下楼梯以及下汽车、火车等下阶梯动作是日常生活中常见的动作,这种由高落下的着地动作过程是人体下肢与外界环境(地面)产生的一种互动类型。在这一过程中,人体依据感觉运动系统所反映的信息(包括来自视觉的外在信息和来自本体感受器的内在信息)调节下肢肌肉的适当活动,包括着地 Down the stairs and the next car, train and other lower-step movements are common in everyday life. This high-altitude landing is an interaction type between the lower limbs and the external environment (ground). In the process, the human body regulates the appropriate activities of the lower extremity muscles based on the information reflected by the sensory-motor system, including external information from vision and intrinsic information from the ontological receptors, including the ground