University Federal of Sao Carlos (UFSCar), Brazil.
Infant Behav Dev. 2009 Dec;32(4):376-80. doi: 10.1016/j.infbeh.2009.06.007. Epub 2009 Jul 25.
This prospective cross-sectional study aimed to characterize variability in the levels of postural control in supine and prone positions in typical 0-4-month-old infants by using the Chailey Levels of Abilities Scale. Forty infants were divided into five groups of eight infants, according to their age. In supine, the levels varied between 1 and 2 in 0-month group, and between 2 and 3 in 2-month group. In prone, the levels varied between 1 and 2 in both 0- and 1-month groups. There was no variability in 1-month group in supine or in 2-month group in prone. In 3-month and 4-month groups, no variability was found in any of the positions. Variability in the levels of postural control among infants at the same age may be interpreted as normal as long as infants are in the initial process of acquiring postural control, that is, within the age range of 0-2 months.
本前瞻性横断面研究旨在使用 Chailey 能力量表（Chailey Levels of Abilities Scale），描述仰卧位和俯卧位时典型 0-4 个月婴儿的姿势控制水平的变化。40 名婴儿根据年龄分为五组，每组 8 名婴儿。仰卧位时，0 月龄组的水平在 1-2 级之间，2 月龄组的水平在 2-3 级之间。俯卧位时，0 月龄和 1 月龄组的水平在 1-2 级之间。1 月龄组仰卧位和 2 月龄组俯卧位均无变化。3 月龄和 4 月龄组在任何体位均无变化。只要婴儿处于获得姿势控制的初始阶段，即 0-2 个月龄内，同年龄段婴儿的姿势控制水平的变化可以被解释为正常。
