In the present invention, a computer executes processes for: acquiring, from at least one sensor disposed on the insole of shoes used by a plurality of users, at least foot sole pressure data for a prescribed amount of time when walking and when stationary; and analyzing the acquired data to acquire and accumulate, for each user, at least a foot sole pressure parameter, foot pressure center parameter and time parameter when walking, and at least a foot sole pressure parameter and foot pressure center parameter when stationary.
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