The present invention includes a plurality of left sole sensor units for measuring a left ground reaction force signal generated from the left sole while walking; A plurality of right sole sensor units for measuring a right ground reaction force signal generated from the right sole while walking; As a gait analysis device including a calculation unit that receives and calculates a left ground reaction force signal and a right ground reaction force signal, the calculation unit calculates the position and ratio of the left pressure center in the walking direction from the left ground reaction force signal, and the right ground reaction force signal It relates to a gait analysis device that calculates the position and ratio of the right pressure center in the walking direction from, and integrates the position and ratio of the left pressure center in the walking direction, and the position and ratio of the right pressure center from the walking direction. .
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