Patent ID: 7966063

Claim:
A body composition measuring apparatus comprising: a plurality of electrodes to be in contact with a plurality of predetermined parts, associated respectively with said electrodes, of the body of a subject; a hold portion that can be held in a hand of said subject, the hold portion comprising a display unit to display body composition data; a cable having one end connected to said hold portion; a rest portion on which a foot of said subject can be rested, said rest portion comprising, a receptacle for receiving the hold portion, such that when the hold portion is received in the receptacle the hold portion is substantially encased in the rest portion, a reel portion connected to the other end of said cable for winding said cable, a first detection unit for detecting a draw-out extent to which said cable is drawn out from said reel portion, and a second detection unit for detecting an angle formed by said rest portion and said cable proximate to a top surface of the rest portion; said body composition measuring apparatus further comprising a first part-length calculation unit for calculating the part length of a body part of said subject based on said draw-out extent detected by said first detection unit and said angle detected by said second detection unit; a first measurement unit for measuring impedance of said body part by using said plurality of electrodes; and a first body composition calculation unit for calculating body composition of said body part based on said calculated part length and said measured impedance.