting heart rate of the subject; a relative oxygen intake calculation unit that calculates a relative oxygen intake based on the relative heart rate; an oxygen intake estimation unit that estimates the oxygen intake from the relative oxygen intake; and a calorie expenditure calculation unit that calculates calorie expenditure based on the oxygen intake, HR being the heart rate, HRrest being the resting heart rate, HRmax being a peak heart rate defined as a function of age of the subject, the peak heart rate HRmax being calculated from a following equation where AGE is the age of the subject HR max=220−AGE, the relative heart rate calculation unit calculating the relative heart rate RHR using a following equation RHR =( HR−HR rest)/( HR max− HR rest)*100(%).