Tölt performance and rider asymmetry variables for each rider-horse interaction.

FAbs = Mean total absolute force of the left and right feet combined as measured from the foot force sensors; FDiff = Absolute mean difference between the left and right foot forces as measured from the foot force sensors; RollP = Side- to- side movement (roll) of the pelvis; RollT = Side- to- side movement (roll) of the thoracolumbar region; LAP = Lateral advanced placement; DF = Duty factor; Left = Left rein; Right = Right rein.总绝对合力（FAbs）：经足部力传感器测得的左右双脚合并总绝对平均力；受力绝对平均差值（FDiff）：经足部力传感器测得的左右足部受力间的绝对平均差值；骨盆侧向翻滚运动（RollP）：骨盆的左右侧向移动（翻滚运动）；胸腰椎区侧向翻滚运动（RollT）：胸腰椎区域的左右侧向移动（翻滚运动）；侧向超前放置（LAP）：Lateral advanced placement；负重因子（DF）：Duty factor；左缰（Left）：Left rein；右缰（Right）：Right rein