GRAVIC BODY SWAY ANALYZER

PROBLEM TO BE SOLVED: To clarify a distribution difference between the healthy subject and patients in a frequency analysis of gravic body sway.SOLUTION: A gravic body sway analyzer includes: a force plate; center-of-gravity coordinates acquisition means that acquires time-series data of center-of-gravity coordinates on an XY plane using load data detected by the force plate; power spectrum calculation means that calculates a power spectrum related to the acquired center-of-gravity coordinates; and frequency analysis means that executes a frequency analysis from a relationship between the calculated power spectrum and the frequency. The frequency analysis means calculates, for each frequency, a ratio of the power spectrum of a subject in the gravic body sway to a power spectrum of the healthy subject in the gravic body sway.