Performance Indicators.

Performance indicators at the end of the adaptation phase (last two target-sets) for the stabilization in the central target area. SSI (Stiffness Size Index): Kxx/Ku. SOI (Stiffness Orientation Index): the orientation of the major axis of the stiffness ellipse. BSI (Bimanual Separation Index): average distance between the two hands [cm]. BF (Burst Frequency): [impulses/s]. E (Effort): [N]. CE (Cumulative Effort): [Ns]. STR (Stabilization strategy label): SSS/PSS (subjects were classified as users of the SSS or PSS strategy, based on their average behavior during the last two target sets at the central target.针对中央目标区域内的稳定控制任务，适配阶段末期（最后两组目标任务集）的性能指标如下： 刚度尺寸指数（Stiffness Size Index, SSI）：Kxx/Ku。 刚度方向指数（Stiffness Orientation Index, SOI）：刚度椭圆长轴的朝向。 双手分离指数（Bimanual Separation Index, BSI）：双手间的平均距离 [厘米]。 爆发频率（Burst Frequency, BF）：[脉冲/秒]。 出力（Effort, E）：[N]。 累积出力（Cumulative Effort, CE）：[牛·秒]。 稳定策略标签（Stabilization strategy label, STR）：SSS/PSS，即基于受试者在中央目标区域最后两组目标任务集中的平均行为表现，将其划分为SSS策略使用者或PSS策略使用者。