选择5款速滑冰刀（黑龙T型钛合金冰刀、枫叶双极光冰刀、海盗蓝宝石冰刀、海盗银武士冰刀、EVO镂空白管冰刀）作为测试冰刀，对冰刀上的品牌和其他有辨识度的特征进行遮挡处理。按照贴点方案为16名运动员粘贴39个反光标志点，16名运动员按6个阶段（起跑、直线、入弯、弧顶、出弯、冲刺）分别使用5款速滑冰刀进行500米测试。采集的所有标志点三维坐标采用Butterworth低通滤波法进行平滑，截断频率为13.3 Hz。根据标志点坐标计算髋、膝、踝关节中心，髋关节中心根据Bell的研究计算，膝关节转动中心为股骨内外侧髁中点，踝关节转动中心为内外踝中点，根据体表标志点坐标建立人体多刚体模型，进而计算人体重心（Center of mass，COM）。然后分别对6个阶段中4个时刻（左右脚触冰、左右脚离冰）的运动学参数进行统计学分析。

Select 5 types of speed skating skates (Black Dragon T-shaped titanium alloy skates, Maple Leaf Double Aurora skates, Pirate Sapphire skates, Pirate Silver Warrior skates, and EVO Hollow White Tube skates) as the test skates to mask the brand and other recognizable features on the skates. According to the sticking scheme, 39 reflective marker points were pasted for 16 athletes, and 16 athletes were tested for 500 meters using 5 types of speed skating skates in 6 stages (starting, straight, entering, arc top, exiting, and sprint). The collected three-dimensional coordinates of all marker points are smoothed using Butterworth low-pass filtering, with a truncation frequency of 13.3 Hz. The centers of the hip, knee, and ankle joints are calculated based on the coordinates of the marker points. The center of the hip joint is calculated based on Bell's research. The center of rotation of the knee joint is the midpoint of the medial and lateral condyles of the femur, and the center of rotation of the ankle joint is the midpoint of the medial and lateral malleolus. A multi rigid body model of the human body is established based on the coordinates of the marker points on the body surface, and the center of mass (COM) of the human body is calculated. Then, the kinematic parameters of four of the six stages (left and right feet touching the ice, left and right feet leaving the ice) were statistically analyzed.