RELATIONSHIP BETWEEN NEWBORN STEPPING AND LATER WALKING: A NEW INTERPRETATION
RELATIONSHIP BETWEEN NEWBORN STEPPING AND LATER WALKING: A NEW INTERPRETATION
复制标题
新生儿迈步与以后行走之间的关系：一种新的解释
DOI：
10.1111/j.1469-8749.1987.tb02492.x
复制
发表时间：
1987
影响因子：
3.8
通讯作者：
Deborah Whitley Cooke
中科院分区：
文献类型：
--
作者：
E. Thelen;Deborah Whitley Cooke
通过新的运动学和肌电图数据检查了新生儿迈步和以后行走之间的关系。对 18 名正常婴儿在 1 个月和 2 个月大、第一次独立迈步前 1 个月和 2 个月以及第一次独立迈步发生当月的迈步动作进行了比较。第一个月迈步的特点是髋部、膝部和踝部运动紧密同步，但早在两个月时，踝关节就开始与髋部和膝部异相运动。在独立行走之前，一种更类似于成人的模式不断出现，膝盖领先于臀部弯曲。然而，随着步行的开始，新生儿迈步的原始特征仍然存在，包括迈步结束时踝关节过度伸展、髋部和膝部过度屈曲以及肌肉过度激活。这些结果表明，成熟的行走可能是从新生儿刻板的运动模式演变而来的。有人认为，除了平衡、姿势控制和生命第一年的力量发展之外，步伐组织中的这些逐渐变化是由直立运动的动态功能需求引起的。
The relationship between newborn stepping and later walking was examined by means of new kinematic and electromyographic data. Stepping movements of a group of 18 normal infants were compared at one and two months of age, at one and two months before the first independent steps, and at the month when these first steps occurred. Stepping in the first month was characterized by tight synchronization of hip, knee and ankle movements, but as early as two months the ankle‐joint began to move out of phase with the hip and knee. Before independent walking a more adult‐like pattern continued to emerge, with the knee leading the hip in flexion. However, with the onset of walking, primitive characteristics of newborn stepping remained, including ankle hyperextension at the end of the step, hyperflexion of the hip and knee and excessive muscle activation. These results suggest that mature walking may evolve from the newborn stereotyped movement pattern. It is suggested that these gradual changes in the organization of the step are evoked by the dynamic functional demands of upright locomotion, in addition to balance, postural control and strength development in the first year of life.