Togari H, Kato I, Saito N, Yamaguchi N
Department of Pediatrics, Nagoya City University Medical School, Kawasumi, Mizuho, Nagoya 467-8601, Japan.
Early Hum Dev. 2000 Sep;59(3):151-8. doi: 10.1016/s0378-3782(00)00096-7.
There are few reports about developmental behavior relating to roll over among healthy infants. We assessed the relationship between the placed position on sleeping and altered sleeping position the next morning by roll over among healthy infants. A health check-up clinic distributed a total of 1626 questionnaires to parents whose infant's ages are 1.5 years (or 18 months) old. The age at the first roll over and the change in sleeping position the next morning after they started to roll over, were investigated. The mean age of roll over from the supine to the prone among infants who were placed mainly in the prone sleeping position, at least in the first week of life, was 4.0 months (S.D., 1.1). The mean age of roll over from the supine to the prone among infants who were placed mainly in the supine sleeping position during early neonatal life and thereafter was 4.4 months (S.D., 1.2). The age of the first roll over from supine to prone was significantly younger in infants who were placed mainly in the prone sleeping position during early neonatal life. Among 651 infants who had been placed supine, 34.7% were found prone by roll over the next morning. Among 211 infants who had been placed prone, 14.2% were found supine by roll over the next morning. The number of infants who rolled over from supine to prone position was statistically greater than those from prone to supine. It is likely that the healthy human infant tends to sleep in the prone rather than the supine position. The finding is especially important for the correct assessment of the position in which SIDS cases were found dead.
关于健康婴儿翻身相关发育行为的报道较少。我们评估了健康婴儿睡眠时的放置姿势与次日早晨因翻身而改变的睡眠姿势之间的关系。一家健康体检诊所向婴儿年龄为1.5岁（或18个月）的家长共发放了1626份问卷。调查了首次翻身的年龄以及开始翻身次日早晨睡眠姿势的变化。在出生后至少第一周主要采用俯卧睡眠姿势的婴儿中，从仰卧翻至俯卧的平均年龄为4.0个月（标准差1.1）。在新生儿早期及之后主要采用仰卧睡眠姿势的婴儿中，从仰卧翻至俯卧的平均年龄为4.4个月（标准差1.2）。在新生儿早期主要采用俯卧睡眠姿势的婴儿中，首次从仰卧翻至俯卧的年龄明显更小。在651名被放置为仰卧的婴儿中，次日早晨有34.7%因翻身而呈俯卧姿势。在211名被放置为俯卧的婴儿中，次日早晨有14.2%因翻身而呈仰卧姿势。从仰卧翻至俯卧姿势的婴儿数量在统计学上多于从俯卧翻至仰卧的婴儿数量。健康的人类婴儿可能更倾向于俯卧而非仰卧睡眠。这一发现对于正确评估婴儿猝死综合征（SIDS）病例死亡时的姿势尤为重要。
