PROBLEM TO BE SOLVED: To obtain a new walking parameter that is useful for evaluating a subject's walking motion.SOLUTION: A walking analysis method includes the steps of: mounting a three-axis acceleration sensor and three-axis angular velocity sensor on each of lower limb parts, at least one joint of joints constituting at least one lower limb of a subject being interposed between the parts； measuring an acceleration and angular velocity of each lower limb part by using the three-axis acceleration sensor and three-axis angular velocity sensor, during the subject's walking； calculating a posture of each lower limb part during the walking, on the basis of the measured acceleration and angular velocity； constructing a three-dimensional model including a motion locus of the at least one joint by connecting the lower limb parts in the calculated posture with each other； and calculating an angle, on a sagittal plane, between an acceleration vector of the at least one joint and the motion locus when a heel is on the ground, as a walking parameter.SELECTED DRAWING: Figure 11【課題】被験者の歩行動作の評価に有用な新たな歩行パラメータを得ることにある。【解決手段】被験者の少なくとも一方の下肢を構成する関節のうちの少なくとも１つの関節を挟む下肢部分に、３軸加速度センサおよび３軸角速度センサをそれぞれ装着し、被験者の歩行中に、３軸加速度センサおよび３軸角速度センサで各下肢部分の加速度および角速度を測定し、測定された加速度および角速度に基づき、歩行中の各下肢部分の姿勢を算出し、算出された姿勢にある下肢部分を互いに連結して、少なくとも１つの関節の運動軌跡を含む３次元モデルを構築し、矢状面において、踵接地時の少なくとも１つの関節の加速度ベクトルが運動軌跡に対してなす角を歩行パラメータとして算出する。【選択図】図１１
