An activity-induced energy expenditure estimating instrument is provided
which is capable of estimating an activity-induced energy expenditure
with ease and high accuracy. The activity-induced energy expenditure
estimating instrument comprises: body activity information measuring
means, body specifying information acquiring means, body composition
information acquiring means, and activity-induced energy expenditure
computing means, wherein the body activity information measuring means
measures body activity information, the body specifying information
acquiring means acquires body specifying information, the body
composition information acquiring means acquires body composition
information, and the activity-induced energy expenditure computing means
calculates an activity-induced energy expenditure corresponding to these
body activity information, body specifying information and body
composition information, by use of correlation data representing
correlations between the body activity information, body specifying
information and body composition information and an activity-induced
energy expenditure.